Document 4avB0B9wqK5p2Vq6R0K5ENJ9G

BB012 207S /I QatcdcXf, of BUILDING MATERIALS MaH44^actiiAed Lif UNITED STATES GYPSUM COMPANY 5. M.ANDERSON REPRINTED FROM SWEET'S CATALOG FILE WITH ADDITIONAL MATTER PB-i CoDynght 1942 United States Gypsum Company 35W January 1942. Printed in U. S. A 13 13 O ym PJ tou >0 vs INDEX A Absorption Sound--Where, ond why to use: Toble. Accessories--Metol Loth.................................... Acousticol--Engineering assisfonce ............. Motenots.................................................................. Ploster .............................................................. Treofment (Weotherwood> .......................... Acoustone....................................................................... Motif'd....................................................................... Americon Stondord Specifications: (Loth and plaster/ ....................................... Application- Methods (comoo red) Rock loth Arches--Metal ......................................................... Areowoy Cuords......................................................... Aridtze Moulding Plaster .................................. Asbestos---Cement--Products .......................... Shingles ................................................................... Siding ...................................................................... Asohait--Better .................................................... Coated Sheathing ............................................ Shingles ................................................................... Assemblies of materials into Ceilings............. Partitions ................................................................ Wolls ........................................................................ PACE ............. 84 ............. 25 ............. 84 ... 84.89 . . .81, 88 ............. 48 ............. 86 .......... 84 .......... 34 .... 23 .......... 25 .......... 69 ____ 31 62. 66. 67 .... 66 ____ 67 .......... 62 .... 58 . . .64. 65 ...10-13 .......... 6-9 ____ 14-2 B Base Coat Plasters....................................................................................... 33 Bots-- Insulating.............................................................................................. 60 Beam--Fireproofing--Pyrobor ............................................................ 55 Blanket Insulation ..................................................................................... 60 Blende* Plank ............................................................................................. 49 Tile ............................................................................................................ 49 Blockset Cement .......................................................................................... 31 Boards, Ploster: Loth (Rocklath) ...............................................22, 23.26,27,58.59 Wcllboard (Sheetrock) :............................... 42, 43, 50, 51, 53, 59 Bondcrete ........................................................................................................ 32 Bond Plaster . 32 Bronds: Lime (Finishing! ...................................................................... 33 Lime (Masons! ................................................................................... 57 Plaster ........................................................................................................... 32 Brick Siding...................................... 63 Bridiomt--Method of applying Rocklcfh..................................... 23 Specifications ........................................................................................... 23 Brown Mortar ................................................................................................ 32 Bundling and Packaging--See material involved. C Calcimine ..................................................................................................... 72 Catwalks .......................................................................................................... 69 Ceiling Assemblies ..................................................................................10-13 Cement--Blockset........................................................................................... 31 Paint for........................................................................................................ 73 Roofing....................................................................................................... 63 Cemenfico (Cement point) .................................................................... 73 Clips--Plastering systems ..................................................................23,27 Cooting--Roof.................................................................................................. 63 Coldwoter Calcimine ................................................................................ 72 Point................................................................................................................. 72 Colored Interior Ploster Finish ............................................................ 40 Exterior Stucco Finish ......................................................................... 46 Colors--Exterior Texohfe ........................................................................ 71 Limeproqf....................................................................................................... 73 Oriental Exterior Stucco ...................................................................... 41 Oriental Interior Plaster......................................................................... 41 Texolite........................................................................................................... 71 Texohfe "BBO"........................................................................................J 71 Column Fireproofing ................................................................................... 55 Committee on Piaster Specifications: Personnel.......................... 34 Comparative Assemblies of Materials--Ceilings...................... 10-13 Partitions ......................................................................................................6-9 Walls ...................................................................................................... 14-21 Costs--See each material and "assembly" section. Concrete: Lime m ...................................................................................... 56 Construction Details Gyplao............................................................................................................. 45 Cypsum Plonk ........................................................................................ 77 Poured Roofs ........................................................................................ 81 Rocklath......................................................................................................... 23 Sheetrock................................................................................................... 43 Short span roof tile ........................................................................ 79 Steel roof decks ...................................................................................... 83 Containers--shipping--See material involved. Corner Beads ................................................................................................ 25 Cornerite .......................................................................................................... 25 Costs--Relative. See assemblies and mareriols involved. Coverage-- Plotters........................................................................................................ 32-33 Definition ................................................................................................ 31 Crating. See material involved. D Deep Color Texohfe ................................................................................... Details--Construction--See consrucfion details. Diamond Mesh Metal Loth ................................................................... Duracoi--Casein Powder Paint ............................................................ 71 24 72 E Econo-Mesh ..................................................................................................... 68 Engineering Assistance Acoustics............................................................................................................ 84 Roof and Floor Decks ......................................................................... 74 Expanded Metals ..................................................................................... 68 Expanded Stucco Mesh ............................................................................... 24 Exterior Points.................................................................................................. 73 Cemenfico...................................................................................................... 73 Texohfe............................................................................................................ 72 Ren. Trade Mark F G H I J K L M N Fasteners for Asbestos--Cement Siding iNoilex) PACE . . 67 Finishes Interior Colored.......................................................................................... 40 Limes for ............................................................................................ 30-32 Materials 'piaster) ...................................................................... 30-32 Plaster--ioo mode 32 Lobor for.................................................................................................... 47 Reody to use ................................................................................... 32 Fireproofing for Beams and Columns..........................................54,55 Ftreproof^-Cvpsum . 30 Fireproofing--Tile. Pvrooar ............................................................... 55 Fireproofness of Constructions. See assembly sections.... 6-21 Flan Pamfs ......................................................................... 70 Flattened Expanded Meral ................................................................. 68 Flexible Corner Beads ......................................................................... 25 Flooted Walls--Resilient system ......................................................... 26 Float finishes--Job mixed: table of................................................. Prepared--reody to use...................................................................... Floors--Design assistance . ................................................................. Cypsum........................ Four Mesh Z-Rib Metol Lath............................................................... Freflote Method for Rocklath .............................................................. Specifications ............................................................................................. Furniture--metal for .............................................................................. Furring--metal wall; specifications .................................................. Til*--gypsum ........................................................................................... 32 32 74 74 24 23 23 69 39 54 Caugmg Plasters--Description .................................................... 31,32 Toble of - . . Girder Fireproofing 32 ............................................................................... 55 Cram Boards--Sheetrock ......................................................................... 50 Grounds for ploster .......................................................................... 32,47 Guards--Area-way macnmery ond window.................................. 69 Guide to selection of points ................................................................. 72 Guide to selection of roof and floor construction................... 75 Gyplap--Construction details ............................................................ 45 Sheothing............................................................................................................ 44 Strength rest................................................................................................ 45 Cypsife--Definition............................................................................................ 30 Cypsum- -Acwantages m construction............................................... 4 Definition........................ 30 Fireproof........................................................................................................... 30 Fireproofing tile.......................................................................................... 55 Floors ............................................................................................................ 74 Plonk................................................................................................... '............ 76 Construction details .................................................................... 77 Floors and roofs......................................................................................... 75 Plaster........................................................................................................... 30-33 Roofs..................... . 74 Tile--Partition and furring................................................................. 54 Hardboards--Weotherwood .................................................................. Heat lost through roof constructions. Toble .............................................................................................................. Hot water calcimine ............................................................................... 52 74 72 Index to Assembly Section....................................................................... 5 Insulatiorv-- Blonket ........................................................................................................ 60 Board............................................................ 59 Rocklath .........................................................................................22, 58, 59 Sheetrock......................................................................................................... 59 Sound................................................................................................................. 26 Structural........................................................................................................ 58 Insulation value of various roof constructions........................ 74 Interior paints .............................................................................................. 70 Job mixed plaster finishes .................................................................... Joint system for Sheetrock..................................................................... joists--soocmg for metal loth .............................. Junior Bats--Red Top Ins. Wool....................................................... 32 42 38 60 Kal tCalcimine) ......................................................................................... Keene's Cement Varieties ...................................................................................................... Finishes--mode with............................................................................... 72 31 32 Labor Quantities--see under Material. Lath---Gypsum Rocklath ............................................ Metal ......................................................................... Weotherwcod Insulotmg .................................... Lathing--Costs. See assembly sections. Nails for ...................................................................... Specifications ............................................................ Light--Reflected by various colors....................... Lime for piosfermg ond finishes............................. In concrete ................................................................. Mason's............................................................................. Lime locking--Primer (point).................................. Machinery guords ....................................................... Masonry mortar................................................................. Paints................................................................................. Mason's Lime ................................................................. Bronds............................................................................... Material Assemblies Ceilings....................................................... ....................... Partitions.......................................................................... Walls.................................................................................. Material Quantities--ploster .................................... (See ossembly sections for others.) Metal Arches .................................................................... Expanded.......................................................................... Furniture........................................................................... Lath.................................................................................... Nails for ................................................................. Mortar for Cypsum Tile (Blockset!..................... Masonry............................................................................ Motif'd Acoustone ....................................................... Moulding Plaster............................................................ . . 22 . . 24 . . 58 . . 46 . - 39 . . 70 . . 32 . . 56 . . 56 . . 73 . 69 . . 57 . . 73 . 56 57 10-13 . .6-9 14-21 . . 47 - - 25 .. 68 . 69 24 46 31 57 84 85 31 Nailex Fasteners ............................................................ Noils and spacing for (arhs and waliboards Neat Cypsum Plaster .......................................... 57 *6 32. 33 BB012 2080  0 *o 0 G'lentol xrr>or Stucco Bose Stucco, Finish ........................ PACE .......... 40 32. 40. 41 Packaging--See material involved. Paint--Posfe..................... .................................................... Powdered ............. ................ Primer... ............................. ........................ Section comoiete .................................. -- Texture. . ........................................................................ Woter thinned ... ................................................ Port it ions--Assemblies................................................................... Fireoroof .................................................................................. Steel, factory ......................................................................... Paste Point ............................................................................ Porching Plosters ...................................................................... Perf-A-7aoe--Joint system for Sheetrock.................. Pertotone--Sound absorbing file.......................................... Perforated Rocklarh ................................................................. Personnti of Committee on standard specifications Plain Rockiath ......................................................................... Plonk . Cypsum floor and roof ................................................. Weotherwood................................................................................ Plaster Acoustical....................................................................................... A--for every purpose ............................................................ Base coat ................................................................................ Boses--Metal loth ................................................................. Rockloth .................................................................................. Weotherwood... . ................................................... Boards--Cypiop . "......................................................... Rockloth.......................... ............................................... Sheetrock................................................................................... Bond--For Concrete .............................................................. Brands............................................................................................... Cement tNeofi ...................................................................... Covercge of. defined ............................................................ Coverage of. toble................................................................. Descriptive...................................................................................... Fir-'hes............................................................................................. wiuging .................................................................................... Crounds for ....................... . .................................. Cvosum table of ...................................................................... toPor for ................................................................................... Moulding................................................................;....................... Neot. ............................................... .......................... Painter's.......................................................................................... Patching.......................................................................................... .. Prepared...................................................... ..................... Quantities, table of .............................................................. (See Assembly section also.) Relative cost installed ....................................................... Sanded........................................................................................... Sand for, specification ....................................................... Specifications............................................................................... Systems. Resilient .................................................................... .. BridiOint........................................................................................ Freflote................................................. ............................. Types compared (Rockiath) .......................................... Wood fibre ................................................................................ Poured in place decks and floors.......................................... Powder Points................................................................................. Predecorofed Wollboards .......................................................... Prepored Finishes (ploster) .................................................... Primer, K-Cemo ........................................................................... Lime locking .............................................................................. Roofing........................................................... . Purlins--(Sub.) Pyrofill roofs.................................................. Short soon tile ......................................................................... Pyrooor Cvosum Tile ................................................................. Beam and girder .................................................................... 8locksef Cement for............................................................ Fireproofing ................................................................................... Furring............................................................................................. Roofs................................................................................................. PyrofiH Roof Decks .................................................................... ... 72 ... 72 . . 70 .70-74 ... 73 ... 70 . . 6-9 . . 55 . . 69 . . 72 . . 73 . . 42 . . . 86 . . 22 . . 34 ... 12 . . . 76 . . . 48 . . . 88 . . 32 . . . 32 . . . 24 ...22 . . 59 . . . 44 . . . 22 . . . 42 . . . 32 . . . 32 . . . 32 . 31 . 33 ____ 30 . 32 . . . 31 .32,47 . . . 32 . . . 47 . . 31 . . 32 ...73 ...73 . . . 32 . .. 47 ...32 . . 32 . . . 39 . . 34 . . . 26 . . 23 . . . 23 . . . 32 . . . 32 . 80 . . . 72 48-53 . . . 32 . . . 73 . . 73 .63 . . . 80 . . . 78 . . . 54 ...55 . 31 54, 78 . . 54 . . . 78 . . 80 Quantities of motenol ond lobor, see "Assembly" sections 6-21 for Plaster ond lath........................................................................... 47 Quietone--Sound absorbent ......................................................... ... 88 Recessed Edge Sheetrock ......................................................................... 24 Red Top Insulating Wool......................................................................... 66 Reflection of light by colors.................................................................... 70 Relative Costs See materials ond assembly section. Resilient Plastering System .................................................................... 26 Riblofh Imetoll ........................................................................................ 24 Rockloth................................................................................................................ 22 Apolicotion methods .............................................................................. 23 Clips for..........................................................................................................23.26 Fire rating................................................................................................... 22 insulating..........................................................................................................21.59 Ndiled on . 23 Noils for . . 46 Perforated..........................................................................................................22 Roil Stick Siding ........................................................................................ 63 Roof--Cements..................................................................................................... 63 Coatings. ............................... .. ... .......................................... 63 Coverings.....................................................................................................62-66 Decks. Cvpsum. . . 74-81 Decks. Steel....................................................................................................... 82 Design assistonce................................................................................. 74 Felts...................................................................................................................... 63 Cypsum i structural i ............................................................................ 74 Primers........................................................................................... .63 Shingles.............................................................................................................. 64,66 Tile Pyrobar Short Spon ............................................................. 76 Roofing.................................. 62-67 s $obinite--Acousficol Plaster Coverage............................ .......... - Sate loads, robie of--Cypsum Plank. Steel Decks . . ..................... Sanded Finish Plaster GvDSum Plaster .. Sand--Specification `or .. Scratch coats 'Orienroi $tuccoj . Plaster for. specification ............... Sheothmg Cypiop.......................... . Weotherwood............................................ Sheetrock.................... ... . Construction details . . . Cram boards......................................... insuiotmg ............... ... Noils for ... ... . .. Tile boord................................................. Shelf-X................................................................ Shingles--Asbestos-Cement. . . Asphalt.......................................................... Short Spon Roof Tile............................... Siding--Asbestos--Cement ................- Roll Brick ................................................. Shingles ...................................................... Sound Absorbents.................................... Perfa tone..................................................... Quietone........................................................ Sobimte......................................................... Weotherwood............................................. Where to use (table) ..................... Sound Control Service............................ Proofing....................................................... Spacing--Noils, table ............................ Supports--See Studs ond Joists. Spockling Compound ............................... Specifications Brtdiomf System.................................... Freflote System....................................... Lath lAm. Sfd.) .................................... Plaster (Am. Sfd. >............................... Plastering--`'How to secure" .... Res. Plastering System........................ Rockiath--Clipped ............................... Nailed on ............................................ Trussteei Studs ....................................... Steel--Partitions....................................... Roof Deck ................................................. Studs................................................................ Structural Insulation............................... Stucco. Mesh (expanded) ..................... Oriental.......................................................... Studs--Steel, spoong for. rable. . .. Metal /ath. spacing for. rable. . . . Trussteei........................................................ Sub-Purlins--Pyrofill Roofs--table of Short span tile--table of.................. Supports--Spocmg of, metal lath . T Tee sizes. Short spon roof tile............. Texolife............................................................... Exterior............................... ... Deep Colors.................... . .. "Three Thirty*'......................................... White and tints .................................... Textone............................................................... Texture Paint................................................................ Plaster............................................................ Stucco........................................................... Tile Acoustical ............................................ Boord--Sheetrock............................... Weotherwood........................................ Weotherwood Hordboord ............. Furring--Pyrobar............................ Partition Pyrobar...................................... Roof Pyrobar............................................ Tongue and Croove--Roof Tile........... Trowel Finishes--Ploster ..................... Trussteei Studs ............................................ U USC Texture Point .................................. w Wall--Assemblies of materials for.. Boards............................................................. Cypiop................................................. Predecorofed.......................................... Sheetrock............................................ . . Weotherwood........................................ Floated resiliency. . . . . . . Paints.................................... ....................... Plasters........................................................... Sound msulotive.................................. Wafer Thinned Paints ............................. Weotherwood................................................ Asoholt Cooted Sheothmg.................. Hordboord..................... .......................... insulation..................................................... Loth........................................................... .. Nails for .................................................... Plonk................................................................ Ploster base .................................... Sheathing. .. ............................. Tile................................................................... Wailboord.................................. Window Guards ....................................... Wood fibre gypsum plaster..................... 2-Rib Lath (Metal).................................. PACE . . . 38 . . . 32 ... 76 . . 32 32 . . 32 39, 47 . 40 . . .35 .. 58, 59 ............. 42 .......... 43 . . . 50 . . .42. 59 .......... 46 ........... 53 ........... 68 ____ 66 . . 64.65 . . . . 78 .......... 67 .......... 63 ...64-66 ........... 86 ........... 86 ........... 88 ........... 88 .......... 48 ____ 84 . . .84 ........... 26 .......... 46 ........... 73 .......... 23 .......... 23 ____ 37 ........... 34 .......... 5 .......... 26 .......... 23 ........... 37 .......... 28 .......... 69 .......... 82 ........... 28 . . 58 .......... 24 .......... 40 .......... 37 . . . . 38 ........... 28 .......... 80 .......... 78 ........... 38 ... . .......... .......... ........... ... ... ........... 78 73 73 72 73 72 72 .......... 70 .......... 40 46 . 84-89 .......... S3 ........... 48 ... . 52 .......... 54 ........... 54 ... 76 ........... 76 .......... 32 ........... 28 . . 72 14-21 42-48 ...........48-53 42, 50. 51, 53 ............................ 48 26 .................. 70 ......................... . 32 26 ..................... 70 ...................... 48 ..................... 58 ................... 52 ................... 58 , . 58 ..................... 46 ..................... 48 ..................... 58 58 ........................ 48 -*8 ..................... 69 ..................... 32 ......................... 24 BB012 2081 STAGES OF GYPSUM IN BUILDING CONSTRUCTION GYPSUM . THE SOURCE OF MANY UTILITIES Inherent in Gypsum, and reflected in all of its products are an array of utilities that is rarely found in a single substance. Most of these utilities have a direct bearing on the econom ics of construction. Some of these assets are inherent; a few have been built in by research and experi ence. In Gypsum we have a hydraulic cement: 1. Which is plastic -- may be cast or trow eled to produce any form. 12. Which contains no alkalies to saponify the oil in paints. Which may be success fully painted with Texolite as soon as it has set. 13. Which is essentially light in weight -- puts no excessive burden on supporting framework. 14. Which has possessed these qualities for centuries under constant test in build ings since the Pyramids were built. 2. Which possesses a controllable set -- from one minute to "hours." 3. Which does not shrink when it sets, but actually expands slightly to fill areas and molds. 4. Whose strength, after setting, is con trollable within wide limits -- up to 12,000 lbs. per square inch in compression. 5. Which is a useful heat insulator. 6. Which not only does not burn nor sup port combustion, but provides an unsur passed fireproofing agent possessing many exclusive advantages. 7. Which supplies no food for vermin or bacteria. 8. Which sets at the predetermined time without need for substances or gases out side of itself to cause set -- which requires no aging or curing period. 9. Which, when set, holds nails well. 10. Which can be left in its natural mar ble-like white state, or can be integrally colored, textured, painted or papered, by any known method. 11. Which bonds to itself, and to any type of lath used for plastering -- practically monolithic on Rocklath.* RESEARCH AND CONTROL With its production predicated on the maxi mum in quality and leadership in innovations and betterment, the company long ago recog nized the value of directed research which could increasingly utilize the inherent prop erties of Gypsum. The Building Materials Research Labora tory of the United States Gypsum Company, long a feature of the production program, was consolidated and enlarged in Chicago in 1927. It is housed in a special building providing over 26,000 square feet of labora tories and staffed by 90 technicians and scien tists. At this laboratory there is a constant search for better ways of doing those things the company already does well. There is di rected research leading toward the invention of new methods of solving building problems more economically, with constructions struc turally better, or both. Here, likewise, the possibilities of new raw materials are inves tigated and control over the adhesion to the specifications of the laboratory for the production of every company product is exercised. Construction innovations, developed at the laboratories from Gypsum, utilizing these time tested structural assets, are likewise time-tested, and though new, find ready acceptance. UNITED STATES GYPSUM COMPANY CoDYTiqftt 1942. The U^iteo Stafw Gvosum C* 'Reg. Trade SL.r* BB012 20R2 material assemblies INTERIOR PARTITION ASSEMBLIES Wood Frame Buildings, Bearing or Non-Bear' ing, and Fireproof Assemblies 6 to 9 CEILING ASSEMBLIES Including Fireproof Constructions m 10 to 13 EXTERIOR WALL ASSEMBLIES Inner and Outer face. Wood Stud and . Masonry Constructions 14 to 21 HOW TO USE THIS GUIDE TO SECURE SOUND, SAFE SPECIFICATIONS FOR PARTITIONS, WALLS AND CEILINGS ROCKLATH METAL LATH RESILIENT PLASTERING SYSTEM TRUSSTEEL STUDS GYPSUM PLASTERS AMERICAN STANDARD SPECIFICATIONS Coerteijr American Standards Anoclatlo* ORIENTAL STUCCO AND ORIENTAL INTERIOR FINISH 22 and 23 24 and 25 26 and 27 28 and 29 30-33 34-39 40-41 1. From the tables of material assem blies (pages 6 to 21) select the one which best serves your purpose. Note the type number. 2. From pages 32 to 33 select the plaster and finish you want (if required). Note the type number., 3. Then describe areas involved and your material specification will read: ". . . using United States Gypsum Company's Type No. C3-B1 -FI' all to be applied in full conformance to the Stand ard Specifications of the American Stand ards Association for Gypsum Plastering including Requirement for Lathing and Furring." In the specification above, the Type Nos. given as an example represent the following: C3 (Perforated Rocklath and Plaster), Bl (Neat Gypsum Plaster) and FI (Prepared Trowel Finish). The American Standard Specifications are printed in full on pages 34 to 39. SHEETROCK WALLBOARD GYPLAP SHEATHING See Complete Index pages 2 and 3 for all materials. 42-43 and 48-53 44-45 a a o ftj 5oIU a u 40 YEARS OF PROGRESS THROUGH RESEARCH*. INTERIOR PARTITION ASSEMBLIES WOOD FRAME BUILDINGS--Wood Studs, Bearing or Non-Bearing 3y WOOD 'LATH / /PLASTER r-ROCKLATH t PLASTER . Poge i ! Thick- I ness (In.) i ' Wt./sq. ft. | Complete | Both Sides Plastered Fire | Specific Resistance | Advantages Including . Rough and Finish . Floor 32 5 Vs i ' 13.8 lbs. I 1 1 ! 30 min. 22 32 , 5& ii 13.0 lbs. 55 min. Added fire protection t Average 1 Suggested Sound Trans- Decoration mission Loss See note page 9 I Relotive Type j Cost i No. |I See note (page 7 i 32.5 i Texolite, other 1n ! point or paper pi 39.0 Texolite, other paint or paper ii P2 22 32 5% 1 3.0 lbs. 1 hr. 24 j 32 1 5 Vs ` j 16.0 lbs. 1 hr. Maximum tection of fire low pro cost 39.0 i Fireproof; resists crock-producing ! 38.1 distortions Texolite, other point or paper in l i P3 Texolite, other paint or paper 'VIII P4 mSkvMi _ 1 i 24 32 5 Vs : 26 1 22 32 i 6 Ye 26 1 24 32 ! 5% ; 15.0 lbs. 1 hr. 13.0 lbs. No test 16.0 lbs. No test Fireproof; resists crack-producing : 38.1 distortions Excellent crack resistance; superior sound insulation i `51.9 i i Combines resilient principle with known values of metal lath ! No test ' Texolite, other paint or paper i VIII ] i P5 Texolite, other point or paper IX P6 Texolite, other point or paper XII! P7 42 4 b i 4.8 lbs. Fire resistive dry 24V2 min. wall with con cealed joints No test 42 4 5/s 5.8 lbs. 41 Vi min. Heavier than P8 No test ' 50-51 ' 43/8 ! i 1 53 : 4% 4.8 lbs. 24 */2 mm. Beouty of natural wood paneling No test 4.8 lbs. 24 l/2 min. Simulates ceromic tile at low cost ! No test Texolite, other point or paper Ill P8 Texolite, other point or paper IV P9 $e!f-decoroting XII P10 Enamel I : ix PI 1 N 30VATIS f ClYPSUM COM PA* NOTES Relative Cost*--Higher figures in this column represent higher probable installed costs, lower figures; lower costs. They represent relative position, not proportionate differences. Variations m local material prices, wages and practices make accuracy impossible. The relative costs, labor and material quantities given on these pages, are offered as an aid to preliminary selection only. Material and labor quantities for all plasters will be found on page 47. Quantities of material and labor per 100 sq. yds. of partition, both sides. , jMaterial Quantity Labor USE ANALYSIS AND ECONOMICS (All supporting members are on 16" errs, unless shown otherwise.) Wood Studs Wood Loth 680 lin. ft. 2900 pcs. 9'/i hrs. 1 6 hrs. Once q stondqrd construction, now largely superseded by Gypsum Loth (below). Plaster on wood loth is less fireproof, more prone to cracking, there is less bracing of the structure, `'loth marks" show on plaster, sap and resin exude to stain walls. Rocklath 1 800 sq. ft. j 12-14 hr Savings in erection and plaster make Rocklath competitive. No slivers or dirt to infect lather's hands. No wetting required. Less nails to buy and drive. Provides stronger bond. Braces the building. Verminproof. Complies with all Building Codes. Keeps moisture of plastering from wood framework. Reduces inspection costs. No small boy thefts. Practically no lath waste as cut pieces can be used. Perf. Rocklath 1800 sq. ft. 12-14 hr All above advantages, plus increased fire protection at no increase in cost for lath. Full V2" of plaster is recommended. Provides full one-hour fire rating for partitions m wood frame buildings at costs of less efficient wolls. 11 Diamond Mesh Lath j 1' 210sq. yds.j 1 6 hrs. i! 1 Z-Rib Metal Lath 210 sq. yds.| 1 6 hrs. A better construction at a higher once. Strongest plaster construction. Braces building. Resists crack ing forces with greater strength. No lath marking. Adds sales values to buildings. One-hour fire rating. Specially recommended for bathrooms and kitchens in homes where lower cost constructions ore used in less critical locations. Diamond Mesh Lath ossures full specification thickness of plaster, os walls will not be level if plaster is skimped. Reduces complaints. A plus |ob for owner, architect, dealer and contractor. Z-Rib Lath produces fewer plaster droppings, saving plaster. The additional rigidity supplied by the ribs permits the use of lighter weight lath on the same spans. Rockloth Resilient Clips No. 1 11800 sq.ft. j500 i 24 hrs. Maximum crack freeness. Walls are "floated" on springs. Movement in supporting framework due to settlement or warping cannot be transmitted to crack plaster until movement exceeds capacity of spring clips. Most sound-insulative construction available for wood frame buildings. Plaster coat can not be skimped. A superior construction for the better residence. Metal Lath Res. Clips No. 200 or No. 1 00 21 0 sq. yds. 1350 j 32 hrs. The double crack resistance of plaster, reinforced with steel, floated on spring steel clips. All advan tages of P6 above plus those of metal lath. A super construction for those who desire the maximum in refinement in plastered walls for wood frame buildings. Sheetrock Perf-A-Tape* ' optional 1 i !1800 sq* ft 24 hrs. 3 boxes* | 20 hrs. Maximum value in wallboard construction. Fully decorable by any standard method. Joints may be fully concealed, covered by mouldings to produce panel designs or exposed frankly in the modern monner. Use secures foster completion of building. Ideal for alterations and repairs. Resistance to fire ond flood exposures has been fully established by on experience record of over 20 years. Requires less paint than other wollboard. Sheetrock Perf-A.Tape 1 optional) 1800 sq. ft. 3 boxes* 24 hrs. 20 hrs. Increased fire protection. More rugged and heavier than construction P8 at nominal cost difference. Sheetrock Sheetrock Tile rd 1 reerf-A-Tape rely needed 1 j1800 sq.ft, 24 hrs. 1 See pages 50-51 for illustrations of available wood groin reproductions. A fully predecoroted woll in keeping with present demand for natural wood wainscots and wall surfaces. Surfaces may be main tained by woxmg or cleor lacquer. Reproductions of natural wood grains rtvol appearance of octual wood. Joints between panels are generally left without treatment and frankly exposed. Nail heads are readily concealed. j 1 1800 sq. ft. i 3 boxes* | i I 24 hrs. Effective in bathrooms, kitchens, laundries, long halls, powder rooms, etc. in either wainscot or full 1 20hrs. ceiling high installations. Impressed mortar joints may be painted a cpntrastmg color. For wainscot ! work m bathrooms and kitchens sizes of boards are such that little, if any, joint treatment is required. Perf-A-Tope combination box for 250 lin. tt. of joint. fcS02 21038 40 YEARS OF PROGRESS THROUGH RESEARCH I ^. PARTITIONS (Continued) , VVEATHCRWOOO f HARD0OARD (bAULN STRIPS) r WEATHER WOOD J K/j \f HARDBOAOO Wf./sq. ft. Fire Complete Resistance Both | Including Sides ! Rough and Plastered I Finish Floor Specific Advantages Average Sound Trans ' mission Loss See note Poge 9 Suggested Decoration Relative Type Cost No. Il See notei P 7 ; 3.3 lbs. ' No test Unit wall textured ! surfaces. Sound 30 g : absorbent Self-decorating. May be painted with Texolite or other paint PI 2 ' 3.4 lbs. 1 No test Variations in tile size, texture and color. Sound absorbent ! 30.0 3.4 lbs. 1 No test Variations in plonk 1 width, color and texture. Plonk 30.0 interlock. Sound absorbent Self-decorating. May be painted with Texolite or other paint [ i j A* P13 Self-decorating VII PI 4 4.2 lbs. No test No furring strips. I Tile interlock. ; 33.0 Sound absorbent 1 [Self-decorating ;X PI 5 3.2 lbs. No test Excellent for dodos and wain scots 30.0 52 3Ve 3.3 lbs. ; Notest Adds simulation of tile to PI 6 1 . 30.0 Unpairred or enarriei : Pi 6 Enamel ,XI P17 FIREPROOF PARTITION ASSEMBLIES 24 32 22.0 lbs. 1 hr. Space-saving standard partition ; 37.7 PVHOBAR gypsum tile 28 | | 2.8 Add 1 e 5 32 1 V2" : jm Lb to stud ! . ^ * . ___ Studs) 1 hr. 54 | 32 4 20.0 lbs. 2 hrs. Provides space for j ducts ond vertically conduits and ; | 44.8 horizontally j Low cost standard i fireproof non- | bearing masonry j 37.6 partition 54 1 32 5 I: 23.0 lbs. 1 iQhrs- I 59 min. Increased fire pro tection over FP3 38.4 Texolite, other point or paper VI FPI Texolite, other paint or paper VII FP2 Texolite, other v paint or paper I 1 , Texolite. other paint or paper 1 VII FP4 UNITED, STATES GYPSUM COMPANY NOTE SOUND TRANSMISSION--F igures are from laboratory tests on constructions built to standard manu facturers' directions. Confirmation by test under other than laboratory conditions is not guaranteed. Material and labor quantities for all plasters wilt be founa on page 47. ?orltr%0^pt";!ortot7b7d': USE analysis and economics Material Weatherwood Batten strips . Quantity | i 1 1800sq. ft. | 600 1 in. ft. ! Labor 8hrs. 6 hrs. [ (All supporting members are on 16 errs, unless shown otherwise.) { Low cosr ir,sulative partition for buildings where economy is a maior factor. Needs no painting. Mildly textured surfaces in either gravisn ran or ivorv. May be painted economically with Texolite. See page ji 70. Batten strips over joints may be omitted. 1 1 x2 Purring ! Strips t 1 2" ctrs.. I 1 800 lin, ft. Weatherwood ! jTile 1 800 sq. ft. | Interesting tile patterns in blended colors. Concealed nailing. Ogee edge (see poge 48) permits 8-10 hrs. movement in board or sfrucrure without producing unsightly gaps at (Oints--prevents air infiltration at unsupported joints. 12"x 12" tile requires cross furring every 12"; 16" file only when vertical 16-20 hrs. joints are broken. All larger sires may be applied direct to studding without furring. Furring (if re quired 16" ctrs.) 1360 lin. ft. Weatherwood 1800 sq. ft. 8 hrs. 16-20 hrs. Provides many pleasing variations of decorative treatment at moderote cost. Cross furring on 16" centers is necessary when random width planks ore applied vertically. No furring is applied when planks are applied horizontally across the studs or where 16" wide planks ore used vertically. (See page 48 for available colors, blends and illustrations of Weatherwood Plank.) ' Weatherwood V-T tile 1 800 sq. ft. 14 to 18 hrs. Heavier tile than P-14. Ogee edges Isee page 48) on all four edges of tile. Permits installation with out furring strips. Wide vanarion of decorative tile patterns in blended shades of grayish tan and ivory or m straight colors provide interesting effects. Weatherwood Hardboard ' ji { 1800sq. ft. 1 18-22 hr?. !j ii jWeatherwood , Hardboard Tile 1800 sq. ft. 18-22 hrs. i Particularly valuable for wainscots and areas where heavy traffic might scuff less rugged material. May be left unpainted or may be varnished, waxed, lacquered or enameled. Used wherever a low cost reproduction of ceramic tile is desired. The exceptionally hard surfaces resists wear better. May be given any decorative treatment. 3,j" Channels Metal Lath Plaster Sand 1 910 lin, ft. j , ; 105 sq. yds. nrs' 4800 lbs. 1 3ri . . ; 4.5 cu. yds. , 30 hrS' Trussteel Studs . 3.4 lb. Z-Rib l 680 feet i ,, , Lath j 210 sq. yds.) 32 h s` 3" Hollow Pvrobar Gypsum Tile 855 sq. ft. 720 lbs. Blockset Cmt. Sand .9 cu. yd. i | 1 8 hrs. j i 4" Hollow Pvrobar Gypsum T ile Blockset Cmt. Sand 855 sa. ft. 1 900 lbs. 1 19 hrs. 1.12 cu. vds. i Spacing of studs on 12", 13 Vi" or 1 6" centers is set generally oy local ordinances, practices or economy (these calculations are for 12" centers/. Their frequency has little effect on the strength of the partition. An ideal, lightweight, quickly built partition for fireproof structures saving many sauare feet of floor space in buildings wirh long corridors and many small rooms. Each time a partition is used from 2" to 4" is added to the width of the room. Economical for fireproof housing as its rela tively high sound insulation provides much needed isolation between rooms and apartments. Keeps conduits, ducts, etc., within partition spaces. Alterations in conduits moy be made ot any time after completion without damage to walls as conduits may be placed vertically between studs or horizontally through studs without weakening them. Simple, fast erection. Materials readily trans ported in passenger elevators for alterations in existing fireproof buildings. An adaptable, highly fireproof, lightweight partition, easily altered. Ideal for office buildings where changes in partition location and new openings m partitions are freauenf. Most fireproof partition known for its weight, cost or thickness. Time tested. Cleon working. Minimum breakage loss in shipment and erection. Twice the fire resistance of FP3, at nominal increase in cost. Ideal partition for stairway and Elevator enclosures in fireproor buildings and corridor use where ordinances demand a 4-hour fire rating. Both FP3 and FP4 have peen standard construction accepted everywhere for upwards of 40 years. The sim plicity with which -hev may be removed, re-erected and altered to suit cnangmg building occupancy, their full compliance wirh insurance and ordinance requirements is well known. 9802 2I0QS .,40. YEARS OF PROGRESS THROUGH RESEARCH* UsS CEILING ASSEMBLIES Page Depth to Face . Weight of Finished 5q. Ft. Ceiling (In.) 1 j '' j 32 j 3/4 6 lbs. 1 1 t 22 i 32 ; 7/s ii t 5.5 lbs. 22 32 Va 5.5 lbs. Fire Resistance ' Including Rough and . Finish Floor Heat Conductivity per Sq. Ft./Hr./9 Diff. in B.T.U's. (Includes V\' Yellow Pine Rough Floor) , Suggested Decoration 1 | ! Relative Type Cost No. Itt note > j pa , 1 No test .28 Texolite, other point or paper ii Cl I No rest .28 1 ' i . 1 hr. vith 1 jj stripped 1 .28 ! joints 1* Texolite, other 1 j| jpaint or paper i , !1 Texolite, other j| | point or paper 1' ^ j ] 1 j I 22 1 32 | V* 5.5 lbs. i 1 No test j .21 i1 1 Texolite, other point or paper IV C4 58 j 32 1 1 6.0 lbs. i _________ !________________ jI 30 min. 1 1 .21 24 32 Va 7.3 lbs. 1 hr. .30 24 32 Va 26 i 2322 IlM i 1 26 1 24 i 32 i 1 Vs 7.3 lbs. ! 1 hr. 1 l : .30 5.5 lbs. [ No test I .28 . j | < 7.3 lbs. ! ! j ! No test 1 , : ' .30 ' UNITED STATES GYPSUM COMPANY 1 j yTexolite, other point or paper : Texolite, other ! yj point or paper , 'i s . Texolite, other 1 paint or paper VI '1 'i C5 i ii C6 | i1 C7 1 I '1 ! Texolite, other ; paint or paper 11 1! | |8 ! '1 i ;j Texolite, otherI ^ paint or paper j i \ i* i C9 i 1 -"W 1 ts> or-------------------------------------------------- vt nr ao.t >4, NOTES Relative Costs--Higher figures in this column represent higher probable installed costs, lower figures lower costs. They represent relative position, not proportionate differences. Variations in local materia prices, wages and practices make accuracy impossible. The relative costs, labor and material quantise: given on these pages, are offered as an aid to preliminary selection only. Material and labor quantities for all plasters will be found on page 47. Quantities of material and labor per j100 sq, yds. of partition, both sides. Material 1 Quantity Labor j i USE ANALYSIS AND ECONOMICS (All supporting members are on 16" ctrs. unless shown otherwise.) Wood lath For plaster see page 47. 1450 pcs. 8 hrs. Practically displaced for both ceiling and side wall use by gypsum lath because of reduced fire pro tection and tendency to greofer cracking and lath marking, particularly on top floor ceilings. Rockioth See poge 47 for plaster. 900 sq. ft. 6-8 hrs. A superior ceiling lath and plaster construction at a competitive price. Resistance to bond failures and cracking forces is increased. No wetting required previous to plastering. Uniformly insulotive. Wood lath markings do not show on finished work. Available nationally made to the same high stondords of excellence; no venotions in quolity or grade os with wood. Perforated Rockioth See poge 7 for plaster. 900 sq. ft. 6-8 hrs. Perforations increase fire protection. Full hour rating for ceilings plastered on Perforated Rockioth is secured by applying five Vs" nails through Rockioth into joists ot each bearing and then strip ping each joint with metal lath strips nailed on with IV4" galvanized 12 gauge roofing nails every 4", producing low cost 1 -hour fireproof ceiling construction for wood frame structures. Joists must be floored with rough and finish floors to secure fire rating. Insulating Rockioth See poge 47 for plaster. 900 sq. ft. 6-8 hrs. Adds useful insulation at small cost. Metal foil also makes most effective vopor barrier. Excellent method of gaming insulation for low cost homes at increase m cost averaging 1c per sq. ft. of ceiling over regular Rockioth. Since insulation is inregroi with lath there is no additional cost for installation. Weofherwood Plaster Base 900 sq. ft. 6-8 hrs. Weatherwood insulating plaster base is available at about 2c a sq. ft. increase over the cost of Rockioth. This standard type of integral insulation does nor require an air space to be effective. Bond with piaster is ample. Lath marks do not show on the ceiling. Diom. Mesh Metal Lath See page 47 for plaster. - Z-Rib Metol Loth See poge 47 for olaster. 1Q5 sq. yds. 8 hrs. 105 sq. yds. 8 hrs. For full hour fire rating metol loth must be nailed with 1 Vz" 1 1 gouge 7/16 head barbed wire roofing nails on 6" centers. Increased crack resistance because of reinforcement afforded by metal. Ideal ceiling construction where spans are long because of greater protection against deflection cracks in plastering. No lath marks on top floor ceilings. Joists must be floored with rough and finish floor to secure fire rating. Z-Rib Metol Loth slightly more expensive than Diamond Mesh but stiffer construction. Will soon joist spaces with less flexing under the application of plaster, consequently, saving some plaster. Cost com pleted about the same as small Diamond Mesh Lath above. Choice between these constructions is largely a matter of personal opinion. Rockioth Rockioth Clips No. 1 Clips No. 2 See poge 47 for plaster. 900 sq. ft. | 400 j 200 1 2 hrs. Supplies resilient system for ceiling constructions. Floated ceilings may be used on long spans with less donger of crocking. Increased sound insulation mokes resilient system desirable on ceilings in apartment houses. Metal Lath No. 200 or No. 300 Resilient Clips 105 yds. i ; : 675 i 16 hrs. Combines resilient principle of construction C-8 with steel reinforcement for ploster. A superior con struction for ceilings in wood frame buildings. Practically comploint-proof ceiling construction. 8802 sroaa 40 YEARS OF PROGRESS THROUGH RESEARCH (k) CEILINGS (Continued) Poge I Depth to Foee Weight of Finished Sq. Ft. Ceiling (In.) Fire j j Resistance Heat Conductivity per (Minutes) Sq. Ft./Hr./a Diff. m Includes 1 B.T.U's. 'Includes Vs" Rough and ! Yellow Pine Rough Floor) Finish Floor I Suggested Decoration ; Relative Cost I See note page IS Type No. 42 ; yB 1.5 lbs. No test .3C Texolite, other point or paper CIO 42 '/p l 2.0 lbs. No test .28 \ Texolite, other ; ^ I pamr or paper ! I Cl I I 48 '/2 .75 lbs. No test .22 Optional C1 3 48 : 1 Vi !' Wf ATMCPWOOn flNlMI PiANK ' ' ^ j j / FURPlNG r 48 l'/j .75 lbs. No test .22 .75 lbs. | No test .22 ; Self-decorating I VIII Cl 4 Self-decorating ;vil Cl 5 FIREPROOF CEILING ASSEMBLIES 32 H 24 | 32 : V* j 24 ' 32 . ]Vi 24 Varies 32 | 1i1 3 to 5 lbs. i No test i !i i i: 7.3 lbs. 1 11 No test 1 j 7.4 lbs. No test ! 1 7.4 lbs. No test 1i ! Texolite. other i:j1 1 paint or paper j i Texolite, other 1 Vonotions in insulation i values of supporting paint or paper 1 structure prevent fixing : 1 hear losses through these . constructions ! Texolite, other i paint or paper ! i | iI i j ! 11 ' HI ij Texolite, other paint or paper iv i i : ci 6 i i 1 j C17 ! C1 9 i| 1 1 1 C20 i united, states.gypsum company NOTES Relative Costs--Higher figures in this column represent higher probable installed costs, lower figures; lower costs. They represent relative position, not proportionate differences. Variations m local material prices, wages and practices make accuracy impossible. The relative costs, labor and material quantities given on these pages, are offered as an aid to preliminary selection only. Material and labor quantities for all plasters will be found on page 47. Quantities of material and labor per 100 sq. yds. of partition, both sides. Material Quantity Labor ; | USe ANALYSIS AND ECONOMICS (Ail supporting members are on 16" errs, unless shown otherwise.) Sheetrock erf-A-Tqpe 1 Optional 1 900 sq. ft. 1 V2 boxes* ' , q, rs` u rs' All of the universally recognized and well-known advantages of gypsum wallboard applied fo ceiling construction. Either insuloting Sheetrock or the inclusion of Red Top Insulating Wool in conjunction 1 with regular Sheetrock is suggested for top floor ceilings. Sreetrock ?erf.A-Tape (Optional) j 900 sq. ft. 1 Zi boxes" 1 12 hrs. 1 0 hrs. Weatherwood Batten Strips i Optional) 900 sq. ft. 600 lin. ft. 6 hrs. 6 hrs. Stronger, more rugged construction than that described in C-10 at very slight increase m cost. More fireproof and more rigid. Lowest cost ceiling construction consistent with good building practice. Adds useful amount of heat insulation. Board can be used os it comes from the dealer or painted and decorated immediately after installation or later. 2 " Weatherwood Tile :urrmg Strips 900 sq. ft. 900 ft. 8- 10 hrs. 4-5 hrs. Very popular decorative ceiling treatment far new buildings or over old plaster in existing buildings. In new buildings 12x12 tile will require furring strips on 12" centers. 16x16 tile only require fur ring strips when |Oints are broken; for larger sizes furring strips can be omitted. Has all advantages of Ogee Edge described on page 48. 1 2 " Weatherwood Plank 900 sq. ft. 8-10 hrs. Not usually used in ceilings except where special decorative effects are desired, usually in large rooms, public buildings, restaurants, rathskellers, etc. The shape of the plank lends itself readily to rectangu lar celling designs in relief and particularly well for constructions domelike in nature. Bondcrete ; | Best known, most umversolly used speciol plaster for application direct to interior concrete surfaces, i i ! Amount of plaster required and labor needed will vory somewhat with nature of rhe surface to which , 1660-2200 6-16 hrs. i the material is to be applied. If concrete surface is sufficiently rough and void of greasy and oily , lbs. j materials, plastering costs are increased but slightly over normal plastering materials. Proctically eliminates the hazord of applying plaster direct to concrete. Rib Lath Dios ter see -sge 47. 1 05 sq. yds. ; 12-16 hrs. ! .: i The use of 3/s " rib metal lath permits spacing of ceiling supports at not over 19", eliminating use of Va" channels for ceiling construction purposes where light, pressed steel beams or bar |Oists are used. The standard construction m lightweight steel buildings of this type. Rib metal lath may also be laid across the upper flanges of |Oists of this character to serve both as reinforcement and forms toi light concrete slabs, cutting construction costs and definitely reducing the time of construction. 1 i" Furring Channels Metal Lath ror plaster see page 47. ' 750 lin. ft. 105 sq. yds. ?n, ors- i- " Furring Channels i 1 6" -- centers! 2- Runner : - 750 lin. ft. .. 20 hrS* ^nannels ^etql Lath 250 lin. ft. ; 105 sq. vds. 1 When not spaced over 16" on centers, 34" furring channels may be used to support metal lath ceilings where the supports for the channels are nor greater than 4' on centers. The difference in economy between the use of rib mefol lath and sfroight metal lath in constructions of this character is best determined after investigation of local prices. Further consideration governing the spans of each will be found on page 38 in paragraph 19 of the American Stondard Specifications. Standard suspended ceiling construction in fireproof buildings; its supremacy for the purpose hos never been contested on either a utility or cost basis. The lightweight channel grillage is flexible in appli cation, ornamental arches, groined ceilings and seemingly difficult framing are executed with ease by any competent lathing and plastering contractor. 'Perf-A-Tape combination box for 250 I in. ft. of joint. 0602 21089 ' 40'YEARS OF PROGRESS THROUGH RESEARCH; EXTERIOR WALL ASSEMBLIES INNER FACE -- Studs |Page ! Thickness of Applied Materials (In.) 1 Wt. of Applied [ Materials j /sq. ft. i j32 6.9 lbs. 22 32 Va 6.5 lbs. Special j Characteristics i Stondard construction for frame buildings Suggested Decoration Type No. Texolite, other paint or paper 1 | j IW1 t1 : '< j' Improved fire protection over IW1 Texolite, other paint or paper ; IW2 :!//- INS. POCKLATH r PIASTER WEATHERWOOL INS PlAS UASE ! PLASTER 22 32 V* 6.5 lbs. 22 32 Va 6.5 lbs. 48 32 1 5.7 lbs. 24 32 3/i 8.0 lbs. 24 32 26 22 32 1 V* 26 24 |1 32 ! 1 Va i 42 ! Va 11 42 I Vi 8.0 lbs. 6.5 lbs. 8.0 lbs. 1 1.5 lbs. 2.0 lbs. UNITED STATES GYPSUM COMPANY Maximum fire protection in low to medium priced constructions. Texolite, other point or paper ; IW3 ' Adds reflective insulation at low cost to IW2 Texolite, other point or paper ! IW4 j Adds standard insulation at slight additional costs Texolite, other paint or paper i IW5 Adds crack resisrcnce. Increases plaster Thickness. Texolite, other paint or paper i i IW6 I Reduces plaster quantities of IW6. Permits lignter gauge metal because of stiffening rib. Texolite, other point or paper i iw7 Spring "floated" wall. Reduced possibility of crocks due to structural movement. No lath or stud markings ; Texolite, other j paint or paper IW8 Combines excellencies of metal loth with proved advantages of floated wail principle Texolite, other paint or paper IW9 ' Dry wall construction reduces time of completion. With unfinished |0inrs costs less than plastering. Joints mav be finished to simulate plaster at costs the some or greater than olastering. Texolite, other paint or paper More expensive and heavier than IWI0. Increases strength and fire protection j I j Texolite, other paint or paper IW10 , | l 2 i IW1I >cs -a---------------- m NOTES RELATIVE COSTS--The variation m possible combinations of materials makes it impossible to usefully relate costs of the constructions shown. The relative cost column for the interior partitions 'Pages 6 to 9) will serve if all other conditions are alike. FIRE RESISTANCE--Similar variations m sheathing, masonry, etc., and lack of tests make comparisons of fireproofness difficult. The figures given under "Inrerior Partition Assemblies'1 i Pages 6 to 9 > should be helpful if used with discretion. HEAT INSULATION--Heat loss figures for assemblies of exterior wall materials mav be secured bv reference to the current "Guide" of the American Society of Heating and Ventilating Engineers where many of them have been calculated. Those which have not may be quickly calculated bv following the data and instructions of the "Guide.1' Material and labor quantities for all plasters will be found on page 47. Quantities of material and labor per 100 sq. yds. of partition, both sides. Material . Quantity ; Labor i ; j j USE ANALYSIS AND ECONOMICS (AH supporting members are on !6 ctrs. unless shown otherwise.) Wood Lath ^r Se* fof Plaster see i 1450 pcs. 1 ; pcge 47. j I 8 hrs. , ' j i This construction once excellent practice for wood frame structures has been almost entirely super| seded by gypsum loth nailed directly to the framing, l Rocklath For plaster see page 4*?; studs page 6. | 900 sq. ft. | 1 Perforated Rocklafh For plaster see page 47 ; studs page 6. ! 900 sq. ft. 6-8 hrs. ' 1 | 6-8 hrs. A superior, standard construction now available at costs no greofer than those of combustible materials. Fire rating almost double. No industrial hazards due to infections from wood loth. No wood lath marking usually noticed on exterior walls. Use of perforated Rocklath increases fire rating in wood frame buildings. Should be covered with full Vz* of plaster to reduce tendency to mark at perforations. Insulating Rocklafh For plaster see page 47 ; studs page 6. 900 sq. ft. 8 hrs. Lowest cost method of supplying combination vapor barrier and useful insulation for exterior walls at slight (Ic per sq. ft. average) increase m cost for material ond no increase m labor quantities. Construction mointoins oil of the advantages of standard Rocklath as a plaster base and fireproofing material for wood frame structures. Weatherwood ; Insulofing i Plaster Base 900 so. ft. For plaster see page 47 ;studs page 6. 8 hrs. Diomond Mesh Metol Loth For plaster page 47; studs page 6. 105 yds. Z-Rib Metal Lath For plaster see page 47 ; studs page 6. 1 05 sq. yds. 8 hrs. 8 hrs. Rockloth No. 1 Resil. Cl IDS No. 2 Resil. Clips 900 sq. ft. 510 90 | 1 2 hrs. j , , 1 Combines well-known fiber board insulation qualities in an excellent plaster base. Wearherwood insulotion does not require an air spoce to be effective. Increase in cost over standard Rockloth pos tering base is about 1 '/2C per sq. ft. Can be used without increase in labor of application as insulation and plasrer base are installed simultaneously. Plaster reinforced with metal. Provides increased protection against cracking forces. One hour fire rating. Standard construction for the better class |ob in wood frame buildings. Stiffening nb of Z-Rib Metal Lath permits greater spacing of supports or lighter gouge metol than that normally used for Diamond Mesh Lath. Permits some plaster economy. Priced somewhat higher than construction IW-6. Completely plastered will normally result in a wall no more expensive than that of IW-6. j 1 Walls fully floatedon springs. Movement msupporting structure due to settlement or twisting of j frame much less aptto produce cracks.Floating of wail free from studseliminates both lathmark ing and stud marking on exterior wall construction. 1 Metol Lath Resil. Clios No. 200 or No. 500 105 sq. yds. 1 6 hrs. 775 All of the advantages of a floated wall, plus the reinforcement received from the metal lath. Maximum in values for plaster work on exterior walls of frame buildings. Costs more and worth it 3V Sheetrock Perf-A-Tope Optional! 900 sq. ft. _ | 1 2 hrs. 1 Vi boxes" 10 hrs. Standard wollboard construction applied to exterior walls. Shortens time of completing the building Fully decorable by any means. Use of Perf-A-Tape System seals the joints between adjacent boards' producing a smooth ond jointless appearance. Joints moy also be covered with batten strips or left untreated in the modern manner, j'h" 5heetrock 900 sq. ft. _ 'i i 12 hrs. 1 | Heavier, full ,/z" construction, otherwise identical to IW-10. Provides increased -igiditv and fire protection. ' Pert-A-Tape compmarion oox for 250 I in. ft. of joint. 2602 2 1093 40 YEARS. OF PROGRESS THROUGH RESEAtfrZfl EXTERIOR WALL ASSEMBLIES (Continued) WOOD STUDS INNERFACE Page . Thickness I of Applied : Moferials (In.) i Wt. of Applied Materials , /sq. ft. 50 i 1.5 lbs. Special Characteristics Suggested Decoration ; Type No. Adds beoutv of fine wood grams to incombustible, unit wall construction Self-decorating | IW12 53 Va WEATHERWOOD BUILDING BO 48 /2 - /-'//WEATHERWOOP / TILE / /-FURRING /\\\;:;;u:^: :f^ ',i WEATHER WOOD ZFINISH PIANK. / F URRING I -i -r - r ^INSULATING lM SHEErROOC 48 I'/i 49 1/2 42 Ya '/: INSULATING SHEETHOCK 42 ; /2 1.5 lbs. .75 lbs. .75 lbs. .75 lbs. 1.5 lbs. Deeply pressed tile pattern pro vides close imitation of ceromic tile when enameled Enamel IW1 3 Low cost insulating unit wall construction--textured surface two colors Left m natural color or painted, especially with | Texoiite \ IW1 4 Various sizes for interesting tile patterns. Several colors and textures Self-decorating, i May be painted j 1^15 "Plank" may be varied in width and shade. Ogee edge on long joints Self-decorating. May be painted IW 1 6 Identical with IW10 but provides bright metal foil insulation Texoiite, other and vapor barrier at slight paint or paper additional cost IW17 2o lbs. ' I Adds bright metal foil insulation 1 ond vapor borner to IW1 1 Texoiite, other [ paint or paper j g Ar\ REDTOP INS V BLANKET 60 ! i 2 02. 16 - MED PEDTOP INS BLANKET 60 | Medium 4 02. | 1 60 i Thick 6 oz. UNITED STATES GYPSUM COMPANY Completely inclosed mineral wool blankets with vapor resistive foce. automatically forming air space at inner face of studs, and vapor permeable enclosure at ourer space. Insulation coefficient .27 S.T.U.'s per sq. ft. per inch of thickness per degree difference m temperature (F.). Insulation added to wood stud wall by blanket and both air spaces is: 1 " Blanket.............. . .192 Medium Blanket . . . .112 Thick Blanket .... . .086 Specify sepa- $ rately i NOTES RELATIVE COSTS--The variation m possible combinations of materials makes it impossible to usefully relate costs of the constructions shown. The relative cost column for interior partitions i Pages 6 to 9) will serve if all other conditions are alike. FIRE RESISTANCE--S imilar variations m sheathing, masonrv. etc., and lack of rests make comparisons of fireproofness difficult. The figures given unaer "Inreric Partition Assemblies" <Pages 6 to 9) should be helpful if used with discretion. HEAT INSULATION--Heat loss figures for assemblies of exterior wall materials may be secured by reference to the current "Guide" of the American Societv of Heating and Ventilating Engineers where many of them have been calculated. Those which have not mav oe quickly calculated by following the data and instructions of the "Guide." Material and labor quantities for all plasters will be found on page 47. Quantities of material and labor per 100 sq. yds. of partition, both sides. Materiel Quantity Labor . USE ANALYSIS AND ECONOMICS (All supporting members are cn 16" errs, unless shown otherwise.) Sheetrock Grom Board Sheetrock T.le Bocrd 900 sq. ft. 900 sq. ft. 12 hrs. : Sheetrock Cram Board `see construction PIO page 7' becomes more useful for exterior walls when , backed with bright metal foil insulation which simultaneous^ provides heat insulation eauivalenr to 1 '2 of fibre board plus a most desirable ana efficient vapor barrier on the correct (warm) side for about 1c per sq. ft. more. Insulation integral with the wall finish requires no additional labor for installation. 1 2 hrs. i j For tile-like wainscots or full walls in bathrooms, kitchen, etc. Economical. Easily decorated with ! enamel. ! Weather-wood Bldg. Board For Batten Srrips see - 2, page 3. 900 sq. ft. 4 hrs. > Weatherwood Building Board frequently used m low cost building constructions for partition purposes i is even more desirable on-the inner face of the exterior wail because of the very useful msulofion it i supplies. Quickly installed, it can be erected with or without batten strips. : ; " Weatherwood Tile 1 x2 Furring Strips 900 sq. ft. 680 lin. ft. 8-10 hrs. 4-5 hrs. This construction, of course, duplicates the partition construction of Type P-13, providing identical values, plus the desirable increase m insulation securea, simultaneously, without extra labor. Weatherwood Finish Plank For Furring see 1W 1 5 above. 900 sq. ft. Apolied vertically or Horizontally, this construction adds insulation value to exterior walls and con 8-10 hrs. tinues the other desirables described in the partition section. Furring strips will not be required if the planks are applied horizontally. If they are applied vertically, planks of less than 16" width will require , cross furring on )6" centers. 1 - 3 " Insulating Sheetrock 900 sq. ft. 1 2 hrs. The proper exterior wall where Sheetrock is used. The additional insulation afforded by the bright metal foil provides maximum insulation values considering costs plus a most efficient vaoor barrier without any additional labor expense. Material and labor quantities for treating joints with Perf-ATape are given on page 14 under Type IW-10. : 2' Insulating Sheetrock 900 sq. ft. 1 2 hrs. Identical in type and utilities to IW-17 above, except heavier Sheetrock provides more rugged con struction with added fireproofing value at slight aaditionai cost. Fed Top Ins. Wool Blanket either 1 " Med. cr Thick Well Work II'A hrs. 844 sq. ft. i (Net as soldUCetl. Work applied from : obove | IVl hrs. j j Ceil. Work applied from below | 1 5 hrs. The theoretical heat insulation values aaded to any construction by Red Top Insulating Wool Blankets are shown m the "Special Characteristics" column on the opposite page. The theoretical advantages of insulation are roreiy ootomed m structures unless the insulation is properly designed and installed. Red Top Insulating Wool Blankets offer these im many cases "exclusive") desirables, designed to procure maximum msulative results m actual construction. 1. The insulating wool is firmlv attached to the enclosing envelope. The envelooe, in turn, is firmlv tacked to the supporting wood framework so that the insulation is held in ploce permanently--no sagging or bare spots. 2. Each blanket is uniformly thick throughout its width. There is no "pinching" or reduction m thickness at the edges. 3. More thorough protection against the entry of vapor Ino condensation within wall spaces). 4. Low heat capacity--less heat is retained m the blanket to be fed bock to the house in the summertime. 5- Rapid installation. Completely incombustible wool actually increases the fireproofness of any type of wall or ceiling construction. 6. Harmless to health--odorless--provides no food or nesting material for vermin. 7. Three thicknesses--which fit the needs of any climate or pocketbook. 8. More effective insulation per dollar spent. *602 2T0SS i .40 YEARS OF PROGRESS THROUGH RESEARC.I cbs O EXTERIOR WALL ASSEMBLIES (Continued) $ INNER FACE -- Masonry Page fromVace I of, j Special of Masonry 1 , . ,, , .. .. installed to Finished / ft. 1 Charoctensfics i Face (in.) it Suggested Decoration i ! i ! 22 1 7/s 32 : ' 1 6.5 lbs. j i 1 1 Best reasonobly priced method of ! finishing interior of masonry | wall with plaster i j | }T , 1 ex ' e' 0 er | pa,nt or poper i 22 1 Va 32 6.5 lbs. Adds reflective insulation and effective vapor barrier to IWI9 Texolite, other paint or paper ! , Type i No. 1 1 IW19 : i j |W20 i ! 58 2 32 5.7 lbs. Adds standard insulation at small cost : I Texolite, other I paint of paper i 1 ; |yy2l 24 j 1 Vi 32 I 24 1 Vi 32 8.0 lbs. | 7.5 lbs. 42 1 % 1.5 lbs. 42 ! I Vi ! I 2.0 lbs. ! Better resistance to crack producing distortions Texolite, other ; |W92 j paint or paper 1 Stiffening effect of Z-Rib reduces plaster quantities. On furring strips, rhis "unit" woll construction reduces completion time. Can be finished to simulate plaster at costs about the same or greater than plaster I | Texolite, other j paint or paper I , IWZ3 | T__ _ j ^ | pp ' IW24 i 1 j ' i | j Adds strength, fire protection at slight costs to IW24 Texolite, other | point or paper 1 ,w-e HCTT 9 5 00 42 | i% I 48 I Vz 48! i% j 48 1 '/2 1.5 lbs. Adds reflective insulation of bright metal foil to IW24 iTexolite, other 1 paint or poper .75 lbs. .75 lbs. J . K2 lbs- .75 lbs. Low cost insulative unit wall construction Self-decorating. May be painted, especially with Texolite , j |w_7 j : . ; ` Decorotive ond insulative tiles in many sizes for many patterns Self-decorating. * May be painted, j! especially with Texolite , 1 Heavier, stronger, more insulative 1 than IW28 ! Self-decorating. May be painted, especially with Texolite IW28 IW29 f J Interesting biend of colors. "Plonk1' wiarh may be varied ! Self-decorating. May be pamtea, ! especially wirh i Texolite T n, -3 IW30' n'TOflS NOTES RELATIVE COSTS--The variation m possible combinations of materials makes it impossible to usefully relate costs of the constructions shown. The relative cost column for interior partitions 'Pages 6 to 91 will serve if all other conditions are alike. FIRE RESISTANCE--Similar variations in sheathing, masonrv, etc., and lack of tests make comparisons of fireproofness difficult. The figures given under "Interior Partition Assemblies" (Pages 6 to 9) should be helpful if used with discretion. HEAT INSULATION--Heat loss figures for assemblies of exterior wall materials may be secured by reference to the current "Guide" of the American Society of Heating and Ventilating Engineers where many of them have been calculated. Those which have nor may be quickly calculated by following the data and instructions of the "Guide." Material and labor quantities for all plasters will be found on page 47. Quantifies of material and labor per 100 sq. yds. of partition, both sides. Material Quantity Labor USE ANALYSIS AND ECONOMICS (All supporting members are on 16" ctrs. unless shown otherwise.) Wood Furring Rocklath 680 ft. 900 ft. 4-5 hrs. 6-7 hrs. Stondord furred construction properly safeguards plaster and lath ogoinst moisture difficulties, stops efflorescence from masonry appearing on inner plastered wall. Preventing further difficulties with paint and other types of decoration. Adds useful insulation at no cost. Wood Furring Ins. Rocklath 680 ft. 900 ft. 4-5 hrs. 6-7 hrs. Wood Furring Weather- wood Forplcster 680 ft. I 900 sq. ft. see page 47. Wood Furring Metal Lath For plaster see page 47. 680 ft. I 05 sq. yds. Wood Furring 680 ft. Z-Rib Metal Lath 105 sq. yds. For plaster see page 47. 4-5 hrs. 6-8 hrs. 8 hrs. 4-5 hrs. 8 hrs. Wood Furring :s" Sheetrock 680 ft. 900 sq. ft. 4-5 hrs. I 2 hrs. Insulating Rocklath adds a plus value to construction IW-19 m additional useful insulation at a cost of approximately 1c per sq. ft. Since the insulation is installed integrally with the Rocklath there is no expense for its installation. The effective vapor barrier of the metal foil on the Rocklath minimizes the possibility of deleterious condensation in the air space or within the masonry as entrance of vapor which could condense is restrained. Supplies effective insulation of popular insulation board integrally with the plaster base at no cost for installation of the insulation. Additional cost for the material averages l^c per sq. ft. above Rock lath cost. Adds resistance to cracks because of steel reinforcement. Increased fire protection. A superior con struction for the better class building. Z-Rib Metal Lath of equal weight slightly more expensive than small Diamond Mesh but saves suffi cient plaster to offset difference. See same construction under Interior Partition Assemblies for more complete analysis and comparison with Diamond Mesh Lath construction. Standard wallboard construction on the interior of masonry walls for almost 20 years. Air space back of Sheetrock produces insulation value and prevents difficulties from efflorescence from masonry. Either paint or wallpaper may be applied to the construction. Insulating Sheetrock IIW-6) may be substituted for slight increase m material cost. Wood Furring 12 " Sheetrock 680 ft. 900 sq. ft. 4-5 hrs. j The use of Vi" Sheetrock adds additional fire protection, rigidity and ruggedness at a slight increase I 2 hrs. I in cost. Wood Furring ins. Sheet*'ock '.Vood Furring 1 '2" Weatherwood Building Board 680 ft. 900 sq. ft. 630 ft. 900 sq. ft. Wood Furring 1 2" Weatherwood Tile 680 ft. 900 sq. ft. 12 hrs. i j Adds the value of reflective insulation as in construction IW-20 above at a similar increase in cost | with no expense for installation labor. 4-5 hrs. 8 hrs. j Lowest cost method of properly finishing the interior of a masonry wall. Weafherwood building board may be exposed as it comes to the job or painted. The |Oints between adjacent units may be covered with batten strips or left frankly exposed. Material and labor quantities for rhe batten strips will . be found on page 9 in the partition section. 4-5 hrs. Adds definite decorative effect to construction IW-27 at a slight increase in price. Soacing of furring strips designed for use of 16" tile. 12" tile will require furring spaced on 12' centers, for cost of 8- 1 0 hrs. ; which see page 9 in rhe partition section. Wood Furring 3V' Weatherwood Tile 680 lin. ft. 900 sq. ft. 4-5 hrs. 7-9 hrs. , , Thicker construction, increased insulation and greater freedom in decorative design because of the variety of sizes available. Readily fits standard trim used for lath and piaster. i Wood "erring t ' Weother- Lvood Plank ! 580 lin. ft. 900 sq. ft. ! I -i-5 hrs. ; 3- i J hrs. Wall must be cross furred, placing furring- parallel to floor, if Weafherwood plank is installed with long edges vertical. Use vertically cooked furring if planks ore to be applied horizontally, shows ail of the economy and beaurv at partition construction P--1, plus useful insulation for exrerior wail -se. `;OT Ei The practice of applying piaster -direct to the inner face of masonrv exterior wails, wmle common m some parts of rhe country, generally considered cs good prcctice unless mcsonrv 'S known to be water-tight ana well laid on fully bedded mortar joints. WUI'f 3 ....'WWW 11 mm..-------- IQ V io n "z lo ffc EXTERIOR WALL ASSEMBLIES (Continued) OUTER FACE -- Wood Studs Page ' Thickness i of Applied Materials ilnJ 44 J 1 Wt. of Applied Motenals /sq. ft. ! Special ; Characteristics j ; Suggested Decoration j Fireproof, strong sheathing. Tight joints, no knots. Does not require 3 lbs. 1 building paper. Installed costs Point j less than wood Type [ No. 1 i i I ' EW4 ; ' 44 | 24 40 : I'/j I I H,, ' ;-i f Nailex . Fasteners are ! used--see ! page 67) 58 1 , ( j 14 lbs. With gypsum plaster on Rocklath or metal lath for interior foce, | this construction provides maxi- Self-decorating mum fire protection in stud 1 exterior walls 1 < ! : EW5 ! 3.8 lbs. 1 I, ] All advantages of EW4 plus ] incombustible siding Self-decorating j j : EW6 i 1.8 lbs. i Adds standard insulation. Tongued j and grooved long iomts plus . asphalt coating eliminate need for Paint building paper ! 1 1 | jEW7 j 58 , 24 40 11/, 12.8 lbs. j Insulative sheathing plus maxi! mum sfucco |Ob. Building poper j not needed. j | Self-decorating [ j ! EW8 j ' - l-l-f ( l-i- .f 58 Nailex 66 Fasteners are used--see page 67) 2.6 lbs Insulative sheathing plus advan tages of asbestos siding (See W3). No roofing felt required under siding jSelf-decorating EW9 ' * OUTER FACE --Masonry Thickness from Support ro Finish Face (In.) , W(, of : Inner face ; Installed j /sq.ft. j i Special j Characteristics Suggested Decoration Type No. 40 Low cost stucco with all advan 40 12 lbs. tages of mill-mixed product Self-decorating ! EW1 24 40 2 66 liV 12 lbs. i ! Best stucco construction. Uniform- 1 lfY ond permanence of mill-mixed j product Self-decorating W2 i j - 1.8 lbs. j 1 Beauty of wood gram and color with permanence and low upkeep of asoesros cement j* Self-decorating EW3 1t UNITED STATES GYPSUM COMPANY  NOTES RELATIVE COSTS--The variation in possible combinations of materials makes if impossible to usefully relate costs of the constructions shown. The relative cost column for interior partitions (Pages 6 to 9) will serve if ail other conditions are alike. FIRE RESISTANCE---Similar variations m sheathing, masonry, etc., and lack of tests make comparisons of fireproofness difficult. The figures given unaer Interior Partition Assemblies" `Pages 6 to 9) should be helpful if used with discretion. HEAT INSULATION--Heat loss figures for assemblies of exterior wail materials may be secured by reference to the current "Guide" of the American Society of Heating and Ventilating Engineers where many of them have been calculated. Those which have not may be quickly calculated by following the data and msrrucrions of the 'Guiae." Material and labor quantifies all plasters will be found on page 47. Quantities of material and tabor per 100 sq. yds. of partition, both sides. Material Quantity Labor USE ANALYSIS AND ECONOMICS (All supporting members are on 16" ctrs. unless shown otherwise.) Cyplap 1 900 sq. ft. 6-7 hrs. Stronger rhon horizontally applied wood shiplap isee page 451. Costs less to buy and less to apply than wood sheothing. Adds a full '.2" of incombustible fireproof material and increases protection against fires which originate from without the building. Tongued ond grooved edges of Cyplap f 1 r snugly. Cyplap contains no knot holes or wood shakes, aoes nor rot, worp or exude resinous materials; completely odorless and vermin-proof. Cyplap Sfucco Mesh Oriental Stucco see poge 47. : 900 sq. ft. 6-7 hrs ! 1 05 sq. yds. 12-14 hrs Essentiolly a fireproof construction tor wood stud walls achieved at relatively low cost. All of the economies of Cyplap over combustible constructions are utilized, plus the well known strength, quality, color and texture 'see page 40) of Oriental Exterior Stucco. Mill mixed. Oriental colors do not streak. Properly applied, do not show joinings between successive applications. Water resistive. Mixed with mineral colors which do not fade and which are nor affected by the cementitious materials in the stucco itself. Becomes stronger and more woter resistant with age. Cyplap Wood Furring ' 1 6"centersl USC Asb.-Cem. Siding 900 sq. ft. 680 lm. ft. 9 squares 6-7 hrs. 4 hrs. 1 8-36 hrs. This standard construction reauires furring strips on which to nail the asbestos-cement siding. Using "Nailex Fasteners" (page 67) the furring strips are omitted, less nails and but 14 to 20 man hours of labor are required. Weather wood Asphalt Coated Sheathing 900 sq. ft. 6-8 hrs. Weafherwood asphalt coated sheathing supplies structural bracing ability as well as heat insulation. Wafer repellent asphalt coating and tongued and grooved long joints (vertical joints made over stud ding). Eliminates building paper unless lending agenev regulations demand it. Use of building paper over Weafherwood does not seriously affect costs. Weather- . wood Sheathing 900 sq. ft. Asoestos Stucco Mesh i 105 sq. yds. 6-8 hrs. 12-14 hrs. Integral insulation applied in sheathing simultaneously for no additional labor cost. The advantages of Oriental Stucco previously mentioned, reinforced with metal. `See construction EW-3 above.) Wearhervood Sheathing Wood Furring USC Asb.-Cem. Siding 900 sq. ft. 680 lin. ft. 9 squares 6-8 hrs. 4 hrs. 18-36 hrs. The alternative construction mentioned in EW-6 which eliminates wood furring is as applicable here as it is with Cyplap. Its use results m a similar saving over the construction shown here. Nailex Fasteners hold the shingles verv nghtlv to the sheathing. The resilient nature of Weafherwood pro vides a cushioning effect resisting ratrling tendencies. Orientol Ex [ Quantity and labor fig terior Bose ; ures for Oriental Base Coat & Oriental j Coat and Stucco on Stucco 1 page 47. Hundreds of buildings receive Exterior Stucco coots direct on terra cotta file, hollow brick, common brick and sufficiently porous types of stone mosonrv. Direct application of stucco base coat to mosonrv by proper mechanics can be considered os standard construction and one providing definite economy. Wood : Furring ( 680 lin.ft. 1 1 6" centers) ! Stucco Mesh 105 sq. yds. for Exterior : Stucco costs see page 47. 4 hrs. 12-14 hrs. A superior construction to EW-1 at the additional cost for furring and stucco mesh. Provides insulation of air spoce between stucco base coat and masonry, resulting m increased resistance to efflorescence difficulties on stucco and definite reductions in the woter hazard in the masonry. All of the well known advantages of a fine mill mixed stucco are attained in the Oriental Stucco finish. Wood :urrmg JSC Asbestos -ement Siding | 680 lin. ft. ! 9 sqs. 4 hrs. 1 3-36 hrs. A simple, low cost method of getting the effect of wood siding on either all or selected exterior masonry walls and attaining the permanence and fireproofness of completely incombustible materials throughout. USC Clatex Asbestos Cement Siding protects against discoloration and accumulations of dirt, providing a surface wmch can be readily washed when desired simply and at low cost w.rh fuli restoration of its original beauty. 8602 sioaa UaS rocklath Gypsum boards with o tough, fibrous covering, 16 x 32 and 16 x 48 in., % in. thick. Readily nailed to construction. Bond perfectly with gypsum plaster. PLAIN ROCKLATH Rocklath* does not bum or readily trcnsmit high temperatures and when plastered with gypsum plasters is fireproof. It contains noth ing to disintegrate or corrode -- no pitcn, resin or gum ro stain the piaster. The uniform suction of Rocklath prevents plaster from slipping during application and insures a uniform bond. U. S. Burecu cf Standards tests show that an 864 lbs. per sq. ft. pull was required to separote plaster from gypsum lath--a safety factor of 144 Rocklath >s easily erected. A bundle of boords (32 sq. ft.) is easily carried by one man. There are no rough edges or splinters. One piece covers the same orea os 9 wood loth and reauires half the nails. Boards score and cut without waste. It is not necessary to wet Rocklath before plastering. Rocklath keeps the moisture of fresh piaster from the frame, which prevents swelling of wood members. Walls and ceilings dry quickly. Walls of Rocklath and gypsum plaster cost less than metal lath and plaster, and little, if any, mere than wood lath and plaster. Sizes--16x32 in. and 16x48 in., 3/s in. and V2 in. thick. PERFORATED ROCKLATH By perforating Plain Rocklath at regular intervals, applied plas ter is mechanically keyed as well as bonded to the lath. The persistence of this "dual" bond under fire exposure increases the fire rating of wood stud partitions made with Perforated Rocklath and gypsum plaster. It is cut, fitted, and applied ex actly like and has all the speed and economy of Plcin Rocklath. ONE HOUR FIRE RATING At the conclusion of tests conducted in accordance with the American Standards Association fire Test Specification, a Per forated Rocklath partition was shown to have qualified for a onehour fire rating. After the fire test, the wall successfully withstood a standard hose stream with a considerable margin of safety. This achievement makes it possible to construct bearing par titions of wood studs, Perforated Rocklath and Sanded Gypsum Ploster. providing real fire protection for frame buildings at costs comparable to those of combustible designs. INSULATING ROCKLATH Fully 75 3 of the heat lost from or entering buildings is radiant heat. Bright metal foil is both a highly efficient reflector and at the same time a poor radiator of radiant heat. Insulating Rocklath is made by permanently attaching a sheet of bright metal foil to the back of Plain Rockloth during manu facture. When applied with an air space of not less than 3<i in. next to the foil, Insulating Rocklath offers thermal insulation equivalent to that of Vi in. fiber insulation board. The metal foil provides a highly efficient vapor barrier (on the warm side where one is needed! to control condensation. 5ij--Same as Plain Rocklath above. Applied like Plain Rocklath. PACKAGING : -3x15x32 n in bundles of 6 pieces, covering 21 '/i sq. ft. J'sx 16x48 in. m bundles of 6 pieces, covering 32 sq. ft. UNITED-. STATES; GYPSUM COMPANY "Reg. Trade Mark APPLYING ROCKLATH NAILED ON See Also USG Resilient System, Page 16 Cutting Specifications--See page 35. Nail Spacing and Joint Locations Ready for Plastormg Scale of All Defails On This Page: ,/j" = 1'0" BRIDJOINT METHOD (Nailed and Clipped On) In the Bridjoint method, the short ends of each piece of Rockloth meet in the area between the studs or joists end not over the studs. W-22 Bridjoint* Clips are used to attach .the loose'ends to the Rocklafh immediately above and below the joint; otherwise, ecch piece of Rocklafh is nailed with five nails in each support in the regular manner. Rocklafh is not nailed to frame in corners. W-33 clip holds the boards together. At ceiling and wall angles two nails are used per board, per stud--see section at right. Right--Position of Noils. Clips and Joints Far Right--Clips and Wall-Ceiling Joint r 5" 3` Specifications Ail Rockloth is to be applied to the framework by the Bridjoint method, using W-22 clips in the field and W-33 clips at all angles. Five nails are driven into every stud each Rocklafh unit crosses, except on boards at ceiling and wall angles. Here only two nails are used per stud and these are kept as far away from the angle as possible. FREFLOTE METHOD (Clipped On) In the Freflote method, Freflote* Clips (No. 63 l take the place of the nails used m the Bridioint method to fix the Rocklafh to the construction. There are. then, less nails to drive and the swiveled clips permit considerable mo tion m the framework without putting strains on the lath or plaster. At all corners and angles the lath are not ottached to the framework in any wov but are neld to each other by W-33 clips os in the Bridjoint method above. Right--Position of Clips and Joints Far Right--No. 63 Clip Specifications All Rockiarh is to be applied by the Freflote Bridjoint method, using Freflote Clip No. 63 to attach boora to framework in the field and Bridjoint Clip W-22 to attach the short ends of every board, which must not oe placed over the studs, to the abutting boards above ond below the joint. APPLICATION METHODS COMPARED (1) Nailed On--The standard practice. On average jobs better than wood lath, usually costs as little or less, when plastered. (2) Bridjoint--Reduces cracking caused by bulging or warped studding and joist movements; less tendency to crack at corners. Cost--same as or slightly more than the above. (3) Freflote-----Fully clipped on with swiveling clips: provides air circulation between supports and lath; increased sound insulation of from eight to ten decibels over ' 1 ) and 2). Clips provide plaster grounds on ceilings, insuring full blaster coats; save noils and labor of application. Generally some what more expensive than ( I ) and (2). 14) Resilient System--(See page 251--Fully floated walls which permit maximum frame movement without ploster cracking for both ceilings and walls. Maximum sound insu lation. Cost--about 25 per cent more than standerd nailed on |ob. *Reg. Trciit: Mark 40 YEARS OF PROGRESS THROUGH RESEARCH BB012 2100 U0S METAL LATH We manufacture metal lath in all typfes and weights in standard and special metals, and a full line of metal lath accessories, far quick national distribution. DIAMOND MESH LATH--Small mesh (5/16 in. x 9/16 in.) facilitates application and reduces mortar waste through droppings. Provides perfect key. Also made in self-furring or corrugated types. Vi-IN, Z-RIB LATH--Unique "Z" type ribs (Vs in. deep x 1 '/2 in. o.c.) odd rigidity. Provide shelves to hold wet plosrer, front and back, without waste. 4-mh Z-RIB LATH--Companion product to Zs-<n. ZRib Lath, but has smaller mesh opening and comes in 27-in. width. UNITED STATES GYPSUM company EXPANDED STUCCOMESH-- Diagonal strands provide distribution of steel to overcome initial shrinkage, tem perature changes, wind stress-protection against unusual shocks. * DIAMOND MESH LATH Sheet- Size: 27x96 in. 24x96 in. Type of .. . 1 : Weight in Lbs. .. , pot Sq. Yd. i Max. Span*5 '< Heaviest ' lath, wood construction'1 Rel. costt 1 ' , . ., Recommended Uses | Open heorth steel, painted black Copper Peering steel, pointed block Cut from golvomzed sheets Armco Ingot Iron, painted black 2.2, 2.5, 3.0, 3.4 2.2tt, 2.5+t, 3.0. 3.4 2.5, 3.4 2.5ft, 3.0** 3 J ! I Ceilma 16 m. Wail 16 in. 1 , All-purpose lath for plain and ornomenta` plastering. /e-IN. z-rib lath Shcet'Size: 24x96 in. 4-mesh Z-RIB LATH Sheet Size: 27x96 in. >/s-IN. RIB LATH Sheet Size: 24x96 in. Open heorth steel, pamted block 2.75,3.0,3.4 Cooper beoring steel. pointed black , 3-OtT, 3.4 Cut from galvanized sheers 3.4 Armco Ingot Iron, pointed black 3.4tf Open hearth steel, painted black . 2.75, 3.0, 3.4 Copper bearing steel. pointed black 1 3.0tt, 3.4 Cut from galvanized sheets 3.4 Armco Ingot Iron, pointed black ; 3.4*t Open hearth steel. painted black 3.0, 3.4, 4.0 Copper bearing steel, i pointed block 1 3.0**, 3.4, 4.0TT Cut from galvanized 1 sheets Armco Ingot Iron, t 3.4, 4.0tt ! pointed black 1 3.4, 4.Off Ceiling, 19 m. Wall, 19 in. !1 For nailing on wood construe fion or tying on metal furring Ceiling, 19 in. Wall, 19 in. ,1 Especially adaptable for tile backing ^4 I* * ** ^ .* * Ceiling, 19 in. Wall, j 19 in. ^ II , l , : . For floor and ceiling construe tion with steel joists; ceilings under steel tile construction, and where wide soacing of supports is necessory , * '/4-IN. rib lath Sheet Size: 24 in. wide x 8. 10,12 ft. Open heorth steel, pamred block .50, .60, .7 5 Copper beoring steel, _ pointed block .50ft, .60ft, .7 5"t Cut from galvanized _ (Figures for: sheets j .50tt 3/," rib lath ! pAarmmcteoaInbglaoctkIron, j, .75t+ p' ermsiqbs.f.t.) I ; Since uses aernet dfrioffmer- j IV For centering and remforcement of concrete roofs and floors; plaster partitions and ceilings on extremely wide spacing of supports; special work; columns, balconies, etc. . EXPANDED STUCCOMESH Sheet Size: 48x99 in. ' Ooen hearth steel, painted black ; Copper bearing steel, : pamted block j Cut from galvanized i sheets j I 1.8, 3.6 1.8, 3.6 1.8tt, 3.6tt i|i soon figures nor : ` 111 1i applicable i 1 ,| i Base reinforcement for exterior stucco Moximum soon of maximum weight. Based on wood construction. t'T' equals least expensive; "II" equals more expensive, etc. ftMode especially to order. PACKAGING: Dia. Mesh, Z-Rib and Vs in. Rib: ten 27x96 in. sheets (20 sq. yds.) per bundle, and nine 24x96 in. sheets (16 sq. yds.) per bundle; 3/i m. Rib: nine sheets 24 in..x 8 ft., 10 ft., or 12 ft. long per bundle. Stuccomesh: ten 48x99 in. sheets (36^3 sq. yds.) per bundle. METAL LATH ACCESSORIES BB012 2102 40 YEARS OF PROGRESS THROUGH- RESEARCH- tbS RESIDENT PLASTERING SYSTEM USG Resilient Clips float standard plastering assemblies to framework---steel, masonry, wood--obviating many disadvantages of older constructions. LESS STREAKING Unequal condensation causes the charac teristic streaking of plastered wails and ceilings. The condensation is greater where the piaster contacts the supporting frome members. USG Resilient Clips hold the plaster away from the framework permitting al most complete equalization of the con densation. Streaking is thus practically eliminated. ' t7 SOUND INSULATION Sound striking rigid walls sets up vibra tions whicn are transferred to framing members and earned to adjacent rooms. I With the USG Resilient Systems a cushion ing barrier is thrown in the path of the sound. A Rocklath Resilient partition, built ac cording to test specifications of the A. S. A., showed a sound reduction of 51.9 decibels. This is at least equal to two 3-in. tile partitions with 1-in. air space, an ac cepted satisfactory soundproofing con struction. "FLOATED" Plaster cracking due to normal frame movement is greatly reduced with the USG Resilient Plastering Systems. When frame movement occurs, it is absorbed by the dips much os road shocks are absorbed by outomobile springs. The flexibility of these systems replaces the rigidity of ordinory plastered con structions without sacrificing strength. Spiafications--All walls land/or) ceil ings are to be installed by means of USG Resilient Plastering System Clips following the directions for installation furnished by the manufacturer. UNITED STATES GYPSUM COMPANY CEILING FOR ROCKLATH WOOD CONSTRUCTION _________________________ ^-PLASTER tsszsssssssssSi S2SSS22222S LROCKLATH NO i -W RESILIENT----- -VflJl OUIPS X m -WOOD STUD t/Lii. ^ P kKW.fV/^ZTj STEEL CONSTRUCTION PLASTER, ROCKLATH NO.6 CUPS STEEL STUO'^Lt^)'' F '.''/yyyyyy MASONRY CONSTRUCTION ire^xyoogiaccjj j X NO 2 ROCKLATH VCLIP '-PLASTER NO 600 STUOil SAR JOIST, 'I NO.5 ROCKLATH CLIP STSF\JRR1NG channel" 3 N0.6_ROCKLATH CLIP C0RNER1TE FOR METAL LATH WOOD CONSTRUCTION NO. 200 CUP STEEL CONSTRUCTION MASONRY CONSTRUCTION MO 500 CLIP- VV FURRING CHANNELS WIRED TO CUPT. * -fcS. i__ PLASTER^ Blaster ^hanger wire ' - I yi C M A N N E L no ioo clip 1L' CHANNEL =1METAV^aIH WIRED TO FURRING CHANNEL-- J 40 YEARS OF PROGRESS THROUGH RESEARCH ' ~40 *-J0S TRUl iTI EL STUDS USG T tically > uds permit enclosure of pipes, conduits, air ducts, both ver tottally, within the finished wall. ADVANTAGES Ducts, conduits and pi during construction or Ducts may be as large flanges--see sizes bel> USC Trussteel Stud: in weight--a fully pi '3'/a") partition wei sauore foot. Dead loc bers is less than with With gypsum plos fire-resistant portitioi rating is provided. Attachment shoes tial attachment and ment over actuol ceiling heights, wiring or cri is equally stalled StJy cut con- hey are irn stub nails. Sits are required, in. apart, are in the for tieing metal lath at These also provide a convenient stud spacing. in the web of the runner track facili tate tieing track to metal lath ceiling. Because USG Trussteel Studs provide a rigid support for the metal plaster base, plosfering is as eosy as with the usual metal lath job. The type of lath to be used de pends upon the stud spacing. STRENGTH TESTS Results of tests conducted by the Raymond G. Osborne Laboratories, Los Angeles, during November 1937 proved that USG Trussteel Studs had more than adequate strength for building construction practices and were accordingly granted approval for use unaer the Pacific Coast Uniform Building Code requirements. Tests conducted by the USG Laboratories in December 1939 indicated USG Trussteel Studs to be far stronger than punched channel studs at the failure point, and a negligible difference at the first piaster crack point. SIZES USG Trussteel Studs ore made in lengths from 7 ft. to 20 ft., inclusive, in increments of 3 inches. Lengths of from 14 to 20 ft. ere supplied .in two sections, complete with splicing feature. These are the stock or "fixed" lengths. The adjustable feature on each of these lengths permits adjustment to 4 inches over the stock length. Widths are 2, 3. 3 Va, 4 and 6 in. Runner frocks are made m 8 ft. 2 in. lengths. because there ere only 3 simple ele ments. Quctj and Conduits--Deduct 3,3 in. from nominal width of stud for maximum duct size partition will accommodote. ENGINEERING DATA Stud Spacings--The following types and weights of metal lath are recommended for various stud spaemgs: Type and Weighr cf Red Top Metal Lath 2.5 lb. Diamond Mesh 3.0 lb. Diamond Mesn 3.4 lb. Diamond Mesh 2.75 lb. Vs" Z-Rib Loth 3.0 !b. Ka" 2-Rib Lcrh 3.4 lb. /a" 2-Rib Lath 3.0 lb. e" Rib Lath 3.4 lb. Va" Rib Lath 4.0 lb. Ve" Rib Lath Recommended Trussteel Stud Spacing 12 inches 1 3 Vi inches 16 inches 16 inches 16 inches 19 inches 24 inches 3 I Vi inches 3 1 Vi inches Length Limits--Maximum ceiling heights recommended for various size Trussteel Studs are 2-in. Stud, 10 ft.; 3 and 3Vi-m. Studs, 16 ft.; 4-in. Stud, 18 ft., and 6-in. Stud, 20 ft. Studs exceeding i 2 ft. in length should also be braced horizon tally with a 36-in. channel at 4 to 6 ft. vertical intervals, to give the partitions lateral strength. Finished Wall Thickness--Based on plastering to a 34-in. ground measured from face of stud, USG Trussteel Stud walls will finish to the following out-to-out wall thicknesses: 2 -in. Trussteel Stua.............................. 3Vi-'n. Finished Thickness 3 -in. Trussteel Stud.............................. 4!/2-in. Finished Thickness 3Vi-in. Trussteel Stud..............................43,4-m. Finished Thickness 4 -in. Trussteel Stud..............................5 '/2-in. Finished Thickness 6 -in. Trussteel Stud.............................. 7 Vi-in. Finished Thickness Millwork should be oraerea to fir the above wall thicknesses. SPECIFICATIONS Materials--USG Trussteel Studs, Runner Tracks and Attachment Shoes of size shown on drawings. 28 Method--Fasten Runner Tracks to concrete with 'A-in. stub noils; wire to suspended ceilings every 16 in. Align Runner Tracks accurately. Space studs 16 in. o.c. !rib lath), 12 in. o.c. idiomond mesh lath) ; festen each stud to Runner Track with two Attachment Shoes at both top and bottom, ecch wired or crimped to stud. Partitions I 2 ft. 0 in. or more in height to be braced by row of horizontally applied 34-in. channels wired across studs. Rows of bracing to be not over 6 ft. 0 in. on centers. Where Trussteel Stud Partitions abut other constructions, noil or toggle bolt o Runner Track vertically to the wall at each abut ment. All comers and intersections of Partitions to be formed with four Trussteel Studs. --h -i U NI TED STATES GYPSUM COMPANY CONSTRUCTION DETAILS 29 40 YEARS OF PROGRESS THROUGH RESEARCH* BB012 2106 U,sS GYPSUM PLASTERS ADVANTAGES Time Soring Quick, positive set coupled with rapid drying saves time. Buildings can be decorated and oc cupied quickly. Fireproof Cypsum plasters provide fire protection at no additional cost. Adaptable to Decoration Cypsum plasters are adaptable to decoration with any material ordinarily used on plastered surfaces. mtorm Laboratory control insures that plasters manu factured at all USC mills will produce like results. Applicable Work with equal facility on any type of lathing material. Plasticity and slip ease the plasterer's {Ob- ./ ' Comply with Standards All USC plasters comply with standards of the American Society for Testing Materials. Federal Departments and construction agencies. ' GYPSUM % FIREPROOF Gypsum is o sedimentory rock, technically, "hydrous calcium sulphate." When found in proper purity it is quarried or mined, crushed, ground and calcined (partially dehydrated) to produce a cement. Its time of set is controllable between wide limits through the use of chemical accelerators and retorders. Special processes developed through long research have created a series of wall plasters made of gypsum which will consistently answer every building need; available in like quality everywhere. Gypsum plaster sonded according to standard specifications in standard thickness, provides a full hour fire rating for wood stud partitions when applied on gypsum Rocklath (perforated) or metal lath. Gypsum plastering has long served as a real fire protection for frame buildings. FINISHING MATERIALS GYPSITE Gypsite is an eroded form of gypsum, containing small amounts of clay or similar erosion products. Quarried like gypsum, it is the source of the "Gypsite" or "Dark" plasters of the Southwest. Bose coats and finishes made of Gypsite vary in color from red dish yellow through pink shades to almost white. Gypsite plasters are fully acceptable for the best work but carry slightly less sand for equal strength and hardness. Finishing materials are available "ready-mixed1' or finishing lime and gauging piaster may be job mixed to produce any type of finish from the hard, smooth trowel finish through sand float fin ishes in various degrees of surface sanding to the deep texture surfaces in white or color obtainable with Oriental Interior Finishes. FINISHING LIMES PLASTERING' Good plastering involves good lath and three coots of properly specified plaster. The scratch or first coat is followed by the brown or second--straightening coat--which brings the face of the woll or ceiling to its final position. The brown coat may carry increased sand--3 parts to 1 (by weight) without loss of strength or fireproofness. The final finish coat is hard, dense, thin and self-decorating, or can be decorated with Texolite (see page seventy-two) wnen dry withour danger of difficulty from damp ness or lime in the finish coat. Finishing limes ore manufactured in three types and from two sources of raw materials. Raw or quicklime usually requires care ful and longer soaking to secure complete hydration. Hydrated lime has been fully or partially hydrated before shipment--it soaks quickly into a useful putty. Pressure hydration- (a new process) permits practically complete hydration of all of the oxides in limes containing magnesium. In older hydration meth ods, the magnesium oxide did not hydrate during the mill hydra tion process but hydrated slowly on the job, occasionally producing difficulty due to the expansion which followed. With USG pressure hydration, over 92% of the lime is fully hydrated. Finishing limes are produced both from high calcium deposits of limestone, containing at least 93% of calcium carbonate, and from dolomite limesrone, containing additions of nor over 45% of magnesium carbonate. ^ . UNITED- STATES GYPSUM COMPANY FINISHING LIMES (Continued) COVERAGE- The choice between quicklime and hydrated lime, made from dolomite or high calcium stone, should be governed largely by the local practices of plasterers in the vicinity in which a building is to be built. All types will produce accept able finishes in the hands of properly experienced mechanics. GAUGING PLASTERS The covering capacity of USG plasters is as great for each type of material as it is possible to obtain. The area cf wall which can be produced by a given quantity of plaster varies with the following factors: The mechanic, the thickness of the wall, the kind and trueness of the surface to be plcstered, the size and number of keys in the lath, the quality of the sand, the amount of sand used, etc. The covering capacities given in the table for each variety of plaster are based on overoge conditions and are quite conservative. Gauging Plasters are made solely for admixture to lime putty to secure hard trowel finishes. They lend greater strength and density to finish plaster and are ground to the correct particle size for quick assimilation and even dispersion through the putty that must be accomplished if a prime finish is to result. Available in white (at slightly higher prices in some locali ties) or light shades local to producing mill in either quick set or slow set types. KEENE'S CEMENT Keene's Cement is o very hard, slow setting, dense cement, made from gypsum rock of great purity and whiteness, found at only a few places in the United States. Unlike other hydraulic cements. Keene's Cement may be retempered. Its slow setting property permits scoring the plaster finish to create masonry joints in the surface. Plaster finishes made with fine Keene's Cement are stone-like in character and appearance. They may be polished to a gloss as high as that given marble. Keene's Cement is an excellent material to use in the production of colored interior finishes and for imi tations of Travertine and Caenstone. 8y variations in grind ing and mill treatment it has been possible to produce several special types of Keene's Cement, particularly adapted for special purposes. ARIDIZE* MOULDING PLASTER Aridize Moulding Plaster moy be used for both "run** moulds or cost ornament. Particularly smooth working and of uni form setting quality, Aridize Moulding Plaster is ground much finer than other similar products, assuring more thorough solution and finer surfoce of the finished work. Its cooler working and slower setting qualities account for low expan sion and the absence of warped moulds. Slow generation of heat in setting protects gelotin or glue moulds from quick deterioration. Slow setting gives time for blending and work ing out entrapped air bubbles and for working the plaster into angles and corners of moulds. Even when green, moulds of Aridize hove great strength. Breakage in handling and manipulation in the moulding and casting stoges is reduced. Aridize Moulding Plaster is sold under the following trade names in different localities: Red Top (local color), Red Top No. 1 (white), Red Top Kings Diamond (white). Golden Seal (white). BLOCKSET CEMENT Type I Purpose Brand Type No. Standard Keene's Cement 1 Used with small amounts I of lime putty for the pro duction of hard, white 1 finishes. Red Top Keene's Cement K-l Casting Keene's 1 For casting applied oma- Red Top \ ment; sets m about 2 Casting | hours. Keene's K-2 Blockset Cement is specially designed for preparing mortar for setting interior partitions of clay tile or gypsum tile. Blockset Cement sanded with three parts of sand by weight to one part cement on the |ob provides o mortar with definite set, fine bedding qualities, and amply strong for any non-bearing partirion work at a low price. Its use speeds constructions, maintains the high quality of fire protection of Pyrobar Cypsum Tile (see pages 54 and 55) and should be the mortar reauired m every specification involving the use of clay or gypsum partitions and fireproofing. B B 0 1 2 2 1 OB Scoglioia : For imitation marble slobs , and columns in color and ' veming by the Scoglioia { process. Red Top Scoglioia Keene's K-3 SABINITE* ACOUSTICAL PLASTER Quick For gauging lime putty to Troweling produce a quick setting , Keene's plaster finish. The gauging will set In about 2 hours. Red Top Quick T roweling Keene's K-4 One ton used neat according to specifications will cover about 400 to 500 square yards. *Reg. Trade Mark Sabinite Acoustical Plaster substitutes a sound-absorbent wall or ceiling finish for regular sound-repellent plaster finishes. Available in white, ecru, butt, ivory and cream. In three types: Sabinite 38 for damp places (swimming pools, etc.) ; Sabinite F, a general purpose float finish that also may be troweled; Sabinite M, a trowel finish not quite as smooth as regular finishing plaster which also may be floated. See pages 38 and 89 for acoustical data. 10 for acoustical dafo. 40 YEARS OF PROGRESS THROUGH RESEARCH^ A USG PLASTER FOR EVERY BUILDING PURPOSE . FOR INTERIOR USE ONLY BASE COAT PLASTERS Type Neat Gypsum Plaster (Also called: Cement. Hardwall. Patent, Rock, etc., in various parts of the country) Sanded Gypsum Plaster (Also called Prepared) Wood Fiber Gypsum Plaster (Also called Pulp) Bondcrete Plaster Fbered with manila. sisal, goat hair, mixed or straignt. Not fibered. Extra fibered. Regular. Masonry. Sanded Wood Fiber. j Used For i ; Sand Advantages Scratch (1st) and brown (2nd) coats Added at ioo Most used plaster Strong, ruggea stT* of plastering on any lath or base or See pg.35.Clause 5a. , bilized set and quick-drying, nre-oroof* open or closed type except concrete. ' for specificanons and [ Economical where gooo sand <s evaii)t>ie' Maximum coverage per ron. Umfo,. All scratch (1st) coats on closed lath: Rocklath. Pyrobar. insulation board, etc. and brown (2nd) coats. Good sand in proper auantitv is essentia! for good plastering. setting time. Available anywnere. Scratch coats on metal and wire lath. The fiber prevents excessively heavy keys in lath of these types. Use sand as specified in AS.T.M. Soecificafions, page 39. * s Scratch Ustl and brown (2nd) coats on all bases except masonry. Scratch (1st) and brown (2nd) coats on brick, tile, Pyrobar. Not over concrete. Scratch (1st) and brown (2nd) coats on lath only. See "Wood Fiber'' for advantages. Mill mixed. Add no sand at |Ob. Add water only. See pg.35 Cause 5b. for specification. Selected cry sand thorougniy mixed in mill. Recommended ror use wnere goc sand is not available. Prevents ovsanding. Avoids winter rrouoies frozen sand. Assures correct sanding grade and Quantify. Scratch (1st) and brown (2nd) coats on ail bases except masonry. Mill mixed. Shreds of selected wood fiber replace sand. Add wafer only. See pg. 35. Clause 5c. for specification. All advantages of sanded plaster (abovt plus maximum quantity or gypsum p. yard of wall. Hence, superior fireproc mg, strength, toughness, ana insulabc Withstands vibration better. Holds na and screws better -- the choice of most gypsumisrs for their own homes. Bonds over monolithic concrere. Add water only. See pg. 36. Clause lid, for specifica tion. Highly cementitious, low volume cfwir material designed to stick to clean, d; roughened concrere. 6rown coat of rte. plaster sanded not over 3 to \ may t used over Bondcrete on ceilings as wt as sidewalls. See directions on ba Should be cross-raked to receive finii coat. For interior use only. ^ FINISHING PLASTERS PREPARED FINISHING PLASTERS Type 1 Used For Prepared Trowel Finish White Gray (local) Slate Prepared Float Finish White Light Gray. Gray Oriental Colored Finish White and Twelve Shades See page 40. Sabmite Acoustical Plaster Three types, white and four shades ~ iHard smooth finish for enamels, paint, wall- 1 (paper. May be left undecorated. I 1 fFor stairway and kitchen dados, low cost black- i (boards, ere. Needs no paint but may be painted, i 1 Floated Sand Finish for paints (Texolife). 1 Not for wailoaper. Degree of sand texture : < can be varied by type of float used. <See | page 36. Clause 12b). j j For textured or floated finish coats which are 1 self-decorating. Trowel finish made to oroer i 1 only. Acoustical correction ' j i Sand Add water only Add water only Add water only Add water only Advantages . Mill mixe^--will not streak, contains no lime ? "pop" or saponify paint. Positive set. Does nor shnn) No alkali to burn workmen. Best bond to gpsur plasters. V.a*f be polished---produces dense, hard, a most grainless finish. Can be decorated wnen dry. Same as above exceot plaster produces a matte* c sand finish under the plasterer's float. Excellent wa and ceiling treatment where flat paints are used. Can be decorated when dry. ^ Carefully graded and sized aggregates plus select* pigments: produce* a stone-like floated 10b or an variety of texture in white or color. Mill mixmg an control of color provides full assurance against streak ing and color differences. Exceptionally hard, durabl finish. May be washed. | Inexpensive, fireproof, amply sound-absorbent ! ' A ^ JOB-MIXED FINISHING PLASTERS TROWEL FINISHES--Many plasterers prefer to mix their own finishes "on The |00." The smooth stone-like trowel fmtsh, variously known as: White Coat, Skim Coat. Cauged Finish, Lime-Putty Finish and more commonly as Lime-Putty--Plaster-of-Pans Finish is made by gauging lime with gauging plaster in the ratio of 1 part gauging piaster to two parts hydrat ed lime by weight. (See page 36. Clause 12a for specification!. Lower amounts of gauging plaster may result m weak, slow-setting fmishe* i that will craze crack. The practice of sifting the fiber from neat wall j plaster using the plaster to gauge lime for finishing is no longer neces- 1 sary. Specially made gauging plasters are available everywhere, which-I serve better and cost no more. Available DSC Lima and Caugmg Plasters^ are listed below. J LIMES AND GAUGING PLASTERS FOR JOB-MIXED FINISHES Lim*s Brand Type No. Typo Color Relative Costt Farnom s Cheaira- (High Calciumi Blua Label Chesire (High Calcium) PlasTimax- High Calcium Rod Top Dolomite Ivory13 Dolomite Crand Prize Dolomite Samoion" Hydrate Dolomite USC5 Hydrated Lime Dolomite Blue Valley Dolomite u LI L3 L3 L3 L3 L3 L5 15 Quick lime Quick hme Hydrated Hydrated Hydrated Hydrated Hydrated Pressure Hydrated Pressure Hydrated White White White White White White White White White It 11 II t lit lit lit lit Ilf II | Coverages per ton. wnen mixed with prooer proportions or gauging plaster: Quick Lime, 1000 so. yds. Hydrated Lime. 50C-700 sq. yds. Pressure Hvdrated. 500-700 sq. yds. * Advantage* Large putty production. High Strength. ^ Large putty production. Hign Strenf** Stores better. No pop dangers. Fine Hydreted Finishing Lime. Fine Hydfgted Finishing Lime. * Fine Hydrated Finishing Lime. ^" Fine Hydreted Finishing Lime. j Over 92% Hydration. A super ' mixing, easy working, economical. Ulff m AOT3 :ioaa-. piaster Bw Ground Six* Plaster j I | Thickness ' Coverage Per Tors-- j Typo No. : Over Loth j Ready for Finish Coot Psgo Si j i 1 Relative Cost + . USG Brands Used Locally x;:aiath - 3th Ifh V' larh zr zr rile l_-~i: jypsum rde !J,, .9 34" J" 5V' . j' \ " 180-210 sq. yds. 225-240 sq yds. 105-135 sq. yds. . " 225-240 sa. vds. T/j- 165-200 so. yds. ir 235-255 sq. yds. SI Add brand and fibermg sore: 2 parts of sand, by weight, to one of piaster were used in all of the .^plications above except those over brick, file and Pyrobar which require 3 to i Ir Economical. Standard construc tion on same lath generally shows lower costs than Sanded or Wood Fiber. Red Too41 Red Tod Big Four* Red Top Niagara Peerless Red Top ivory* Red Top K-ng's Windsor* Red Top Eldorado* iCvpsite. see og. 30) Red Too Cramte Red Top Hardwall Red Top Overland Nephi Hardwall_____________ .vood lath ^.ccfclath ;nsuiafton lath Metal lath 5nck or tile ?yrcoar Gypsum file i4' :Vi" i3*-3 Vi .vc:c lath ^cc<'ath Metal fafh rsuiation lath 1/4I" or aoplicafion direct to ,i-free roughened con- j rete surface only. ffc" 50-70 sq. yds. 'X 75-80 sq. yds. 75-80 sq. yds. 35-45 so* yds. 45-55 sq. yos. 65-70 sq. yds. B2 i B2M for masonry B2W for Sanded Wood Fiber. Add brands. II f Cost slightly more rhan "Neat'* n ptace on identical lath. Red Top* Red Top Brown Mortar Red Top Lath Mortar Red Top Niagara Peerless Red Top Ivory* ^ Red Top King's Windsor* Red Top Big Four* USC Niagara Peerless \x'X 90-100 sq. yds. v2~ I I 5 -1 20 sq. yds. 55- 65 sq. yds. Vi' I I 5-120 sq. yds. B3 Add brand 90 to 120 sq. yds. depending on roughness of surface. 34 lilt Costs more m place than "Neat" or Sanded on same lath. IV? Costs about the same as Wood Fiber on Rocklath. Red Top* Red Top Ivory* Red Too Big Four* Red Top Eldorado* (GypsJte. see pg. 301 Red Top Overland* I Red Top King's Windsor* j Red Top Niagara Peerless Ivory*_____________________ j Bondcrete* PACKAGING: Base Coat Plasters and Prepared Finishes in 100-fb. paper bags. Gauging Plasters in 100-lb. paper bags and 230- or 300-lb. (net) bbls. verage Per n 1 Type No. 1 j (See Page 3)' Relative Costt 2--00 sq. yds. FI , Add brand. [ ** ; White finishes i are slightly | higher. 2-273 sq. yds. i F2 ' Add brand. , 111 1 White finishes are slightly higher. T-SOOsq. yds. F3 vmg wirh Specify ;tn of texture color mr > ; USG Brands Red Too* and Red Top Universal White Trowel Finish Red Top Adamant White Trowel Finish Red "op Adamant Slate Trowel Finish Red Top Adamant IXXX Trowel Finish Red Top Badger* Cray Trowel Finish Red Top Adamant Cray Sand Float Finish Red Top Adamant Wht?e*Sand Float Finish Red Top Sand Float Finish (Light Crayl Red Top White Siiico* Sand Float Finish Red Too Cray Siiico Sand Float Finish Oriental* Interior Colored Finish . sq. yds. n. thick F* 1V f ! Specify type l j and color. Three types. See pages 88 and 89. NOTES * RELATIVE COSTS--Higher figures m this column rep resent higher probable in stalled costs, lower fgures --tower costs. They repre sent relative not proportion ate differences. Variations m once, wages and local practices make accuracy im possible. Architects should get accurate figures from local contractors before drawing final specifications. The "Relative Costs1' given here are offered as an aid for preliminary selection only and should not be used m any calculation or estimate. PACKAGING: Quicklimes in 50, 80, 90 or 100-lb. paper bags; 180 or 280-lb. (net) bbls. Hydrated Limes in 40 or 50-lb. paper baas and bu FLOAT FINISHES----Float finishes are made on the job by adding sand of peered color and size ro unfibered near plaster. (See page 36. Clause :ei. When a wnitt float >s desired, the Lime-Sand-Keene's Finish of page 35. Clause 8f ts recommended. KEENE'S CEMENT FINISHES--Several very hard water-resistant finishes may be oreoared "on the job'* with Keene's Cement and Fine White Fin ishing Lime 1 see page 31 and page 35. Clause Scl. providing maximum physical perfection m olaster finishes. They set slowly, may be scored to resemble ceramic rile or masonry. The more Keene's in the mixture, the harder and denser the finish. NOTE: For Mason's Limes see pages 56 and 57. fing Platters id Type No. s., Color ! od Slow Set Tao Quick Set TPO Sfar " Slow Set / alley-- Valley Local Valley Quick Set Valley Local Quick Set i Diamond'"' `00 Suoertine G2 Slow Local G4 Quick Local 08 Quick White G6 Slow White G2 Slow. Local G6 Slow White G2 Slow Local G8 Quick White G4 Quick Local Quick White G6 Slow White ae. ) ron mixed with 2 tons <dry/ Hydrated l.me covers from 1000 to 1400 sq. yas. Relative Coftt t 1t II t lit 11 II t 1t lit ;r 11 r 11 - I Advantages i Low cost, high strength, stow setting. | Low cost, high itrangrh, quick sorting. { Fine, high purity, white. | Fine, high purity, white. } Low cost, high strength. High purity, white gauging plaster. , Low cost, high strength. High purity, white. Low cost, high strength. High purity, wmte. High punrv, wmte. BB012 21 10 U^S AMERICAN STANDARD SPECIFICATIONS For Gypsum Plastering Including Requirements for Lathing and Furring Reprinted by permission of A. S. A.. A. I. A. & A. S. T. M. ' Copyright 1939 by Am. Inst. Artht's ond Am. Soc'y tor Tcifg M't'ls. A fully competent specification is a maior essential for good plcster work. The American Standard Specifications, which follow, are recommended. We suggest their inclusion, in full or by reference, in oil building specifications where plaster ing ond lathing is involved. They ore printed here through the courtesy and permis sion of the American Standards Association and the spon soring organizations: The American Institute of Architects and the American Society for Testing Materials. The per sonnel of the committee which produced them is sufficient evidence of their merit. PERSONNEL OF SECTIONAL COMMITTEE ON SPECIFICATIONS FOR PLASTERING A.S.A. Project A 42 SPONSORS: The American Institute of Architects American Society tor Testing Materials CHAIRMAN - W. R. MocCornock Massachusetts Inst, of Technology, Cambridge, Mass. VICE-CHAIRMAN: Theodore Irving Coe American Inst, of Architects, 1741 New York Avenue, Washington, D. C. SECRETARY: J. W. McBurney National Bureau of Standards, Washington, D. C. American Concrete Institute: Pearson, J. C. American Forest Products Industries, Kimbell, R. G. Inc.: American Institute of Architects: Coe, Theodore I.; MacCornack, W. R. American Society for Testing Materials: Pearson, J. C.; Schweim, H. J.; Walker, Stanton- Welch, F. C.; Wells, L. S. Building Trades Employers' Association of New York: Pearson, F. E. Contracting Plasterers' International Association: McDonnell, Edward Federal Works Agency, Public Buildings Administration: Waples, H. H. Finishing Lime Association of Ohio: Johnson, L. E. Gypsum Association: Jones, H. Z. Insulation Board Institute: Miller, R. T. Metal Loth Manufacturers' Association: Tuscany, Arthur National Association of Building Owners and Managers: Cheyney, C. Robert Nation.' Association Real Estate Boards: Bohnen, Arthur National Lime Association Stauffer, S. W. National Sand and Gravel Association: Walker, Sfanron Operative Plasterers' and Cement Finishers' International Association: O'Reilly, J. F. Portland Cement Association: Koiser, W. G. U. S. Housing Authority: Howes, B. A.; Voter, Oscar (Alt.) Wood, Wire and Metal Lathers' International Union: McSorley, W. J. Members-at-Large: Lynas, A. O.; Lynch, W. J.; McBurney, J. W.; McNulty, J. D.; Payne, W. A. 'T GENERAL NOTES ON PLASTERING To obtoin the best results it is essential that all operations con nected with plastering and lathing shall be m accordance with the best practices of the industry. Attention is specifically directed to the following: Tools used for mixing and applying plaster must be kept clean. Dirty tools accelerate the "set" of plaster. Water must be clean. Water containing salt or alum, or water in which tools have been washed, accelerates the "set." Water from stognant pools and wells frequently contains orgomc or vegetable matter which may retard the "set." Sand is not a cementitious material. It is, however, a very important ingredient. Extreme core must be exercised in its selection. Fine sand should never be used. The finer the sond the larger the total surface area in relation to the volume of particles and the greater the amount of gypsum required to coat each gram. Sand used in plaster must be well graded from tine to coorse. Oversonding weakens the plaster proportionately, and usually accelerates the "set." Fine sand, having rounded particles, uniform in size (fre quently called "quicksand") must not be used. It can be easily detected since it settles in the bottom of the mixing box, gives the mixture a watery appearance and causes it to work "short," and produces a weak plaster. In the accompanying specifications for gypsum plastering all formulas for plaster mixes are based on the use of sond con forming to the requirements of the Standard Specifications for Sand for Use m Plaster (A.S.T.M. Designation: C35-39) of the American Society for Testing Materials.1 Drying A portion of the water used for mixing piaster is necessary for the chemical reaction which sets ond hardens plaster. Therefore, plaster must not be permitted to ary out before setting has taken place. It must be protected from alasts of wind and from drying unevenly or too rapidly. If glazed sash are not in place, and it is necessary to enclose the building, exterior openings of the building shall be screened with cheese cloth, or similar material. In cold, damp, or rainy weather, properly regulated heat must be provided, but precautions must be token ogainst too rapid drying before set has occurred. As soon as the plaster has set, free circulation of air shall be pro vided to ovoid sweat-outs. After the plaster has set, heating shall be continued to insure as rapid drying as possible. Plaster must not be allowed to freeze before it has set. Alternate freezing and thawing must be avoided. Bituminous Coatings--Because bituminous compounds do not provide ideal bases for plaster, the applying of plaster to ma sonry or concrete which has been coated with such compounds should be discouraged. Plastering on Monolithic Concrete Surfaces, regardless of fhe type of plaster used, requires care and the taking of certain precautionary measures. The use of dressed (smooth) lumber, metal, and plywood forms, oiling or greasing of same, and the vibrating of concrete produces concrete surfaces which are so smooth that mechanical bond necessary for piaster is absent. The adhesion of plaster to concrete deoends largely upon the condition of the concrete surfaces af the time of application of the piaster, type of plaster used, and workmanship employed. Concrete surfaces which are to be plastered should be rough. The desired character of surface may be procured by using rough forms which have not been oiled or greased, or by hacking or bush-hammering the surface to be plastered after the forms ore removed and before the concrete has become too nord, or by applying a dash-coat of portland-cement grout. `See Note Page 39. c UNI TEDf STATEi GYPS UR COMPANY STANDARD SPECIFICATIONS FOR GYPSUM PLASTERINGChapter I NOTH--These specifications are intended to describe minimum requirements. The use of equivalents, or better, is permissible. GENERAL PROVISIONS ' 1. 'aJ The work includes all labor, materials, services, equip ment, and scoffoldmg required to complete the lathing and plastering of the project in accordance with the drawings and specificat ions. ib) Scaffolding shall be constructed and maintained in strict conformity with oppncoble lows and ordinances, ana so as not to interfere with and obstruct the work, of others. icJ The work shall be properly coordinated with the work of other trades. DESCRIPTION OF TERMS 2. 10) The term "attached'' or "furred" as applied to ceiling construction, means that the furring members are attached directly to the structural members of the building. <b) The term "suspended," as applied to ceiling construction, means that the furring members are suspended below the struc tural members of the building. (c) The term "main runners," as applied to metal construction, means the runners which are-attached to or suspended from con struction above. Id) The term "cross furring," as applied to metal construction, means the furring members which are attached at right angles to the underside of mom runners or other structural supports. SCOPE OF WORK 3. (a) The following wotk shall be included: (b) The following work shall not be included: MATERIALS 4. (o) The materials shall conform to the following specifica tions of the American Society for Testing Materials, or any sub sequent revisions thereof: A S.T.M. MATERIALS DESIGNATIONS SAND FOR USE IN PLASTER'.................................................................... C 35-39 i i imct l Hydrated Lime for Structural Purposes1.......................... C 6-31 limc j Quicklime for Structural Purposes2..................................C 5-26 [ Ready-sanded ....................................... i gypsum piasters'. SSS,;,;*;*c 2s - so Calcined gypsum for finishing coa. MOLOING PLASTER3........................................................................... `_____ C 59 - 30 KEENE'S CEMENT3........................................................................................... C 61 - 30 WATER. .. .shall be clean, fresh, suitable for domestic consumption, and free from such amounts of mmerol and organic substances as would affect the set of the plaster. 9 The requirements for plosticity prescribed in Standard Specifications 0 6-31 shall apply to hydrated lime and quicklime used for lime purry m finishes, and oil time used shall be suitable for base and finish coat plastering. (b) All manufactured materials shall be delivered in the orig inal packages, containers, or bundles bearing the name of the manufacturer and the brand. (c) Piaster and all cementitious materials shall be kept dry until ready to be used; they shall be kept off the ground, under cover, and away from sweating walls and other damp surfaces. Metal goods shall be protected ogainst rusting. BASE COAT PROPORTIONS 5. Base coat plaster shall be proportioned as follows: (a) Gypsum Neat Plaster: NOTE--The term "near" as applied to gypsum plaster means thot the material, as shipped by the manutacturer, does not contain sand. Sand musr be added at me job. Neat plaster may be tibered or unfibered. Scratch (first) coot on all types of lath sholl be mixed in the proportions of 1 part of gypsum neat plaster to not more than 2 ports of sand, by weight. Base (first) coat on masonry surfaces (except monolithic con crete) and brown (second) coat m oil three-coat work shall be mixed in the proportions of 1 part of gypsum neat piaster to not more than 3 ports of sand; by weight. (b) Gypsum Ready-Sanded Plaster: Gypsum ready-sanded plaster shall be used without the addi tion of sand. For scratch (first) coat on oil types of lath, scratch-coot gypsum ready-sanded plaster shall be used. For application to masonry surfaces (except monolithic concrete) ond for brown (second) coat in all three-coat work, either scratchcoar or brown-coat gypsum reody-sanded plaster may be used. (c) Gypsum Wood-Fiber Plaster: For two- and three-coat work on all types of lath, gypsum wood-fiber plaster shall be used without the addition of sand. For two- and three-ccat work on masonry surfaces (except mon olithic concrete), gypsum wood-fiber plaster shall be mixed m the proportions of I part of plaster to I part of sand, by weight. HAND MIXING 6. Material which has partially set shall not be retempered or used. Frozen, coked, or lumpy material shall not be used. The mixing boxes sholl be watertight and thorougnly cleaned of all set or hardened materia). If mixing is done in the building, waterproof protection shall be provided under the mixing boxes and water barrels. Tools shall be cleaned after mixing eoch batch. o) Gypsum Neat Plaster--Sand sholl be added at the job. Plaster ond sand shall be mixed drv to a uniform color of one end of the box, hoed into water at the other end, and thoroughly mixed to the proper consistency. lb) Gypsum Ready-Sanded Plaster-^Sand shall not be added. Plaster shall be placed at one end of the box, hoed into water at the other end, and thoroughly mixed to the proper consistency. MECHANICAL MIXING 7. Material which has partially set shall not be retempered or used. Frozen, caked, or lumpy material sholl not be used. The mixer shall be cleaned of all set or hordened material before ma terials for a new batch are loaded. Each batch shall be mixed separately. (a) Gypsum Neat Plaster--Sand shall be odded at the job. The following cycle of operations shall be followed while the mixer is in continuous operation: Put in the approximate amount of water, Add approximately half the amount of sand, Add all the plaster. Add remainder of the sand, Mix to the proper consistency, adding water if necessary, and Dump the entire batch and use. NOTE---When the mixer is used intermittently, small amounts of sand and water shall be addec after dumping each botch and the mixer run for a few minutes. After dumomg the sand and water, the mixer will be clean and reody for a new botch. <b) Gypsum Ready-Sanded Plaster--Sand shall not be added. The following cycle of operations shall be followed while the mixer is in continuous operation: Put in the approximate amount of water, Add the plaster, Mix to the proper consistency, adding water or plaster, if necessary, and Dump the entire batch and use. NOTE--When the mixer is used intermittently, a small amount of water shall be added after dumping each batch and the mixer run for a few minutes. After dumping the water, the mixer will be clean and ready for a new botch. (c) Lime Putty--Quicklime shall be thoroughly slaked, allowed to cool and then let stand not less than 24 hr. Hydrated lime shall be soaked at least 24 hr. All lime putty shail.be kept moist until used and shall be screened through a No. 10 sieve before being used. FINISH COAT PROPORTIONS 8. fa) Gypsum Lime-Putty Trowel Finish shall be mixed in the proportions of 3 parts of lime putty to I part of gaging plaster, by volume. (b) Prepared Gypsum Trowel Finish shall be mixed with water to the proper consistency in accordance with the manufacturer's directions. (c) Keene's Cement Finish: MEDIUM HARD FINISH shall be mixed in the proportions of 1 part of lime putty to I Zi parts of Keene's cement, by volume. NOTE--if mixea mechanically, The proportions shall be 2 cu. ft. of lime puffy, 1.5 cu. ft. of Keene's cement, ond 10 lb. of fine white, washed sand, mixed as follows: Put m opproximatelv 24 at. of water, Add iime, sand, and Keene's cement. Mix for not less than l 5 mm. nor more than 20 mm., and Dump entire batch and use. HARD FINISH shall be mixed in the proportions of I part of lime putty to 3 parts of Keene's cement, by volume. (d) Prepared Gypsum Sand Float Finish shall be mixed with water to the proper consistency in accordance with the manufacturer's directions. 1 The A S.T.M. Standard Specifications for Sand for Use in Plaster (C 35 - 39) 3re appended, see o. 39. 5 These sfonaord specifications of the American Society for Testing Ma terials are puolisned m the 1936 Book of A.S.T.M. Stanaords, Part II, pp. 30, 21, S9, 364, and 255, respectively. BB012 2112 40 YEARS OF PROGRESS; THROUGH* RESEARCH STANDARD SPECIFICATIONS Continued (e) Gypsum Sand Float Finish shall be mixed in the proportions of 1 parr of gypsum near unfibered plaster to not more than 2 parts of sand, by weight. Sand shall pass a No. 12, 16, or 20 sieve, depending on the texture of the surface desired. <f) Keene's Cement--Lime Sond Float Finish shall be mixed in the proportions of 2 parts of lime putty, I Zz parts of Keene's cement, and 4 Zz parts of sand, by volume. (9) Colored Finishes for Float ond Texture Work shall be mixed with water to the proper consistency in accordance with the manu facturer's directions. THICKNESS OF PLASTER 9. (a) Grounds shall be installed so as to provide for the following thicknesses of piaster, from face of plaster base to finished plaster surfaces: LATH THICKNESS Of PLASTER f Metal, Wire Lath, and Wire \ Fabric................................................................................ V% in., mm. All other types....................... ..................................'/2 m., mm. UNIT MASONRY AND CONCRETE WALLS............................ S/fl in., mm. MONOLITHIC CONCRETE CEILINGS. f 1/3 in., min. ......................... 1^8 in- max. NOTE.-- If monolithic concrete ceiling surfaces reauire more than m. of plaster to oroduce desired lines or surfaces, metal lath or wire lath shall be attached thereto, in extreme cases metal furring may be required. (bJ Wood Grounds will be furnished and installed by others. (c> Metal Grounds shall be furnished and installed by the plaster* ing contractor. PREPARATIONS FOR PLASTERING !0. (0> Temperature and Ventilation.--Plaster shall not be applied to surfaces which contain frost. A minimum temperature of 40 F. shall be maintained in the building for an adequate period prior to the application of the plaster, while plastering is being done, and until it is completely dry. If the maintaining of this minimum tem perature requires the furnishing of heat, it shall be provided by .......................... Salamanders shall not be used. Adequate, properly regulated ventilation shall be provided. (b) Mosonry Surfaces on which suction must be reduced shall be properly wet down immediately before the piaster is applied. NOTE.--This is particularly important if wood-fiber piaster is used. (c) Wood Lath shall be thoroughly wet down from 12 to 24 hr., ondTh very dry weather again from 1 to 3 hr., before the plaster is applied. (4) Gypsum and Fiber Insulation Lath shall not be wet down. () Monolithic Concrete Surfaces shall be cleaned of all dust, loose particles, ond other foreign marter. Laitance and efflore scence shall be removed by washing first with a 10 per cent solu tion of commercial muriotic acid and water and then with clean water to remove all troces of acid. Grease and oil shall be com pletely removed. Concrete surfaces shall have sufficient roughness to provide proper bond; if necessary the surface shall be evenly wetted, not saturated, to provide proper suction. If surfaces are not rough, they shall be hacked or bush-hammered, or a dash-coat of port land cement grout, composed of 1 part of cement and 1 Vz ports of fine sond mixed to a mushy consistency shell be applied. The Portland cement grout shall be forcibly dashed on the concrete surface, using 0 stiff fiber brush, with o whipping motion. This coat shall be kept domp for at least two days immediately follow ing its application and then allowed to dry. Before application of plaster, the surface shall be evenly dampened if necessary to provide proper suction. If) Surfaces shall be carefully examined before the plaster is applied thereto, and the proper authorities notified of any ond all unsatisfactory conditions. Application of the plaster shall not then proceed until such unsatisfactory conditions have been satis factorily remedied or adjusted. (9) Metal Grounds and other accessories such as corner beads, screeds, picture molds, etc., shall be corefully examined to see that they ore straight, curved, plumb, level, square or true to the required angles, as the case may require, before the plaster is applied. APPLICATION OF BASE COATS 11. (0) Two-Coot Work.^Base (first) coat shall be applied with sufficient moteriai and pressure to form good full keys on wood lath, ond good bond on gypsum or fiber insulotion lath or masonry, as the case may be, and to cover well, and then be doubled back to bring the plaster out to grounds, straightened to true surface with rod and darby ond left rough, ready to receive the finish (second) coat. (b) Three-Coat Work.--Scratch (first) coot shall be applied with sufficient materiel and pressure to form good full keys on wood and metal lath, wire lath, and wire fabric, ond good bond on gypsum or fiber insulation larh or mosonry, as the case may be, and to cover well, and men be scratcned to rough surfoce. Brown (second) ccar shall be applied, after the scratch (first) coot has set firm ana nara, brought out to grounds and straight ened to a true surface with rod and darby, ond left rough, ready to receive the finish '.third) coat. NOTE.__ for best "esuits. ploster screeds should be applied to the scratch ccor prior to ;ne application of the brown coat. (c) Solid Ploster Partitions shall be not less than 2 n. m thickness and shall hove scratch, bacK-up, brown, and finish coats. Scratch coot shall be applied on the lath side with sufficient material ond pressure to form good keys ond to cover well, and then be scratched to 0 rough surface. Temporary brocmg of studs shall be furnished on the channel or rib side of the partition ond maintained until the scratch coot on the lath side has set. Back-up coat shall be applied on the channel or rib side, ofter the scratch coat on the lath side has set firm and hard, in not less thon two operotions, the first to adequately cover the keys of the scratch coat, ond the other coat or coats to bring the ploster our to grounds. It shall then be straightened to true sur face with rod and dorby and left rough, reody to receive the finish coat. Brown coot on the lath side shall be applied over the scrotch coat, after the back-uo coat on the channel or rib side has set, and shall be rodded, darbied, and left rough, as specified for the back-up coat. Plaster shall extend to the floor. All spaces between grounds shall be filled. Hollow metci bucks shall be filled solid. Wherever possible, plastering shall be commenced or the bottom of the partitions. fd) Plastering on Monolithic Concrete.--Plaster shall be spectolly prepared bond plaster for use on concrete. Sand shall not be added. Surfaces of wolls ond columns sholl have a scratch coat of bond ploster, followed by a brown coat of gypsum plaster (in the propor tions of I port of gypsum neat plaster to not more than 3 parrs of sand, by weight) trowelled into the scratch coot before it has set. The brown coat shall be brought out to grounds, straightened to a true surfoce with rod and dorby, and left rough, ready to receive the finish coat. Surfaces of ceilings shall have a coat of bond plaster scratched in thoroughly, doubled bock, and filled out to a true, even surfoce ond left rough, ready to receive the finish coat. APPLICATION OF FINISHES 12. (0) Trowel Finishes.-- In the application of trowel finishes the use of excessive water shall be avoided: Gypsum Lime-Putty Trowel Finish sholl be applied over o bose coat which has set and is surface-dry, scratched in thoroughly, laid on well, doubled back and filled out to a true, even surface. The thickness shall be from 1/16 to Vk m. The finish shall be allowed to draw a few minutes and then it shall be well troweled with water to a smooth finish, free from cot faces and other blemishes. Prepared Gypsum Trowel Finish shall be applied in accordance with the manufacturer's directions. Keene's Cement Finish shall be applied over a thoroughly set base coat which is nearly, but not quite dry, scratched m rhorougnly, laid on well, doubled back and filled out to a true, even surface. The thickness shall be from 1/16 ro Za m., unless the finish coot is marked off or jointed, in which case the thickness may be increased as required by the depth of marking or jointing. The finish shall be allowed to draw a few minutes and then it sholl be well trowelled with water to a smooth finish, free from car faces and other blemishes. NOTE.--If the base coot has dried out, it sholl be sprayed with water, bur not socKed, before the finishing coot is applied. <b) Float Finishes.--The following float finishes shall be applied over a thoroughly set bose coat which is nearly but not quite dry, laid on with a trowel to an even surface, ond then floated (with wood, carpet, cork, rubber, or other type float, depending on rhe texture desired) to a true, even surface, free from slick spots ond other blemishes; Prepared gypsum sand float finish, Gypsum sand float finish, and Keene's cement-lime sand float finish. NOTE.--If the base coot has dried out, it shall be spraved with water, but not soaked, before the finishing coat is applied. <cl Colored Finishes for Float and Texture Work shail be applied m accordance with the manufacturer's directions. id) Acoustical and Other Special Purpose Plasters snail be aooued m accordance with rhe manufacturer's directions. PT *2 '9 & X UNITED STATES GYPSUM COMPANY SPECIFICATIONS FOR LATHING AND FURRING Chapfer II NOTE:--These specifications ore intended to describe minimum reauirements. The use of equivalents, or better, is permissible. For some types of structures it may be cesirabie to use metal lath ana supporting members heavier than the minima listed in these standard specifications. MATERIALS 13. (ai Gypsum Lath shall conform to the Srcndard Specifications for Gypsum Lath (A.S.T.M. Designation: C 37 -- 34) of tne American Society for Testing Materials,* or any subsequent re vision thereof. Gypsum lath shall conform to the following dimensional require ments: Thickness..............................................................................................5/16, 3/3j or l/x m. Width..................................................................................................... : 5 m. Length...................................................................................................32 or 48 in. 'bl Wood Lath shall be No. 1 grade, reasonably clear, evenly manufactured, and free from detrimental defects. A few worm holes, small pitch pockets, well set or firm knots, not more than 3/i in. in diameter and not bunched, and wane not more than one-third the thickness end one-third the width for one-third the length on one side of tne lath, or its equivalent otherwise located, when not in combination with any other defect, shall be permitted. Wood lath shall conform to the following dimensional require- ments: MINIMUM MAXIMUM Width......................................................... Length...................................................... 1 -7 m 43 m 32 in. (c) Fiber Insulation Lath shall be manufactured from wood cr ofher vegetable fiber subjected to such drying temperature as to effect complete destruction of rot-producmg fungi. Surfaces shall be free from cracks, lumps, excessive departure from planeness, or other defects. Fiber insulation lath shall conform to the following dimensional requirements: PERMISSIBLE DIMENSION VARIATIONS Thickness.....................'/2 m., m., and multiples of 1 2 in. -- ra in. Width........................! 5, 1 8, or 24 in. --m. Length..........................48 in. ---,4 in. Fiber insulation lath moy be either single or multiple ply board. The individual plies shall be joined m such manner as to prevent separation under normal use. Fiber insulation lath Vi in. in thickness shall have a trans verse strength lengthwise of not less than 14 lb. and crosswise of not less than 12 lb. The strength of other thicknesses shall be in direct proportion. The deflection at the specified minimum load (12 lb. or 14 lb.) shall not exceed 0.85 in. and the deflection at the maximum load shall be not less than 0.25 in. Tests to de termine strength and deflection shall be in accordance with the Federal Specification for Insulating Fiber Board (LLL-F-321 a). Id) Metal Lath, Expanded, Ribbed, and Sheet shall be of steel, coated with rust-mhibitive paint after cutting, or cut from zinc- coated sheets. (e) Wire Loth shall be not lighter than No. 19 W. & M. gage wire, 2 V2 meshes per men, coated with zinc or rust-mhibitive paint. if! V-Stiffened Wire Lath shall be not lighter than No. 20 W. & M. gage wire, 2 V2 mesnes per inch, with No. 24 U. S. gage V-nb stiffeners spaced not to exceed 8 in. apart, coated with zinc or rust-mhibitive point. Ig) Paper-Backed Wire Fabric shall be not lighter than No. 16 W. & M. gage, zmc-coated wire, with not to exceed 2 by 2-in. mesh, with No. 26 U. S. gage V-nbs or No. 13 W. & M. gage, zinc-coated wire stiffeners spaced not to exceed 4 m. apart, and absorptive paper backing securely attached to metal in such a manner as to provide full embedment of at least 1/16 m. of ploster for at least one-half of the total length of the strands and one-half of the total weight of the metal. The design sholl be such as to provide a mechanical bond and continuous metallic rein forcement m at least two directions, for plaster. <h) Metol Accessories such as corner Deads, base screeds, con cealed picture molds, etc., shall be not lighter than No. 26 U. S. goge steel, zinc coated, with perforated or expanded flanges or clips snaped so os to permit complete embedment in the plasrer. li) Channels sholl be hot-rolled or cold-rolled steel, free from rust, of the following minimum weights per thousand lineal feet: SIZE ^'4 n. ! ,n HOT-ROLLED . 300 tb. . . -10 lb 3 50 lb ' 2z0 lb. COLD-ROLLED :76 lb. 332 lb. -*2 lb* 553 lb. NOTE.--Cooting with r,jsT-innib,tive :amr neasure. an aeded precautionary LATHING 14. All lath shall be applied with the long dimension at right "ngies ro the supports, except thar furnished m rolls which may oe cppued with the long dimension porailel to the supports. APPLICATION OF GYPSUM LATH 15 101 Gypsum lath shall be securely nailed to wood supports (spaced not to exceed 16 m. on center) at intervals not to exceed 4 in. with No. 13 gage, 1 Va-m., 3-8-in. fJar head, blued nails. The nails shall be driven with the under side of the head flush with the face of the lath. (b) Joints between walls and ceilings shall be staggered. Lath shall be aoplied with the long dimension at right ongles to the framing members, with joints broken in each course. Lath shall nor be butted tightly together, nor be more than Vi in. apart. (c) Cornente shall be securely nailed through loth to supports at all interior angles. (d) Gypsum loth snail be attached to horizontal or vertical metal supports by means of special clips. (e) Special erection systems, on either wood or metal supports, which eftord equal carrying strength may be used, in which event lath shall be erected in accordance with the specifications therefor. NOTE--On ceilings and other large unbroken oreos it is recommended thar .c;n be applied m rectangular nerringpone rashion. APPLICATION OF WOOD LATH 16. lai Wood lath shall be spaced Ve in. apart at the edges, Vi m. apart at the ends, and sholl be nailed securely at right angles to wood supports (spaced not to exceed 16 in. on center) with 3d fine, No. 16 gage blued nails, full driven. (b) Joints shall be broken every seventh lath. (c) Lath shall not run through from one room to another. (d) Carnerite shall be securely nailed through the lath to the supports at all interior angles. APPLICATION OF FIBER INSULATION LATH 17. i a) Fiber insulation loth shall be nailed securely to wood supports (spaced not to exceed 16 in. on center) at intervals of not more than 4 V2 m., with blued or bright nails of the following sizes: For ' ';-in. loth...................1 '-g-m. blued fiber-board nails or 4d box nails. For I-m. larh..................... i34-m. blued fiber-board nails or 6d box nails. (b) Noils shall be placed not less than 3/g m. from the ends and nor less rhan V2 m. from ship-lapped, tongued-ond-grooved, or interlocking edges. (c) End joints (except interlocking type) shall be approximately 3/ 16 ro l'a m. Ship-lapped, tongued-ond-grooved, or interlocking edges snail be fitted ro moderate contoct. (d) Carnerite shall be securely nailed through the lath to rhe supports at ail interior ongles. APPLICATION OF METAL LATH, WIRE LATH AND WIRE FABRIC 18. (a) The weight of metal lath, wire lath, and wire fabric sholl conform to me requirements prescribed in Table I. (b) Metal lath (except ribbed), wire loth, and wire fabric shall be attached to horizontal wood supports with not less rhan 6d common nails or I Vi-m. roofing nails driven to a penetrotion of at least I in., or I Vi-m. No. 1 4 W. & M. gage wire staoles driven home; end shall be attached to vertical wood supports with not less rhan 4d common nails or 1-m. roofing nails driven ro a penelranon of at least Va m., or 1-in. No. U W. & M. gage wire staples driven home. The 3/&-in. rib lath, stiffened wire lath, and sheet lath shall be attached to horizontal and vertical wood supports with nails or staples Vq in. longer than required for the aforementioned bases, unless attachments ore through the ribs, m wmch event nails or staples shall be of such length os ro provide at least 1-in. penetration in horizontal wood supports and 3i-m. penetration m vertical wood supports. Common nails sholl be bent over to engage at least three strands of loth. Other methods of attachment which afford equal carrying strengrn mav be used. 936 Szok or A.S.T M. Standards, Part 11, p. 97. BB012 2114 40 YEARS, OF PROGRESS THROUGH RESEARCH* STANDARD SPECIFICATIONS Continued <cl Metal lath, wire lath, and wire fabric shall be secureiv oftached to horizontal and vertical metal supports with No. 18 W. & M. gage, galvanized, soft annealed wire ties. (d) All attachments for securing metal lath, wire lath, and wire fabric shall be spaced not more than 6 in. apart. let Side laps of metal lath, wire lath, and wire fabric shall be secured to supports and be tied between supports at not to ex ceed 9-m. intervals. If) Flat expanded metal lath and wire lath shall be lapped Vi in. at the sides and 1 in. at the ends. Ribbed lath shall be lapped at the sides by nesting, and I in. at the ends. Sheet lath shall be lopped at the sides and ends by nesting. Stiffened wire lath and fabric shall be lapped by nesting ribs or selvage I in. at the sides, and I in. at the ends. <gl Special erection systems which afford equal carrying strength may be used, in wmch event lath shall be erected in accordance with the specifications therefor. lh) Application of flat expanded metal lath shall be starred one support away from a corner and be bent into or around the corner and carried on to the support on the abutting surface. Loth shall first be applied to ceilings and the sheets carried down 6 in. on to the walls and partitions. If lath is not used on ceilings the lathing may be started^at the top of the wall ond may be bent and carried up 6 in. on to the ceiling joists. Wherever possible the ends of the sheets of loth shall be staggered. Ribbed and sheer lath, and stiffened wire lath, and fabric shall be butted at in ternal corners. li) Where ribbed, sheet lath, or stiffened wire lath, or fabric are attached to metal supports, cornerite shall be securely tied to lath at all internal corners; such ties shall be applied only at edges of cornerite. Cornerite used on wood supports shall be securely nailed through the lath. Length of wire hangers shall not exceed 150 times their diameter, unless suitable stiffener-separators ore provided for at least every alternate hanger. Where I by 3/ 16-in. inserts are used, the lower end shall be punched for Va-m. bolts and allowed to proiect a sufficient dis tance below the bottom of the slab to permit the attachment of the hanger proper Flat steel hangers shall be bolted to 1 by 3/!6-in. inserts with 3'a-in. bolts. Inserts used in cinder concrete or tile arch con struction shall oe toggled, with 7-m. cross pieces bearing on top of reinforcing steei m cinder concrete or on top of tile arch con struction. In slaps of other kinds of concrete, inserts shall be secured to steel reinforcement or looped and embedded 2 in. in concrete. Wire or rod hangers shall be saddle tied or wrapped around mam runners so as to develop the full strength of the hangers. Lower ends of flct hangers shall be bolted with Ve-in. bolts to runner channels, or bent tightly around runners and bolted to the main part of the hanger. ibl Main Runners for the various spacings of hangers shall be of the following minimum sizes: centers hungers size of main runners Uo fo 3 ft............................1 1 '2-m. cold-rolled channels Uo to J ft...............................: 1 I 2-lb. hot-rolled channels Up to 5 ft..................................2-m. hot-roiled channels or I Vz by 3/1 6-m. angles 1 l-S by * NOTE.--Other shapes of hot- or cold-rohed members of eauol strength may be supstituted <n lieu of the above. (c) Cross Furring for various spacings of main runners sholl be of the following minimum sizes, but the maximum spacings for various types of lath shall not exceed those listed m the last column of Table I ^Section 18 (a)): Maximum Spacing of Supports for Weights of Lath Listed table i.--weights OF METAL LATH, WIRE lath, and wire fabric. Minimum Weionts per Square Yard m Pounds Vertical Subborts Horn onfdl Supports Wood Meral Wood Meral 12 to I31,2 in. Flat expanded, 2.5 lb. Flat expanded, 3.0 lb. Wire lath, 2.48 lb. Flat exponded. 3 0 lb 8 Flat expanaed 3 4 ib. Wire lath. 2.49 ib 16 m. Flat expanded, 2.5 lb. Flot nb, 2.75 lb. Wire loth, 2.48 lb. Wire fabric c Flot expandea, 2.5 ib.u Flat rib, 2.75 lb. Wire lath, 2.49 lb. Wire fabric c Flar exoanded. 3.4 lb. Flat nb. 2.75 lb. , Wire fobnc c Flot rib. 3 0 Ib V-Stiffened. flcr ex panded. 3 0 ib. Wire fabric c 19 m. Flat rib, 3.0 lb. V8-in. rib, 3.0 lb d V-Stiffened. flot exbanded, 3.0 lb. V-Stiffened, wire loth, 3.3 lb. Sheer lath, 4.5 lb. Flat nb. 3.0 lb. V-Stiffened, flat ex panded, 3.0 lb. V-Stiffened, wire lath, 3.3 lb. . Flar rib, 3.0 lb. ' rib, 3.0 lbd ; V-Stiffened, flar exi pended, 3.0 lb. * V-Sttftened, wire larh, ! 3.3 lb. : Sheet lath. 4 5 lb. Flot nb, 3.4 lb. V-Shffened, flat ex- ponded. 3.4 ib 1 V-Stiffened, wire loth, 1 3.3 Ib. | Sheet lath, 4.5 ib. 23 Vi m. Flat rib, 3.4 lb.* 3^-in. nb, 3.0 lb.d V-Stiffened. flat ex: ponded, 3.4 lb i Sheet loth. 4 5 lb. 1 ! H-m. rib, 3 0 Ib d * 3.0-lb. flat expanded lath permissible for 12-m. spacing. 2.5-lb. flat exoanded lath permissible for this spocing only for solid ploster partitions. c Poper-backed wire fabric No. 16 gage wire 2 by 2-m. mesh, with stiffener. d Rod-nboed flat expanded loth of equal rigidity and weight is permissible on some spacings as 3^-m. rib loth. 3.4-lb. flat rip loth permissible for this spocing only for solid ploster partitions. METAL CEILING CONSTRUCTION 19. <aJ Hangers sholi be of ample length. They shall be secured to steei reinforcement m concrete with cinder aggregate and may be secured to steel reinforcement or looped ond embedded 2 m. m concrete with other types of aggregates. For ottochmg carrying members directly to concrete or steel joists or beams, they shall be of the following sizes: TYPE OF AREA CONSTRUCTION SUPPORTED SIZE OF HANGERS p 2 sq. ft., max. No. 10 W. Or M. gage r. J galvanized wire c e e ..................................j 16 sq. ft., max. No. 3 W. Cr M. gage l. galvanized wire Bar loists.................................... .... 2 strands of No. 14 W. Or M. gage gal Steel beams .................................. .... vanized wire Special clips NOTE.--inserts or other devices of eoual strength may be substituted m lieu of the above. For supporting mam runners of suspended ceilings, they shall be not less than the following sizes: AREA SUPPORTED SIZE OF HANGERS 12 sq. ft, mox.................... 3/16-m. round, mild-steel rods or No. 6 W. Cr M. gage golvamzed wire 16 so. ft., max.................... 7/32-m. round, mild-steel rods or No. 5 W & M gage goivomzed wire -5 sq. ft., max.................... I bv 3/1 6-m. rlqrs NOTE.--it is nighlv recommended that oil rod hcngers be protected wim a galvanized or cadmium cbOTing and rhat flat hangers be similarly coated or ptotecrea with a rust-mmbitive paint. DISTANCE CENTER TO CENTER OF MAIN RUNNERS SIZE OF CROSS FURRING MAXIMUM SPACING i. j Vi-m. pencil 'ods or \ Ud ro 2 ft.................................................1 i/A-m. cnannels j 12 in. \ pencil rods or I Up To 2 .................................................I 3u-n. cnanne.s , 19 m. .Up to>2 *ft*. a6 m,,..................................... ^I 33/-sj --imn.. pcheanncinl elrsods or l, 12 m. Up to 3 ft................................................ J'Jr-m. cold- or hot-roiled channels Up To 3 ft. 6 in...................................... 3/i-m. cold- or hot-rolled channels Up to 4 ft................................................ 3/4-m. cold- or hot-rolled channels Up to 4 ft................................................ I -in cold- or hot-rolled channels * Up to 4 ft. 6 m...................................... I -in. cold- or hot-rolled channels Up to 5 ft................................................ I -in, cold- or hot-rolled channels 23'/2 m. 19 m. 16 in. 23's2 in. 19 in. 12 in. NOTE.--Other shapes of hot-rolled or cold-rolled members of equal strength moy be substituted in lieu of the above. Cross furring sncil be securely attached to the main runners ov soecial clips or bv nor less than 2 sTrarxjs or No. !o W. 4 gage galvanized wire or equivalent attachments. f if STEEL STUDS FOR SOLID PLASTER PARTITIONS 20. Steel studs for solid plaster partitions shall be of such size and number and so located as to provide solid backing at all corners. Thev shall be set to the required dimensions, properly aligned, made plumb and true, securely anchored to the floor and ceiling construction and temporarily braced. Studs adjacent to openings sholl be, doubled and securely anchored to the frames or bucks. Heads of openings shall be adequately reinforced. metal Wall furring 21. ialfcAttachments shall consist of nails driven securely into concrete or into masonry joints, or short pieces of 3/a-in. channels used as anchors driven into masonry joints. They shall be spaced not to exceed 2 ft. on center, horizontally, and in accordance with the spocing of horizontal channels, vertically, and sholl project a proper distance from the face of the wall to permit ties to be made. NOTE.---Where damp-proofing has been damaged, in installation of at tachments, it shall be pointed wirn the same material before proceeding with rh^-instailation of the furring. (b) Horizontal Members shall be not less than M-in. hot- or cold-rolled channels. They shall be spaced not to exceed 4 ft. 6 in. on center with the lower and upper channels not more than 6 in. from the floor and ceiling, respectively, and not less than Va in. from the face of the wall. They shall be securely tied to attach ments with No. 14 VV. & M. gage galvanized wire or with 3 strands of No. 18 W. & M. gage galvanized soft annealed wire, or equivalent devices. (c) Vertical Members shall be not less than 3/-in. hot-rolled or cold-roiled channels. They shall be spaced in accordance with requirements far spacing of supports in Table I (Section 18 (a)). They shall be securely tied to horizontal members with No. 14 W. & M. gage galvanized wire or saddle tied with 3 loops of No. 1 8 W. & M. gage galvanized soft annealed wire, or equivalent devices, at each crossing, cna securely anchored to the floor and ceiling construction. Where furring is a considerable distance from the face of the wall, channel brcces to the wall shcil be provided approximately 2 ft. on center, end, where the height exceeds 16 ft., speciol truss bracing shali be provided to prevent concen tration of load on the floor construction. NOTE.--Special devices which ore the eauivafent of, or better than, the noil or cnannei attachments mav oe used m lieu thereof. Soecial devices, securely arrocned 'o concrete or masonry, m lieu of horizontal memoers, may be used for support of vertical members. (d) Band-iron Furring shall be 34-in. or 1-in. crimped ond pointed band iron not lighter than No. 22 U. S. gage metal. Such furring shall be stapled to the wall with brick staples not more than 24 in. on centers. Soacing of band-iron furring shall not exceed 16 in. on centers. The wire or metal lath sholl be stapled over such band-iron furring with staoles providing a penetration cf not less than 3,4 m. into rhe masonry. WORKMANSHIP 22. All metal construction and lathing shall be erected so that finished plaster surfaces may be true to line, level, plumb, square, curved, or as otherwise required, without excessive thickness of plaster. Standard Spacificaiiont for SAND FOR USE IN PLASTER8 A.S.T.M. Designation: C35-39. Adopted 1939* This Standard of the American Society for Testing Materials is issued under the fixed designation C 35; the final number indicates the year of original adoption as standard or, in the case of revision, the year of last revision. QUALITY OF SAND.--It is recognized that for certain pur poses satisfactory results may be obtained with sands not con forming to these specifications. In such cases the use of sand not conforming to these specifications may be authorized only under special provisions bosed upon laboratory studies of the possi bility of designing a mixture of materials to be used on the job that will yield plaster equivalent in auality to the specified mix ture made with sand complying with these specifications in all respects. Definition - 1. Sand1 for use in plaster shall consist of fine granular ma terial composed of Herd, strong, durable, uncoated particles which are free from injurious amounts of soline, alkaline, organic, or other deleterious subsrances. Organic Impurities 3. The sand when subjected to the colorimetnc test for organic impurities shall show a color not darker thon the standard color, unless it is shown by adequote tests that the impurities causing the color are not harmful m plaster. Methods of Testing 4. The properties enumerated in these specifications shall be determined in accordance with the following methods of test of the American Society for Testing Materials: la) SIEVE ANALYSIS--Standard Method of Test for Sieve Analysis of Fine and Coarse Aggregates (A.S.T.M. Designation: C 136). lb) MATERIAL FINER THAN No. 200 SIEVE.--Standard Method of Test for Amount of Material Finer than- No. 200 Sieve m Aggregates (A.S.T.M. Designation: C 117). Grading (Sieve Analysis) 2. (o) Sand for use m plaster shall be uniformly graded from fine to coorse within rhe following limits: percentage retained MAX. MIN. Retained on Sieve: No. 4 l 47$0-rmcron) No. 9 (2380-microni No. 30 < 590-mcroni No. 50 ( 297-micron) No. 100 ( 149-micron) 0 10 0 30 15 95 70 95 (b) The amount of material finer than a No. 200 (74micron) sieve, shall not exceed 5 per cent. (c) The sieves shall conform to the requirements of the Standard Specifications for Sieves for Testing Purposes (A.S.T.M. Designation: El I ' of the American Society for Testing Materials. (c) ORGANIC IMPURITIES.--Standard Method of Test for Organic Impurities in Sands for Concrete (A.S.T.M. Designation* C 40). 1 Under the standardization procedure of the Society, these specifica tions are under me lOint iunsdiction of the A.S.T.M. Committee C-7 on Lime and Committee C-l I on Gypsum. : Prior to their present adoption as standard, these specifications were Published as tentative from 1921 to 1925. being revised m 1924 and 1925. Thev were adopted in 1925. revised m 1930, but withdrawn and repub lished as tentative in 1936. These specifications ore m effect a revision and consolidation of. and replace the former Standard Specifications for Sond for Use m Gypsum Plaster lA.S.T.M. Designation: C35) ond the Tentative Specifications tor Sand for Use in Lime Plaster (A.S.T.M. Designation: C 66 - 31 T), which specifications were accordingly discontinued m 1936. 5 The term sand is defined >n fhe Standard Definition of the Term Sand ' A.S.Tm. Designotion: C 58) of the American Society far Testing Mate rials. . 40 YEARS OF PROGRESS THROUGH RESEARCH BBQ12 2116 ORIENTAL STUCCO AND FINISH Factory mixing of Exterior Stucco and Interior Finish insures uniformity of color and mix. Only water is added on the job. ORIENTAL* EXTERIOR STUCCO ADVANTAGES Streoking, due to insufficient mixing of stucco "on the job" is eliminored with USG factory-mixed stuccos. With job mixing, proportions of moteriols used ore likely to vary, producing stuccos of varying quolities. With factory mixing qualify is always standard. Uniformity of color in successive batches is obtained sc that joinings between seporofe applications will not show if proper precautions are taken. USG Orientol Stucco is water-resistive and its waterresistance ond strength increase with age. The minerol colors do not fade, nor are they affected bv the other ingredients used to make stucco a plastic material. Setting time is slow enough to provide a sufficient inter val between application and set to permit smooth-troweled, stippled, sponged, rough cast, period textures or spatter finishes. Since only woter is odded, time is saved on the job. COLONIAL Liflht stipple-- troweled liphtly to produce highlights COVERING CAPACITY Base Coot--The approximate covering capacity of one ton of Oriental Exterior Stucco Bose Coat (scratch and brown coats) under overage conditions, is as follows: Plastering Brick ond Metal Surface cloy file . lath Wire fabric 1 Cement and cinder tile Concrete i Sq yd. | per ton 20 to 25 , 25 to 30 , 22 to 26 | 20 to 22 20 to 25 OAK BARK Vertical brush ing -- light dosh of same color--4oshed spots flattened with trowel Finish Coat--One ton of Oriental Exterior Stucco, !4 in. thick, will cover from 150 to 200 sq. yds., depending on the texture selected. APPLICATION Oriental Exterior Stucco should be applied over U5G Exponded Metal Stuccomesn. weighing not less than 1.8 lbs. per sq. yd., or USG Self-Furring Diomond Mesh Metol Loth, weighing not less thon 3.4 lbs. per sq. yd. MODERN CALIFORNIAN Stippled-- medium heavy dash--flat tened vigor ously with trowel ORIENTAL INTERIOR FINISH Orientol Interior Finish supplies similar beouty in texture ond color for interior plastered surfaces It moy be floated to various degrees-of coarseness by varying the float used. It may be textured with stippling brushes, sponges, brooms ond other tools to resemble the illustra tions of Textured Oriental Stucco on this poge. Spots of Orientol Interior Finish m contrasting color moy be ap plied at random to the wall ond blended info tne surfoce with floot or wadded buriop, Orientol Interior Finish will cover 250 to 300 yords per ton depending on the texture used. 'Rra Ttutlr Mart- VERTICAL CRAIN Vertical brush ing--flattened with vertical trowel strokes UNITED- STATES GYPSUM COMPANY i ii RIENTAL COLORS ~. ^ *v--! Y'-, \ - ;'?,-c'.VWT */XV-VA/n-Vl v- ' '* ^1'f ' i c.*''_ " /.V'.'v,?1: V w;rr/-;v, * m-'*:- r'vl:, . r-A,.;.'nw . - - Y,`- ,'vO *c v*/ ' .f %`iV; %%^ BB012 2110 41 SHEETROCK THE FIREPROOF WALLBOARD DESCRIPTION AND TYPES What It It--Sheetrock, composed of a rugged core of gypsum en closed in tough paper, is an all-purpose, fireproof wallboard. When applied, it produces a fmisned surface ready to be decorated i for predecorated types, see pages fifty and fifty-one). Used in new buildings, nailed directly to framework, for all walls and ceilings; and in existing structures for remodeling. The Vi-in. thickness is ideal for application over old plaster surfaces. The joints between boards may be left frankly visible, may be covered with batten strips or mouldings of various sorts, or may be completely concealed. Sheetrock will take any form of deco ration including wallpaper. Sheetrock produces a strong, rugged wall or ceiling which is completely incombustible. A standard constructon material, accepted and approved as such for over 20 years. Recessed-Edge Sheetrock--Recessed-Edge* Sheetrock used with Perf-A-Tape* provides an improved permanent reinforcement at the joint between boards and simultaneously conceals the joint. Because of the "channel" prepared by the recessed edge, PerfA-Tape reinforcement and the cement used when finished are flush with the face of the board, eliminating any bulge or shadow to indicate the presence of the joinr. The strength of the joint is as great as that of the board and, consequently, it will permit horizontal application of the boards (the long edge parallel to the floor) in walls and similar appli cation across the joists in ceilings without the necessity for, or expense of, headers. Such horizontal construction effects many economies and as well produces a stronger construction more resistant to building frame movement. Recessed-Edge Sheetrock may also be applied vertically (long edges parallel to supports). Insulating Sheetrock--Any type of Sheetrock, decorated or plain, may be obtained with a sheet of bright metal foil attached to its back surface, providing at once both an insula tion value against heat loss or entrance, equivalent to that of '/z-in. fiber insulation board, and a highly efficient vapor bar rier. The coefficent of heat conductivity is approximately .66 B.f.u.'s per hour, per square foot, per degree difference in tem perature. Finishes--Regular Sheetrock is furnished in a cream, almost white finish for the exposed face. There is also available Wood Grained Sheetrock in Walnut, Knotty Pine and Bleached Ma hogany which arc described and pictured on pages fifty and fiftyone and Sheetrock Tile Board on page fifty-three. Recessed - Edge offers a willboird construe* tion that makes possible strong* or, smoother, and better-look* in g wallboard jobs. When sheets are nailed in place, recessed edges form a channel at each joint. Channel is filled with special ce ment, quickly and easily ap plied. SIZES AND RELATIVE COSTS Recessed-Edge Square Edge Thickness Width Length Relative Cost ** Vg. Vi in. 4 ft. 6. 7, 8, 9, 10. 1 1 and 1 2 ft. i Vi, in. 4 ft. 6. 7, 8, 9. 10. 1 1 and 1 2 ft. i Walnut Finish Knotty Pine Finish Bleached Mahogany fa in. 4 ft. 6, 7. 8. 9 and 10 ft. ii Insulating Any of the above are available w fh insulating foil back in sizes given at slight ac ditional cost. Tile Board in. 4 ft. 6, 7, 8. 9 and 10 ft. in *Rtg. Trade-Mark. ro"j" morearei least expensive; "11" indicates more expensive than UNITED STATES GYPSUM COMPANY Pert - A - Tape, strong, perfo rated fiber, with chamfered edges is embedded in cement* After drying, ce ment is sand-pa pered. assuring smooth surface for any decora tion. SHEETROCK* CONSTRUCTIONS APPLICATION OF SHEETROCK "HORIZONTALLY" (Across Joists and Studding) _, Z tes t-a smcaoad Applied vWrticdiip . }' - . r-4 rtejdare fcr. J '' timce--' j its 4 5 Shutbooc AspLed Verucdip. ' " - li ^5ese Board APPLICATION OF SHEETROCK "VERTICALLY" (Long Edges Parallel to Supports) BB012 2120 APPLICATION OF SHEETROCK OVER OLD PLASTER PACKAGING: Two boards per bundle except V* in. which has three boards per bundle. *Rcg. Trade Math 40 YEARS OF. PROGRESS THROUGH RESEARCH*- U,sS GYPLAP THE FIREPROOF SHEATHING WHAT IT IS Gyplap. ' as its name implies, is a rugged, fongued and grooved, unit sheathing material. Made in large sheets Vi-m. thick, 24-in. wide and 6 ft. 8 in. or 8 ft. 0 in. long, with o tough, fireproof core of gypsum enclosed in a water- and wind-resistant, heavy paper envelope. The long edges are alternately tongued and grooved. WHAT IT DOES Gyplap is nailed directly to exterior wall studding to form a tight enclosure for the building--free from knots and crocks. Twenty-four inches deep instead of 8 inches, Gyplap sheathing stiffens the framework against overturning moments. Can be used without building poper covering, but building paper may be used when required by ordinances or lending agencies, without de stroying the price or structural advantages which Gyplop offers over shiplop. Conventional wood siding, brick veneer, stucco on metol loth, shingles or USG Glotex Asbestos Cement Siding I see pages sixty-six and sixtyseven) may be applied over Cyplap as detailed on the next page. All vertical joints are made over studding or framework. All horizontal joints are tongued and grooved. ADVANTAGES Gyplop supplies sheathing superior to wood shiplop or lower costs both to buy and opply. It increases fire protection and resistance to wind stresses. Gyplap is more easily ond accurately cut and fitted. There is no waste; one thousand square feet of Gyplap cover one thousand square feet of sheothing area, as no allowance need be made for the laos required by shiplop. Mode of rock, it will not rot, contains no sop. resin or oily materials. Gyplap is odorless. It provides no fibrous nesting material for vermin. Gyplap does not shrink, worp. or swell as wood does with atmospheric changes. Investigations of hundreds of homes where Gyplap has been m use for from ten to twelve years, have proved conclusively that there was no looseness around the noils, no rot, evidence of invasion by rodents or other vermin, no disintegration or lessening of value. PACKAGING: Not packaged. Shipped in carload lots properly piled and braced. NAILEX FASTENERS Noilex Fasteners (new ... see page 67) permit nail ing directly to Cyplap, avoiding older method requiring furring strips when wood or asphalt shingles are to be applied to the siding. 'Rl'9 Trade Mara Two Hours later: fully sheathed and ready tor bnek veneer Eight hours labor for 1524 sq. ft. of tiro* nroot sheathing. Larger buildings, more speed---lower costs. UNITED STATES GYPSUM COMPANY 1i BB012 2 i2 1 GYPLAP CONSTRUCTIONS BRICK VENEER CONSTRUCTION Metal Ties Every tl (2------- id------- Jt, Fifth Course Nailed M .. 1. .' WOOD SIDING CONSTRUCTION STUCCO ON rRAM CONSTRUCTION Stud-^ 4L I Gqplap Sheathing. uSS Self farring a`-4" Diamond Mesn Laui uss oriental Stucco--- SHINGLE. CONSTRUCTION l-stud-H* ! (J 1 (f ' Sheathing\ . furring Strips--- __' . . - i--' ^ - ~ ` - v: - . , " -r 4jj 2 ---r-^-USG Asbestos j Sr,ingles > ' -r Gyplap Sheathing . Vz Thick . 24' Vide , S'-s' ,.6'-o' Long . Nail to Studs : 4*o.c. Scale: 3/gVi'O" BBO12 2122 BETTER BRACING Two identical 8 ft. 0 m. x 3 ft. 0 in. stud walls --one sheathed with Gyplap, the other with 8-in. No. 1 Yellow Pine Shiplap--were tested comparatively by insert ing o hydraulic jack be tween them of their top plates. Shown at right is the deflection from the perpendicular in the wood sheothed panel as comoared with that of the Gyplap panel under identical loading. 40 YEARS. OF PROGRESS THROUGH RESEARCHr NAIU ANU NAILING' STANDARDS FOIT US6 MATERIALS NAILS FOR LATH PRODUCTS Material to be Applied Xail Type Length Gauge Head Point Xo. Per Lb. Maximum Minimum Spacing Penetratior Rocklath Metal Lath flat-expanded or flat rib (walls) Ceilings y Rib and Sheet Lath - Anv lath for Exterior Stucco Weatherwood Ins. Lath y Weatherwood Ins. Lath 1' Blued 4d. Common* or 1' Kfg. Gaiv. or blued 6d. Common* iy Rfg. 6d. Common* or iy Rfg. 6d. Common* or lK' Rfg. Blued Plaster Board Blued Plaster Board IVs iys V 2* IK' 2* IK' 2iy We . W' 13 ny 10 liK Vs flat w ! 1 Smooth Diamond 10 HH 10 r ii K 10 13 13 He' He Long He' Diamond Long He' Diamond 448 316 232 174 190 174 190 174 160 448 241 4' < 7" T T r i 7" 7 5M' sy H" H' W r r ik* iy iy iy USG Furring Runners 6d. cut case hardened Com. 2' 160 12'-18' Runner Track (Trussteel Studs) Oil quench hardened concrete stub nails. y All common nails dri'-en to minimum penetration and bent over two strands of lath (walls) and three on ceilings. NAILS FOR BOARD PRODUCTS : Maximum Spacing y&y Sheetrock j 4d. Cement ! 1 Coated I iy : 14 y flat y Sheetrock applied parallel to supports (Vertical). i 5d. Cement j iy 13K y flat ! Coated j , When applied across supports (horizontal) maximum spacing is 4*. Edges & Ends 3'f . 488 Intermediate ! Walls 9' t Ceils. 6' 364 1 Edges & Ends 3'f ! Intermediate ! Walls 9' : Ceils. 6' Sheetrock Tileboard Wood Gram Sheetrock 1 4d. Cement ; iy ; 14 ! Coated i j 4d. Finishing ; ! Natl ! IK' 15 y flat j Brad I Head 1 jEdges: in every squaref 488 ; Intermediate: in every | other square. i Same as y Sheetrock ; 584 i but nail at 45 angle. Gypiap j Barbed Gaiv. j I Roofing ! iy i OK ' He' 1 147 1 5' Max. on ail 1 supports. N'otes: fAU edge and end nails not less than y from edge of board. Do not stagger nails at abutting edges of adjacent boards. UNITED STATES GYPSUM COMPANY 2tOQa PLASTERING COSTS MATERIALS AND LABOR PER HUNDRED YARDS USG PLASTERS AND FINISHES BASE COAT PLASTER-ON-LATH Ground* Wood Lath M" NEAT GYPSUM PLASTER Metal Lath M" Rocklath fai Weatherwood Insulation Lath <0l) H' I' Brick or Tile Pyrobar ai ai M' w Wood Lath w SANDED GYPSUM PLASTER Metal Lath Rocklath Weatherwood Insulation Lath M" H" i' Brick or Tile M" Pyrobar WOOD FIBRE GYPSUM PLASTER Wood Lath Metal Lath Rocklath ; Weatherwood 1 Insulation Lath H' mt Mr Hw r BONDCRETE Concrete 3r Brick or Tile Metal Lath ORIENTAL Paper Backed EXTERIOR Wire Fabric BASE COAT] I Cinder Block ... Concrete Float_________ Trowel PREPARED I Oriental Int. FINISHES i Oriental Ext. Sabimte JOB MIXED I Gauged Lime Puttvi FINISHES Sand Float KEENE'S CEMENT FINISHES 1. Extra Hard ! 2. Medium : 3. Hard 4. Sand Float 5. Quick Troweling 1 ai Unfibred plaster. Pla.-tor Thick- Lath 1450 i; pcs. 105 a .* yds. 900 h' sq. ft. 900 h* sq. ft. 900 H'-r sq. ft. i,,, 0 SoOsq.ft. 1450 V pcs. 105 5 :* .5 yds. ... 900 sq. ft. Vi" H'+ 900 sq. ft. 900 sq. ft. >2' '. M" yy x/r Mr- Mr to r Mr to 1' mt to 1' M' to r 355 sq. ft. 1450 pcs. 105 yds. 900 sq. ft. 900 sq. ft. 900 sq. ft. 900 sq. ft. 105 yds. 110 yds. 900 sq. ft. mt 900 to I' sq. ft. Planter .uid Labor Plasterer Ton?) YrU.i Mixing Hrs , 0.6 1.0 3 hrs. S hrs. 0.9 1.8 12 hrs. 12 hrs. 0.5 1.0 5 hrs. 5 hrs 0.5 1.0 3 hrs. S hrs 0.6 1.5 0.425 i 1.0 S hrs. 8 hrs. 8 hrs. 8 hrs. 1.5 0.0 8 hrs. 8 hrs. 2.5 0.0 12 hrs. 12 hrs. 1.3 0.0 S hrs. S hrs. 1.3 0.0 S hrs. S hrs 2.0 0.0 3 hrs. S hrs. 1.5 0,0 3 hrs. S hrs. 1.1 0.0 S hrs. S hrs. 1.7 0.0 12 hrs. 12 hrs. 0.85 0.0 3 hrs. S hrs. 0 85 0.0 8 hrs. S hrs. SAND FOR PLASTER Sand is used in piaster to reduce cost nnti to make the plaster easier ro apply. The sort 01 *:mu a#ed is very important. Each gram should be saar? and angular in nature. The sues oi the grains must be maintained within specified limits if the pasterer a to produce a good job. The American Society for Testing Materials has established a very exacting specification tor sand. The United States Gypsum Company believes that it should be in every architect's specification and that the use oi specification sand soould be insisted upon on every construction job. A simplified form of that specification follow*: SAND--Sand used for plastering in which gypsum is employed shall consist of fine granular material, naturally or artificially produced by the disintegra tion of rock containing not less thaa SO per cent by weight of silica, feldspar, dolomite, magnetite or calcite. and shall be tree from saline, alkaline, organic or other deleterious substances graded rrorn fine to coarse within the following limits. Percentage retained Maximum Minimum Retained on a No. 4 sieve........ Retained on a No. S sieve........ Retained on a No. 30 sieve........ Retained on a No. 50 sieve........ Retained on a No. 100 sieve........ <T; un so% rt 0^ 13^0 70~,-j 95^ Weight removed by decantation. Not more than oc"u The sieves shall conform to the requirements oi the Standard Specifications for Sieves for Testing Purposes of the American Society for Testing Materials (Designation: Ell). 1.0 4.0 to 5.0 4.0 to 5.0 4.0 to 5.0 40 to 5.0 4.0 to 5.0 0.0 3 hrs. S hrs. 0.0 IS hrs. 20 >4 hrs. 0.0 IS hrs. 2014 hrs. 0.0 IS hrs. 20'4 hrs. 0.0 18 hrs. 201-4 hrs. 0.0 IS hrs. 2014 hrs. 0.40 0.0 hrs. 110 hrs. 0.31 0.0 l 5 hrs. 110 hrs. 0.30 0.0 o nrs 110 to i 15 hrs. 0.60 ! 0.0 i 12 hrs. 124 brs. 1.00 ! 0.0 i 7 hrs.: 11 nrs. { 60 0 16 <eu. it. 4 hrs. I 3 hrs. 5 hrs 110 hrs. 1 0 0751 0.150 1 0.0 0.0 I 0.0 I 0.0 5 hrs.! 12 hrs. 5 hrs. i 12 hrs. 5 hrs. 112 hrs. 001 ft. I 6 hrs. 12 hrs. 5 hrs. 110 hrs. 0.0 i 0.0 lrt 22 0.0 , 0.0810.20 0.0 i 0.0251 0 20 0.0 0.1 0.20 i 00 j . : 0.20 PLASTER GROUNDS Plaster grounds are used wherever plaster is used. They serve several purposes in construction. First, they fix the thickness of the piaster. Second, they provide a use ful wooden member to which trim can be nailed. With few exceptions the wood grounds, wmca are simply strips of wood ot a specified thickness, are nailed directly to the siuds or wired to metal studs berore lath is applied. Their aimeaMons, therefore, are governed bv two things, toe thickness or the lathing material used, and the thickness of plaster coat desired. .Should we have a lathing material taick. such as Weatherwood In sulating Lath, and desire a H* oi plaster over it. mr grounds would be l'. *Tuh `i' Rocklarh the ground would be ',* thick if a half inch of plaster u to be applied. Thus to get the correct ground sue t whan t ne grounds are nailed to studdmg) simply add the thickness of the plaster base to the thickness of plaster desired. COPYRIGHT 1940 UNITED STATES GYPSUM CO. BB012 2124 47 40 YEARS OF PROGRESS THROUGH RESEARCH PREDECORATED WALL AND CEILING BOARDS WEATHERWOOD TILE AND PLANK Weatherwood* products build; insulate; decorate; and quiet sound; in one low-cost operation. Made of wood fibres, felted into board form and knit together by a process which permits accurate control of strength and insulating value. Due to diversity of sizes, many decora tive effects are obtainable. Weatherwood requires no decoration, but it can be painted to achieve effects other than those permitted by its own coloring. ADVANTAGES The insulating value of 1 in. of Weatherwood is equal to a I 5-in. brick wall, 3 in. of lumber or 37 in. of concrete. It possesses effi cient sound absorbing properties. Weatherwood is strong. Its rigidity adds structural strength. The tough surface resists scuffing and marring. Tests on Weatherwood Hi-Lite finish gave an average light reflection factor of 70%. Economy is provided since all these advantages are combined in one material and are, therefore, applied at one time. Painting is economical. Weatherwood absorbs paint slowly, requiring less than similar fibrous products. Conforms to Government Specifications--Weatherwood meets all re quirements of Federal Specifications LLL-F-32la -- Insulating Fibre Board. ACOUSTICAL TREATMENT Special low density Weatherwood tile is available where additional sound absorption is required. USES Weotherwood is used in a wide variety of buildings, including homes, stores, offices, theatres, churches, auditoriums, restaurants, taverns and mortuaries. COLORS AND TEXTURES Weatherwood is made in shades of ivory, grey and tan, to har monize with most interiors. These colors are designated: as HiLite; Blendtex, a mixture of greys and tans; and Grey-Tan. Tex tures are: Regular, which is a plain but not ironed finish; and Textured, a slightly roughened finish. TILE Size 1 2 x 1 2 in. 12x24 in. 1 6 x 16 in. 16 x 32 in. ; Thickness Vl in. regularly; 1 in. on order ! Color, Surface Vx in. Hi-Lite in Textured or Regular; Edge Ogee 1 in. Hi-Lite Tex tured only PANELTILES These sizes may be cross-scored* * 1 2 x 24 in. 16x32 in. 24 x 48 in. 3/4 in. Hi-Lite or Blendtex, Textured only : Ogee 1 x 4 fr. 4 x 4 ft. 2 x 8 ft. 4 x 8 ft. PLANK 3/i in. Hi-Lite Textured only Ogee 8, 10. 1 2 or 16 in. wide x 6. 8, 1 0 or 1 2 ft. long. Vl in. BOARD PANELS Blendtex Textured only; Hi-Lite on order Ogee Long Edges 4 ft. wide x 7, 8, 9, 10 or 12 ft. long \sf. Vi in. regularly; 1 in., 1 Vl in. or 2 in. on order Ki-Lite in Regular; Grey-Tan in Tex tured; Hi-Lite Textured, on order only Squarej **CROSS SCORED TILE Tile and Paneltile indicated may be cross scored to represent two square tiles. Advantages are that two tiles are applied with the speed of one and they may be applied without regard to joist spacing. BB012 212^ USG Self-Spoeing, Floating Joint with Og# Edge. Cross scored tile applied with out regard to joist spocing. UNITED STATES GYPSUM COM PANT Weothenrood Tile applied with adhesive* to flat surfaces. _. 'Sep . vad* BB012 2126 PACKAGING: Tiles: 8 to 32 pcs. per bundle. Paneitiles: 4 to 12 pcs. per bundle. Plank: 12 pcs. per bundle. 40 YEARS OF PROGRESS THROUGH RESEARCH il. ,6UfS SHEETROCK GRAIN BOARDS USG Sheetrock* Grain Boards present the appearance of wood with the advantages of gypsum. The graining, knots ond coloring peculiar to Bleached Mahogany, Walnut or Knotty Pine ore transferred to the face of the Sheetrack by photographic and printing processes, permitting faithful reproduction. The final finish is a foctory applied lacpuer which protects and preserves this surface. The durability and non warping qualities of Sheetrock are present in Sheetrock Gram Boards. They will not burn nor support combustion, thereby adding fire pro tection. FINISH AND CLEANABILITY One of the most important advantages of Sheetrock Gram Board s That it can be used without decoration. Where excessive wear is expected, or a glossy finish is desired, the panels may be waxed or varnished, cfter the application cf a coat of shellac. Grom Boards are easily cleoned with a mild soap ond water solution. ECONOMICAL . . . QUICKLY APPLIED The low cost of Sheetrock combined with the saving in decoration cost make Sheetrock Grain Boards economical. Further sovings accrue through ease and speed of application. Since Sheetrock Grain Boards are available m large sire sheets which reach from floor to ceiling and span three spaces between studs pieced 1 6 inches on centers, application is rapid. The boards ore easily nailed and cut, reducing erection time. SIZES AND RECOMMENDED USES Sizes, 4x6. 4x7, 4x8, 4x9, and 4x10 feet. Thickness, Vb m. Approximate shipping -weight, 1 500 pounds. Sheetrock Gram Boards are used in libraries, dens, hallways, finished bosemenf and attic rooms, shops, offices, restaurants, clubs and display rooms. MOULDINGS Although Sheetrock Grom Boards moy be used without panel strips, wood paneling is more faithfully simulated by using a typical panel design. Such des'gns can be simple and inexpensive. An almost unlimited variety of effects con be obtained. Stock ond special mouldings, in fact virtually anything available for use over wood paneling, can be used with Sheetrock Gram Boards. Mouldings ore stained to harmonize with the board, adding authenticity to the appearance of the Sheetrock itself. Picture moulding, cove moulding, chair rails, plate rails and base assemblies may be used. Interesting effects hove been obtained with chromium ond other metallic mouldings. PACKAGING: 2 pieces per bundle. Bleached Mahogany Finish BB012 2127 UNITED .STATES GYPSUM COMPANY Walnut Finish Knotty Pine Finish BB012 2128 "Rumpus.room" in Wolnut Finish with ploin Shaatrocfc and Taxolita ovar firaplaca for mofion-pictwra jcraen. Knotty Pino Finish odds roolism to 8oy's room. ,, 40 YEARS OF PROGRESS THROUGH RESEARCH cf WEATHERWOOD HARDBOARDS Made of long, strong wood fibres interlaced to form o material crossbraced in all directions. Board is moulded under tremendous pressure and intense heat. The result is dense, hard, strong boards with two smooth, usable sides in tones, of brown, one slightly darker than the other. ADVANTAGES Weatherwood'1 Hardboards may be sawed, cut. glued, nailed or lommoted. They are flexible and con be bent to small diameters. Mode m large sneets, they are quickly applied. Weatherwood Hardboard for interior use does not need any protective paint, varnish or wax treatment. When used outside, or where the natural color or surface gloss is not suitable, Weatherwood Hordboard may be painted, stomed, enameled or finished in any manner. USES Principal uses are wainscots, walls, ceilings, folding partitions and sliding panels. FOUR TYPES Densboord--Lightest weight, least expensive Hardboard. Sheet sizes: 4 ft. x 2, 3, 4, 6, 8, 9, 10 and 12 ft. Vi. in. thick. Structoboard--Denser than above but less dense than Hardboard below, rigid and economical. Sheet sizes: 4 ft. x 2, 3, 4, 6. 8, 9, 10 and 12 ft. Vi in. thick. Weathenrood Hardboard--Hardest, densest untreated Hardboard. Scuff-resistant. Sheet sizes: 4 ft. x 2, 3, 4, 6, 8, 9, 10 and 12 ft. '/s, 3/i* or Vi in. thick. Treated Weathenood Hardboord--Some general characteristics as the other USG Hardboards but harder and denser. It resists water absorption. Made plain or with 4x4 in. indentations to give it o file-like effect. Especially suited for high humidity environments: bathrooms, kitchens, laundries, etc. Treated Weatherwood Hardboord is Vs in. thick. Sheet sizes: 4 ft. x 2, 3. 4, 6, 8, 9, 10 and 12 ft. Weatherwood Tile Board is Ys inch thick, 4 x 12 ft. sheets. PACKAGING: Densboard, Structoboard, Vs in. and Vt in. Hardboord: 48" x 6", 8', 9', 1 O', 12'................................................. 6 pcs. per bdl. 48" x 2', 3'. 4'..................................................................... 10 pcs. per bdl. Vi" Hardboard, 48" x l2'-0"...................................... 3 pcs. per bdl. Vs" Treated Hardboard, 48"x 8', 10', or 12'. . . 6 pcs. per bdl. BB012 2129 USG Hordboerdi are easily cut and bant to small diamatars. , UNITED STATES GYPSUM COMPANY Flexibility of USG Hardboards suggests new design possibilities. If SHEETROCK TILE BOARD USG Sheetrock Tile Board produett a cream colored finished wall or wainscoting with tile-like impressions i/i inches square. Since it is mode of gypsum board it will not warp or buckle, and it is incombusti ble, adding lire protection. RECOMMENDED USES Sheetrock Tile Boord is used for bathrooms, kitchens, lavatories, dairy buildings, restaurants, in fact, any place where a tile design is required. Ideal for wainscots. The large sheets make joints be tween boards unnecessary in small rooms. EASILY DECORATED It can be decorated with most wall finishes. However, when paint or enamel are used--a solid color for the "tiles" and a lighter color for the joints -- the appearance of ceramic tile is produced. Designed for economical painting, the closely knit calendered surface of Sheetrock Tile Board saves both lobor and paint. ECONOMICAL Sheetrock Tile Board, low in first cost, with its close simulation of ceramic tiling and inherent speed in erection, permits faster com pletion of any room where a tile effect is desired. INSTALLATION Readily cut to fit any space, the large sheets are nailed directly to studding or joists and the nail heads are finished, unnoticeably with Sheetrock finisher or joint cement. In large rooms, where joints between boards are unavoidable, the joints may be finished with Perfatape, and concealed as perfectly as those of plain Sheetrock. SIZES Boards ore made in a standard V4-in thickness and 4-foot width in lengths of 6, 7, 8, 9 and 10 feet. PACKAGING: Two pieces per bundle. BB012 2130 Point covers well over Tile Boord. Odd-sized pieces ore easily cut from standard sized boards. 40 YEARS. OF PROGRESS THROUGH* RESEARCH PYROBAR GYPSUM TILE Fen partitions and furring; beam, girder and column fireproofing USG PYROBAR GYPSUM TILE FOR PARTITIONS AND FURRING And for Fireproofing Structural Steel Pyrobar0 Partition Tile Made in furring, solid and hollow types. Pvrobar Par tition Tile are machine-made and moulded extremely accurately. All are scored to receive plaster except when specially ordered, when smooth surfaced tile con be fur nished. For sizes, weiglrts, etc., see table at top of opposite page. ADVANTAGES 1. Fireproof a. Gypsum is incombustible. Adds no fuel to flames. b. Gypsum cannot pass high temperatures; hence: 1. Keeps heat from heat vulnerable steel. 2. Confines ignition temperatures to room of their origin, effectively restraining the growth of a building tire. c. Gypsum constructions will not expand under fire exposure suf ficiently to wreck themselves or dislocate fire-weakened steel. Since they expand not through some 1800 but through the low gradient from room temperature to 212 regardless of the intensity of the fire. d. The fire resistance ratings of gypsum constructions have been established by numerous laboratory tests and proved by observed behavior in many fires; their high degree of protection is a matter of record. e. Under fire exposure, gypsum calcines (loses its water of crys tallization) progressively from the exposed face. The calcined por tion, soft, spongy and heat insulative, clings to the face further retarding the progress of calcination. Regardless of the fire tem perature, the temperature in a protected room or of protected steel can not exceed 212 F. until the gypsum is calcined clear through. The rate of calcination is very slow. A 3-in. Pyrobar partition pro tects for 2 hours against standard test exposures, a 4-in. partition for 4 hours. 2. Less Weight Clay tile, as used for fireproofing, weighs from 239e more for 2-m. split furring to 50To more for the much used 3-in. hollow non-bearing tile than Pyrobar Gypsum Tile (figures calculated from data in A.S.T.M. specifications for both materials). The stone concrete protection for an I-beam whose 6-in. flange is 8 in. below the structural floor it supports weighs 83.4 lbs. per running foot of beam. Pyrobar beam and girder protection for the same beam weighs but 26 lbs. per running foot. The concrete pro tection weighs 227To more. 3. Large Economical Units The large economical units, laid in 31ockset Cement (see page thirty-one), use less mortar as they have fewer joints, require less labor, speed completion. Inherently economic, these materials supply maximum utility. 4. Easily Cut and Fitted Pyrobar Gypsum Tile are quickly cut with a saw to fit any con dition. They do not shatter when cut. eliminating breakage waste. Pipe and conduit ciiases are accurately cut. 5. Excellent Plaster Base Pyrobar Gypsum Tile are cast in accurately dimensioned straight true molds. They do not warp, twist or shrink when setting. There fore. Pyrobar Tile are true to dimension, make straight walls with plane faces, saving plaster. The bond between gypsum plaster and Pyrobar Tile has a factor of safety of 173. ff^ 6. Fit All Beam and Girder Shapes Pyrobar Beam and Girder Tile Pvrobar Beam and Girder Tile are designed to accommodate all standard steel shapes as rolled or built-up girders with a minimum number of tile shapes, reducing the number of fireproofing shapes on the job, cutting costs and speeding completion. For beam and girder protection, the flange of the beam or girder u protected by the most suitable of the four tyres shown above and detailed on the opposite page; the webs are .covered with Pyrobar Partition Tile supported as shown in the details. For column protection, Pyrobar Gypsum Partition Tile, of proper thickness, are laid up around col umn m log-caom fashion; all short pieces max be built m. 7. Availability Pyrobar Gypsum Partition, Furring and Fireproofing Tile are available in like excellence, made to the same standards, presenting identical usefulness and fire protection, irom each of a string oi manufacturing mills stretched from coast to coast. Architects specifving Pyrobar can ignore design requirements imposed by local aggregates, hard or soft burned tile, etc. _ 'Reg. Trad* Mark UNITED STATES. GYPSU, COMPAN Y C IS S tO Q Q PYROBAR PARTITION AND FURRING TILE--SIZES AND WEIGHTS Size of Pvrobar, Gypsum Tile, In. Recom l mended ! heights for each size i 1 f 2 in. Spiit. . . 1 Hxl2x30l 2-in. Split .. 2x12x301 2-in. Solid. . . .2x12x301 3-in. Hollow . 3xl2x30l 3-in. Solid...... .3x12x301 4-in. Hollow .... 4x12x301 5-in. Hollow 5x12x301 6-in. Hollow . . . . 6xl2x30| Furringt Furringt 10 feet* 13 feet* 15 feett 17 feet' 20 feet' 30 feet' ' i 1 1 1 Weight tile per sq. ft., lb. 4.9 6.4 10.0 10.0 13.0 13.0 17.2 19.0 'Underwriters' Laboratories recommendations. Weight mortar per sq. 11.. lb. 1 I Weight , Total | plaster j weight : J one side , plastered. Weight plaster two . Total | ] weight 1 1 plastered. ! per sq. It., one side. sides two sides, | lb. M in. , per sq. ft., per sa. it., ; per sq. ft., j : grounds lb. !b. lb. j Approx. mortar requirements per 1000 sq. ft. Pounds Set Fast ' Cement , Cubic yards sand 1.4 3 7.9 ....................... 1 500 0.625 1.4 3 9.4 - - - ( 600 0.75 1.5 3 13.0 6 1 16.0 ; 600 0.75 2.0 3 13.0 6 16.0 ; S00 : 1.00 2.0 3 16.0 6 ! 19.0 j 800 1.00 2.5 3 16.0 6 19.0 i 900 1.125 2.75 3 20.2 6 23.2 : 1000 1.25 5.0 3 22.0 6 25.0 l 1100 . 1.40 1 f.N'o l:nderwriters' recommendation. FIREPROOFING FOR STEEL BUILDING FRAMES Gypsum is unique as a fireproofing material in these regards: I. More protection for less weight. 2. Will not transmit high temperature. 3. Best base for gypsum plaster. 4. Fewer shapes on job, faster erection. 5. Complies with Underwriters' and Building Code Requirements. Column Fireproofing--Partition Tile are laid up in proper thick ness around column in log cabin fashion. Beam and Girder Fireproofing--(See Table 8elow). All obtain able in smooth surface for direct paint without plaster. ANGLE TILE 13-in. Lengths SHOE TILE 18-in. Lengths PYROBAR BEAM AND GIRDER TILE--SIZES AND WEIGHTS t>Xt as WHEN SIDE COVER OVER 26*\ USE 4* HOLLOW PVQOBAQ FOR HOST COURSE. 3 HOLLOW PVROBAQ CLIP Type L-34 L-45 I.-46 F H T Weight per 1m. it..lbs. 3* 4' 2 ' 15 5' 2r 18.5 4' 6' 2' 20 3' HOLLOW PYQOBAR 1 Max. Type' width jot flange F B-40 1 B-SO 1 8-65 | B-30 I 5' 6' 7 4* 9' 74' 84' 94' 104' B-10O-C (Channels) H *4' *4' *4' 44' 4*4' 1 T ; \V 1 H' 2 4' ri.' ; ! .4' 1 *4' Weight per lin. it., lbs. 12.5 13 15 16 10 BB012 2132 STRAP TYPE SOFFIT TILE 24-in, Lengths SOFFIT TILE I c \w| c CLi P tile secured to beam soffit WITH 2'/2*X 3 x `/t" PLATES IN WIRE LOOPS FOUR DLATES DE3 TILE. ^HtCKEN WIRE IMESH REINFORCING FuLl MESH r SECTION TYPI CAL INST-Lu ATiON Type , F C 5-10 S-11 S* 1 2 S-13 S-14 S-15 1 15 4' i 154' 1 H4' i (4' 1 19^' 19 4' 2 u;# j 24' 2Vim T 2* 2' 2 4* >' 2 Weight w per ha. it., lbs. 10' 13 11' 13 12' 14.5 13' 14.5 14' 16 15' 16 Type A B B-30-S B-40-S B-50-S B-60-S B-70-S B-80-S B-90-S Bu--IuOsO--sS B-IJO-S B-145-S B-160-S B-175-S 74' 84' 94' 104' 114' 124' 134' iW1s*444"'' 184' 204' 214' 3' 34' 34' 34' 34' 34' 34' 34' 34' 34' 4* 4' 4' c 34' -14' 54' 64' 74' 84' 94' 104# 114' 134* 1*4' 164' "4' D 1' 14' 14' 14' 14' 14' 14' 14' 14' 14' 2' 2' Weightl Max. perhn. 1 width it., lbs. lot flange 3 9 10 11 12 13 \4 15 16 17 U 19 294 2*> 3' 4' 5' 6' ; 8' 9' 10' 114' 13' 14' ' 16' 17.4' 40 YEARS OF PROGRESS THROUGH RESEARCH UaS MASON'S LIME MASONRY MOITAKS--WATERPROOFING--IN CONCRETEWHITEWASH . . . HIGH CALCIUM--DOLQMITIC--HYDRATED OR QUICK USG MASON'S LIME IN BUILDING CONSTRUCTION Water-tightness and durability are the criteria of quality in masonry. If thoroughly burned brick, tile, hard dense stone or concrete are used and construction is correct, excessive water penetration can occur only at joints. Lime mortars are the most effective means of providing watertight joints. Advantages of Lime in Masonry Mortar Plasticity--Lime is the most plastic cementing material. Building units must be thoroughly and uniformly bedded and joints well-filled to assure leakless masonry. The more plastic the mortar, the greater the chances of uniform distribution. Bonding Power--Lime bearing mortars adhere to the build ing units uniformly at all points and have sufficient elasticity to adjust themselves to varying stresses. They do not tear loose from the building units. Low Volume Change--Lime is the only cementitious mate rial having negligible volume change after hardening. Its high water retaining capacity prevents compacting, the important cause of leakage through vertical joints. Extensibility--This quality determines extent to which mortar will stretch before it fails in tension. Lime mortars and mortars containing lime have ample extensibility. Strength--Strength in mortar does not necessarily indicate durability. Test data indicate that mortar mixes containing lime produce mortars of ample strength. Examples of enduring qualities of masonry laid in lime are found in old structures in Europe and America. Lime in Concrete Hydrated lime is used as an admixture in concrete for its qualities of water-tightening, lubricating and physical stabiliza tion. It makes concrete watertight by increasing workability; re ducing honeycombing, stone pockets, etc.; filling forms, pre venting segregation, and reducing the relative amount of water required. High Calcium and Dolomitic Limes Quicklime or hydrated lime can be produced from either high calcium limestone or dolomite (high magnesium lime stone). In building construction, the physical rather than the chemical composition of lime is important. Therefore, either calcium or magnesium lime may be selected as the physical properties are the same. U TED STATES GYPSUM COMPANY MORTAR MIXES FOR VARIOUS TYPES OF MASONRY Masonry Type j Type of j Construction Loading Mortar Proportions (Volume) Lime; Cement; Sand 1 Common and face clay, Dwellings, garages and shale or sand-lime brick ; similar construction Any condition of loading . tor such types of con- ; st ruction . Clay or shale brick Walls and piers belotv Ordinary distributed j grade continuously ex posed | Heavy concentrated 1 to wet or damp conditions 1 Earthquake tremors j i [ 1.0:5 11:6* 1 : 1 : o* 11,6* j | ! j j Remarks Common and face clay, shale or sand-lime brick Exterior walls and piers above grade Ordinary distributed Heavy concentrated Earthquake tremors 2:1:9* 2:1:9* 2:1:9* | 2:1:5 Mortar domestic and power | plant chimneys Granite, limestone, marble. Exterior walls and piers sandstone, terra cotta iac- _ above grade ing and trtm ! Ordinary distributed Heavy concentrated Earthquake tremors 2:1 : 9r 2:1 :9* 2:1 :9* Use non-staining Portland cement and washed sand Common and face clay,: Interior walls and piers shale or sand-lime brick, I above and below grade concrete brick Ordinary distributed Heavy concentrated Earthquake tremors 2:1 : 9* 2:1 : 9* 2:1:9* Hollow clay tile, concrete Exterior walls above grade i Non-bearing partitions,ex block, concrete tile, cinder i and interior partition walls j terior and bearing walls block j i and partitions! 2:1:9* 2:1:9* 2:1 : 9* Notes' Materials to conform to current "A.S.T.M.`Standard Specifications". Mortar containing Portland cement to be used within one hour after mixing. *One volume of cement is the maximum quantity which should be used. The. sand content is to be varied in accordance with its quality in the particular market involved and its proportion may be reduced if greater mortar strength is desired. From "Masonry Mortar, Bulletin 321" published by National Lime Association. tSee also Blockset Cement, page 51. use BRANDS OF MASON'S LIME AND PACKAGING The United States Gypsum Company produces limes under various trade names. Each meets the require ments of building construction and each has all the advantages outlined on the opposite page. It is suggeted that the USG local brand be specified. The brands follow : . Red Top* Mason's Hydrate................ 50-lb. paper bags Snowdrift* Hydrated Lime..................40-lb. paper bags Marble Rock Mason's Hydrate............. 50-lb. paper bags USG* Mason's Hydrate........................50-lb. paper bags USG* Superfine Mason's Quicklime. .80-lb. paper bags USG* Pulverized Mason's Quicklime.50-lb. paper bags USG* Fine Grain Mason's Quicklime.80-lb. paper bags Peerless Pulverized Mason's Quicklime. . . . 100-lb. paper bags and 180-lb. net wood barrels or steel drums Peerless Lump Mason's Quicklime... 180-lb. net wood barrels or steel drums Marble Rock Pulverized Mason's Quicklime........60-lb. paper bags and 90-lb. steel drums Marble Rock Pebble Mason's Quicklime. .. .90-lb. and 100-lb. bags, 90-lb. steel drums and 180-lb. wood barrels Marble Rock Lump Mason's Quicklime. 180 and 280 bbls. USG* Mason's Lump Quicklime..........180-lb. net wood barrels or 180 and 200-lb. steel drums All above brands may be shipped in bulk. 'Reg. Trade Mark BB012 2134 DIRECTIONS FOR SLAKING QUICKLIME High Calcium--Use 25 gals, of water per 100 lbs. of lime: add lime to water, spreading evenly with hoe. Hoe vigorously, adding water slowly while hoeing to produce thick creamy consistency. Do not "kill" boiling by adding water too fast. Dolomite--Use 15 gals, of water per 100 lbs. lime: hoe only sutficiently to level out mass. In cold weather put Quicklime in dry box. add small amount of water to start heating ac tion--continue to add water, as heating proceeds, until thick creamy consistency is obtained. Ageing i not necessary for ground or pulverized)--Lump or pebble time, after slaking as above, should be run through an S mesh screen and then permitted to age at least one week uefore use. Protect from drying out and frost. DIRECTIONS FOR SOAKING HYDRATED LIME Use 6 gals, of water per 50 lbs. of hydrate; add lime to water uniformly. Water must cover the lime. For best results, should soak 6 hours, preferable over night. Protect from frost and keep moist. USG Mason's Hydrate (brand) requires no soaking: de velops plasticity as soon as mixed with water and the other materials. Mixing--Mix putty with sand and cement just betore use. with sutficient water to produce proper mortar consistency. 40 YEARS OF PROGRESS THROUGH RESEARCH* UaS structural insulation Weatherweod Plaster Base--Weatherwood Asphalt Coated Sheathing Weatherweod Keof Insulation--Weatherwood Tile and Planlc Weatherwood Building Board ... Insulating Sheetrodc--Insulating Rocklath USG STRUCTURAL INSULATION Guide to the Selection of Structural Insulation Products PRODUCT Weatherwood Insulating1 Flutir Btit Ptam or "Fasnap" Weatherwood Asphalt Coated Sheathing' SIZES 13x43 in. 2x8 ft 4 ft AV. x 3. 9, 10 or 12 ft Weatharwood Root Insulation 22x47 in. InsulatingRocklath-- Reflection Type Insulating Sheetrock-- Reflection Type 16x52 in. 16x48 in. 4 it. W. x 6. r. 3, 9. 10, 11 or 12 ft. THICKNESS -i* and 1* in. APPROX. SHIP. \VT. PER M SQ. FT. i 725 lbs. for V>-in. thickness JOINTS V-Joint Long Edges ii SPECIAL ADVANTAC.ES Fasnap Joint Reinforcement: Reinforcing snaps quickly into place t0 give horizontal joints additional plaster remtorcement. 1225 lbs. Tongue and Groove i Sized for one man to handle. Ap* i Long Edges plied horizontally tor nailing visi- j | bility. ]* in. Vt in. | 1225 lbs. , Square 760 lbs. i 1! ii ' Can be used as structural sheath; ing under all types of trame sid! ing, brick veneer or stucco con- structions. m. 1 725 lbs. N50 lbs Square Edge or , Offset Excellent insulator because of its i low density. | 14* in. in. : ; 2125 lbs. 2300 ibs. ! i >n. % in. 14. in. V* in. H in in. i 1550 lbs. 1 Round Edge i 1 550 Ibs. | 2050 Ibs. i 1050 lbs. Square ' 1 1 500 Ibs 2000 lbs. ; Recessed i : Fireproof; bright metal foil backing orovides effective insulator and vapor barrier. i Fireoroof: bright metal foil backing ; provides effective vapor barrier. insulator and Finished Surface Products PRODUCT SIZES THICKNESS Sheetrock Grain 4 ft. W. x 6, 7, Boards-- s. 9, 10 ft Reflection Type j ! Weatherwood 4 ft. W. x 7. Insulating' 3, 9, 10, 12 ft Building Board < Weatherwood Tile Weatherwood Tlnlsh Plank Weatherwood Faneltlle j 12x12 in. j 12x24 in. 16x16 in. 16x12 in. ; , I2x24t m. 16xJ2t m. ! 24x48t in. S. 10. 12 or 16 in. \\. x 3, 10 or 12 ft L. i 1x4 ft. 1| 2x4 ft. 2x3 ft. 4X4 ft. 4X3 ft H in. A in. u. in. 1* in. in. 2* in. u, m. 1* in. in. in. *i in. APPROX. SHIP. WT. PER M SQ. FT. 1500 lbs. 530 lbs. C25 lbs. N50 lbs. 2125 lbs. 2300 lbs. 725 lbs. 1450 lbs. 1250 lbs. 725 lbs. 1250 lbs. These sizes not stocked, chereiore subject to delay in shipping. rCan be cross-scored to represent two square tiles. COLORS Natural Color Ivory and Gray-Tan FINISHES Walnut. Knotty Pine. and Bleached Mahogany Skin and Textured JOINTS Square SPECIAL ADVANTAGES Photographic reproducnon ot wood panels. Square Butt Joints Finish resists scratching, ^cuffing; high light re- flection. Ivory and Gray-Tan Blend Gray-Tan Blend Ivory Skin and Textured T extured Textured Textured Ogee Exclusive USG Blendtex gray and tan shades blend readily with most interiors. Ogee 4 Edges Bead and Ogee Long Edges Ogee 4 Edges Can be applied without regard to stud or joist spacing. Can be applied vertically or horizontally. Large units make for quick installation. Weatherwood Insulating Products --Made oi wood tiber. knitted together into a homogeneous unit by a process which controls strength and insulating value. Meets Federal Specifications. A strong, sound-absorbent insulator. Three color tones, plain and textured finishes. Resists scuffing and marring. Easily sawed and nailed. See pages iorty-eight and tony-nine tor further Weatherwood data. The Conductivity Wumn Sheetrock--Fireproof wallboard made of gypsum with integral metal foil in sulation (see opposite page). Nailed over wood framework to form the finish for interior walls and ceilings. Will not burn or transmit high temperatures. Contains nothing to rot or decay. Sheetrock walls and ceilings are strong and lasting. See page J2. r iI'cnlhcrnond products is npprn.cuinitcly v. , . UNITED- STATES GYPSUM COMPANY Rocklath--Fireproof lath with integral metal foil insulation. Has the same prop erties as Sheetrock. Made in two types : plain and perforated. See page 22. f^.t u rrr rif thickness BB012 2133 Weatherwood Insulating Plaster Base (Left) Patented "Fasnap" rein forcement, easily snapped into place, reinforces plaster over long joints. Weatherwood Asphalt Coated Sheathing (Right) Applied horizontally, one sheet ties seven studs together. Only one size is needed for all jobs. Insulating Rocklath, Reflection Type (L-r'i) Metal foil backing resi.-ts inward passage of radiant heat in summer as a mirror reflects light, and outward movement in winter. Metal foil makes efficient vapor barrier. Insulating Sheetrock Reflection Type (Right) Has same heat reflection qualities as Insulating Rocklath. Extensive tests have shown that the metal foil, which is used on both these products, serves as a vapor barrier to help control the condensation problem. Weatherwood Insulating Board Panels (Left) Produces a finished insu lated wall In ivory or a gray-tan color which harmonizes readily with most interiors. Weatherwood Tile (Right) Available in sizes shown on page 1, the two-tile units pic tured are applied with the speed of one. Interlocked edges permit ap plication to misaligned studs or joists. Packaging: Weatherwood PI. base; 15 pcs. (90 sq. ft.) per bdl. Asph. Sheathing ; 6 pcs. per bdl. Tile: 8 to 32 pcs. per bdl. Panel tile; 4 to 12 pcs. per bdl. Plank: 12 pcs. per bdl. Building board: 6 pcs. per bdl. Ins. Rocklath : 6 pcs. per bdl. Ins. Sheetrock; 2 pcs. per bdl. 40 YEARS OF PROGRESS THROUGH RESEARCH BB012 2136 BLANKET INSULATION RED TOP INSULATING WOOL USG RED TOP INSULATING WOOL Red Top Insulating Blankets Mineral wool fibres of great strength and uniformity, clean and free from non-insulating material are felted into light-weight blankets and securely fixed to an efficient asphalt-type vapor barrier. The vapor barrier forms the warm side of a complete paper enclosure, providing proper resistance to the passage of vapor, while a tough, perforated, vapor permeable paper on the cold side prevents the accumulation of any moisture within the blanket. Red Top Insulating blankets are so constructed that the insu lating material is uniform in thickness throughout the length of each roll. They are as thick at the edges as in the center. Flanges at either side create an air space immediately back of the lath and plaster and effectively seal the joint against vapor leakage. Sizes and Thicknesses--Made in three thicknesses: 1 in., medium and thick, in rolls of 125, 75 and 50 sq. ft (net area) respectively. Each size fits stud spacings 16 in. o.c. Also available in Red Top Bats 3 ft long in the same thicknesses to fit either 16 in. or 24 in. c. to c. spacings. Red Top Junior Bats Unwrapped bats of Red Top Wool. Useful where condensa tion is not a problem or has been handled by other means. Also used for badly cut up spaces and comers, "packing" in hard to reach spaces when Red Top Blankets or Bats are used. Sizes and Thicknesses--Red Top Junior Bats are made 10?i x 14% x 4 in. and packed in convenient bags containing enough wool for 22 sq. ft. of wall surface (16-in. stud spacing) or 20 sq. ft. net area. Heat Resistance Tests on Red Top Insulating Wool made by various laborato ries show a variation of from 24 to .31 B.T.U.'s, per hr., per sq. ft., per degree difference in temperature, averaging .27 B.T.U.'s per inch. Light Weight (Low Heat Capacity) Red Top Insulating Wool weighs but 1.5 lbs. per cu. ft. Its capacity to hold heat is correspondingly low and it therefore does not retain enough heat to feed heat to the building in the summer, nor is heat wasted in winter in uselessly beating the insulation. Fire Resistant The wool is completely incombustible, withstanding tempera tures of 800M 000' with no more damage than a possible slight sintering of fibres nearest heat Harmless to Health--Odorless Has no properties deleterious to health. Free of dust and odors. There is nothing to attract vermin. Cost Red Top Insulating Wool is competitively priced. Red Top Insulating Wool Fits snugly: seals its junctures with framework COMPANY Ease of Installation Ease and speed of application are provided for in the design. Rolls are made for large expanses: bats, for smaller, and junior bats, tor cut up spaces and corners. * Rt a. Tfade .1fark BB012 2137 I i 4 : Walls The following' heat transmission figures have been calculated on the basis of values recom mended by the 1940 Guide of the American Society of Heating and Ventilating Engineers. Values are expressed in B.T.U. per hr. sq. ft. per 0 F. difference in temperature between the air on the two sides--outside wind velocity 15 m.p.h. TYPICAL--WOOD SHEATHING. 2x4 STU0S. ROCKLATH AND PLASTER j 1 No Red lop insulating Wool Blankets Exterior i Insulation Inch 'Medium Thick Wood siding ' .25 12 i .084 068 Wood shingles Stucco Brick veneer : 1 .25 .30 .27 .12 i .0S4 .13 039 13 .056 068 071 070 Ceilings These figures fulfill the same purpose as those above except that they apply to ceilings. Same bases for calculations were used. The only dif ference is that ceiling figures were based on still air both sides. TYPICAL--WOOD JOISTS 2x6. ROCKLATH ANO PLASTER No ' Insulation Without attic flooring With yellow pinei flooring 1 61 .28 Red Top Insulating Wool Blankets Inch IMediumi Thick .17 j' .11 i. .076 13 087 ! 066 Roofs These figures fulfill the same purpose as above except that they apply to roofs. Bases for calculations same as used for Walls. TYPICAL--WOOD RAFTERS 2 x 6. ROCKLATH AND PLASTER CEILING LOWER SIDE 1 Red Top Insulating 1 No Wool Blankets Type Roof 1 Insulation Inch 'Medium! Thick Wood shingles on I | j wood strips : .29 1 13 088 067 Asphalt or rigid : asbestos shingles' Composition. slate| or tile rooting on wood sheath ing 32 !i ji1 1.14 .091 ! .068 PACKAGINC: Red Top Insulating Blankets in continuous rolls completely enclosed in tough corrugated poper. 1" Blankets ................................................................. Net area 125sq.it. Medium Blankets .....................................................Net area 75 sq. it. Thick Blankets .........................................................-Net area 50sq.lt. Area Insulated f 16" Stud spacing)...................................... 138 sq. it. Area Insulated (16" Stud spacing I...................................... 32 sq. it. Area Insulated (16" Stud spacing!...................................... 55sq.it. Red Top Insulating Bat Blankets in corrugated cases. 1"--26 pieces 15"x 36"........... .........Net area 1"--26 pieces 23" x 36"........... ...........Net area Medium 18 pieces 15" x 36"............. Medium 18 pieces 23"x 56"............. .........Net area Thick 12 pieces 15" x 06"............. .........Net area Thick 12 pieces 23"x 36"............. Junior Bats 18--15" x 11" pieces per paper bag 97Vj sq. ft. 149'/2 sq. tt. b~Yi sq. ft. 103H sq. ft. 45 sq. ft. 69 sq. ft. Area Insulated (16" Stud spacing).................................... 107 sq.ft. Area Insulated (24" Stud spacing)..................................... 160sq.it. Area Insulated (16" Stud spacing)...................................... 74 sq.ft. Area Insulated (24" Stud spacing)..................................... Ill sq. ft. Area Insulated (16" Stud spacing)..................................... 50sq.it. L | Area Insulated (24" Stud spacing).................................. 72 sq. ft. Ij I Area Insulated (16" Stud spacing).................................. 2I5isq. ft. X* I r 40 YEARS OF. PROGRESS THROUGH RESEARCH BB012 2138 U\S ROOFING AND SIDING Asphalt: Shingles--Roll Roofing--Felts--Building Papers--Coatings. Asbestos-Cement: Shingles---Siding--Glatex ? MANUFACTURE AND DISTRIBUTION The company operates mills manufacturing rooting felt, asphalt or asbestos-cement rooting and siding materials, or combinations of them at Jersey City, New Jersey; North Tonawanda. New York; Skaneateles Falls, New York: South Bend, Indiana; East Chicago, Indiana; St. Paul, Minnesota, and South Gate. California. Many of these plants have been continuously producing roofing materials tor almost 40 years. The United States Gypsum Company has been manufacturing quality rooting for almost 10 years. It is not possible to display all of the colors, types and styles of asphalt rooting in this catalogue since all are not made at every mill. At each mii! colors, sizes and shapes either like those shown here or closely approximating them will be found in addition to styles and colors specially made to suit the local demands for materials suitable to the climate and customs m the area each mill serves. Full data on local colors and designs is available from the nearest Sales Office nr company repre sentative. use ASPHALT ROOFING IS MADE OF SELECTED LABORATORY TESTED MATERIALS Asphalt roofing quality cannot be discovered through appear ance or crude tests. Asphalt is a complex material, available from several sources, each yielding asphalt much alike in appearance but of vastly varying utility. Later processing, likewise, arfects the asphalt. Only by exacting laboratory tests and careful mill control, characteristic of USG produc tion methods for 40 years, is it possible to select and process asphalt that maintains the long life, durability and weather proofness demanded by USG roofing standards. Felt made of selected rags is saturated with carefully processed petroleum asphalt as it alone will properly saturate felt. The heavy, higher melting point, coating asphalt must not only be of high quality, but it must be compatible with the saturant, so that one asphalt will not "bleed" into the other and destroy the fine qualities of both. An exclusive USG laboratory test prevents the use in our roofing plants of coating asphalts which are incompatible with saturants. Granules for surfacing must be color iast. opaque, uniformly sized, nonporous and. in turn, coated with oil. gum ur cement to secure proper bond with the asphalt coating. All elements, whether purchased or manufactured at USG mills, must comply with the high quality standard set for each before they can be used in USG roofing. USG THICK BUTT SHINGLES HAVE NEWER, BETTER "MONOLITHIC" DESIGN USG Thick Butt shingles are made in the newer way-- not just standard shingles, which have been given an additional coating of asphalt and granules over their first coating to build up bulk, but shingles in which the increased thickness at the butt is secured by additional coating asphalt alone. There is no weakening of the waterproofness or weather resistance of the monolithic asphalt coating. The granules are applied only where needed to produce color and protect the coating asphalt from surface abrasions and the effect of the sun. This exclu sive USG method is more expensive, but USG Thick Butt shingles are competitively priced. This Thick Butt shingle design concentrates weight, strength and particularly the coating asphalt at the point of greatest wear and greatest need. Thick Butt shingles cast deeper shadows, creating rugged textures. The unexposed area of each shingle is. in turn, protected by the extra thickness of the exposed area of the next course. This extra thickness is all coating--and coating is the life of any shingle--undiluted by granules. Research developed this exclusive design and pro vided the machinery to produce a better Thick Butt shingle with better, more deeply edged graining of the surface. ASBESTOS-CEMENT ROOFING AND SIDINC USG Asbestos-Cement Shingles and Siding combine two non-inflammable materials (selected high grade asbestos fiber and Portland cement) into a hard, waterproof, wear resisting material of great permanence and beauty. All USG Asbestos-Cement Products are made by the "wet" process. Each piece is composed of many layers of a plastic mtxture of Portland cement and asbestos fiber, which, after they have been assembled, are welded together in gigantic presses, heavier and more powerful than those used to form steel in automobile plants. Finally, they are thoroughly steam cured for several weeks until tests prove that every particle of Portland cement has set and that the materials have reached the correct hardness and rigidity demanded by USG Standards. The wet process produces a shingle or piece of siding, made up oi laminations which are welded together permanently. More of the fibers run in one direction than in others, hence the product is slightly stronger in one direction. USG designs them so that this extra directional strength is used not to stiffen the material against handling and erection abuses, but to make both shingles and siding .urnnncst m :hc 1'itilding. UNITED STATES GYPSUM COMPANY BBQ12 2139 ROLL ROOFING: tor quickly installed renewals on existing build ings and lasting weather protection tor industrial, farm and other buildings where maximum economy is desired. Supplied in 36" widths, each roll will cover 100 square feet of root including all necessary laps. Lap Cement and nails are optionally in cluded in each roll. Manufactured in smooth and corrugated sur faces in talc and mica finish, as well as in a wide range of solid color mineral surfaces: all in various weights to accommodate demands of exposure and cost. SATURATED FELTS--BUILDING PAPERS, ETC. Felts saturated with tar or asphalt. House liners. Slaters felt. Building papers, Dead ening felts. Red Rosin sheathing. Asphalt saturated Kraft papers, starter strips and ridge rolls to match asphalt shingles are available from even- mill. ROOF CEMENT: Heavy bodied plastic asphalt fibred with asbestos. Applied with a trowel for patching, pointing; flashing chimneys and parapet walls ; resur facing worn composition roofs. ASPHALT ROOF COATING: A heavy, "cut back" asphalt for resaturating old composition roofs. Brush applied it is a very useful '`renovator" for coating and renewing valleys and other places where wear is heavy. ASBESTOS FIBER COATINC: A "cut back" asphalt to which asbestos fiber has been added. For brush application as a "recoater" over old smooth coated roots that are pitting, checking or cracking. ASPHALT PRIMER: A thin liquid cut back asphalt for priming concrete, gypsum and similar roof decks previous to applying standard roofings. ROLL BRICK SIDING: A serviceable siding with a true reproduction of brick at a roll roofing price. Surfaced with fireresisting mineral granules embedded in a heavy weather-proof base. Packed in easvto-handle half-rolls 43'--6" long x 16" wide including 2TA" selvage edge for ex tra weather protection--enough for 30 sq. ft. of surface area (two rolls to the square). Made in red and burr blends with deeply embossed brick design and black mortar line. PACKACINC: ROLL ROOFING: fully protected and wrapped rolls containing 1 square (100 sq. ft.). SATURATED FELTS, building papers, etc., in wrapped rolls and "half rolls" varying from 108 sq. ft to 500 sq. ft. ROOF CEMENT : 48--1 lb. cans: 24--2H lb. cans per carton; 12--5 lb. and 6--12 lb. pails per case; and in 25. 50 and 100 lb. pails; 225-250 and 450-500 lb. drums. ROOF COATING; Pint cans: 6--1 gal. pails per case; 5, 10, 30, 53 gal. drums. ASBESTOS FTBER COATING: 6--1 gal. pails per case; 5 and 10 gal. pails; 55 gal. drums. ASPHALT PRIMER: 5 and 10 gal. pails; 30 and 55 gal. drums. 40 YEARS OF PROGRESS THROUGH* RESEARCH BB012 2140 ASPHALT SHINGLES UNITED STATES GYPSUM COMPANY Exposure .............................. j"-5" Headiap ................................ 2"-j" Weight Per Square 255 lbs. Relative Cost" V Textured Suriace only. PACKAGING : J Bundles Per Square. Patented. I standard hexagon <. 11V X 36' Exposure ............................... Headiap ................................ 2" Weiglit Per Square 16/ lbs. Relative Cost" II Also a j-tab design of same size and weight, in either textured or plain surfaces. PACKAGIXG : 2 Bundles Per Square. 4-IN-l SQUARE BUTT iO-x 36- 1_J______ P_ Exposure ................................... 4" Headiap ..................................... 2" Weight Per Square 10" x 36" 12/" x 26" 210 lbs. 266 ibs. Relative Cost** III PACKAGIXG: 2 Bundles Per Square. Side Lap................................. 2/" Weight Per Square 128 lbs. Relative Cost** I PACKAGIXG: 2 Bundles Per Square 12" Size A BB013 2141 ' RELATIVE COSTS Exposure .................. -I" -i" Head Lap ................ 2" Weight Per Square 10" x 36" 12" x 56" 1/2 lbs. 215 lbs. Textured or Plain Surface Relative Cost** II PACKAGIXG: 10'--2 Bundles Per Square. 12'--5 Bundies Per Square. THICK BUTT iz-k 36- Exposure .............. Head Lap .............. Weight Per Square 210 lbs. or 240 lbs. Textured or Plain Surface Relative Cost** III PACKAGIXG : 3 Bundles Per Square Std. Giant Exposure .................. 4" 3" Head Lap ................tya," 6" Weight Per Square 9" x 1244" 12" x 16" 253 lbs. 325 lbs. Relative Cost** IV PACKAGIXG : 4 Bundles Per Square. OMT ana u* unm Head Lap.................................. 2" Side Lap.................................... 3' Weight Per Square 162 lbs. Furnished with staples for ap plication. Relative Cost** 1+ PACKAGIXG: 2 Bundles Per Square. "See note pm,*e 1J 40_YEARS OF PROGRESS THROUGH RESEARCH* BBOl 2 2142  ASBESTOS--CEMENT SIDING AND SHINGLES GLATEX STAYS CLEAN LIKE A CHINA DISH Never needs paint. Fireproof. Re sists dirt, freezing, thawing, cold and heat. Ordinary asbestos cement products have a grainy, semi-porous body, much like that of an unglazed flower pot. A surface of'this character stains easily, holds dust tightly, and is difficult to clean. After years of exposure, painting must be resorted to to provide a fresh, clean surface. GLATEX.* the new asbestos-cement siding, has a baked on mineral glaze, similar to that which con verts an unglazed flower pot into a china dish. Glatex sidings are exceptionally water repellent and of ex tremely low porosity. They do not become dirty as readily but when soiled under difficult exposures are cleaned very quickly with a damp cloth. Glatex sidings retain their original beauty much longer and can be renewed readily without painting by simple cleaning with soap and water. Glatex sidings are an exclusive product, developed in L'SG Research Labo ratories. ROOFING SHINGLES. X : 1 * No. 100 USG Hexagonal Method Shingles--Smooth surface, uniform thickness. Class B Underwriters' Label. Gray, green, red, black. 16 x 16 x A in. Approximate weight per square: 224 lbs. No. 300 USG Dutch Lap Shingles--Idealized wood grain . . -- --- -- . texture, uniform thickness. Class B Underwriters' LabeL Gray, .Voter Drawing shows shingles applied with *4 lap. For green, black, red. Size 16x 16x A in. Approximate weight per 14 lap, applv m same manner, using alternate set of nailholes. square: 244 lbs. ' Ujr, UNITED STATED GYPSUM COM PANY i rS SI OH *-w* (U -> CJ y ' SIDINGS Advantages and Uses USG Asbestos Cement Siding offers (1) protec tion against fire from without, (2) protection from the weather, (3) decoration, (4) permanence, and (5) low upkeep for frame buildings. Equally use ful for remodeling existing structures, USG Asbes tos Cement Siding is nailed directly to the wood Old wood siding Note thit nail .or-shingle rests -upon top 'of shingie-belQy, iivintftuy >^pnoper ^Break joints by using Cot sAingies at ends. Punch nail holes as required USG ASBESTOS SIDING SHINGLES Wavy Butt or Thattch Butt APPLICATION--Over old siding, use I x 1 Vi-in. cant strip under edge of first course. Project shingle i/a-in. below strip for water table. sheathing, using 1 -in. galvanized nails in the holes provided for them at the top of each siding unit. If insulation board or Gyplap Sheathing is used. Xailex Fasteners (see below) permit the applica tion of USG Asbestos Cement Siding direct to Weatherwood or Gyplap Sheathing without need for the usual furring strips. Old wood siding USG Cushion Felt JAMB Asbestos Siding Flashing 6 New Wood Mould cAsbestos ^ Wood Siding Moulding HEAD FINISHING AROUND 'VINDO'VS NAILEX FASTENERS In the past when asbestos cement sidings have been applied to structures sheathed with Weatherwood insulation board or Gvplap, it has been necessary to apply furring strips to receive the siding material. Nailex Fasteners <shown at right) permit direct nailing of asbestos cement siding to either insulation board or Gyplap without the use of furring strips. The simple, wedge-like Xailex Fastener is applied to those nails which protrude through the sheathing securely locking them to the construc tion and holding the siding securely. Xailex Fasteners are applied to the nails which do not reach the studs but protrude through the sheathing. They must be used before the interior face of the wall is lathed. Xailex Fasteners fit the 14 gauge. 'Hu" diameter buitonhead, copper alloy, tinned, annular grooved IH" nails, usually supplied with asbestos siding for use over wood siding. X'ailex Fasteners are set with a light hammer tap on the large end. with a plier as shown, or by manually utilizing their wedge-like action. The siding is fastened more snugiy than is possible with care ful nailing to a wood support. Xailex Fasteners are so devised that any pull in the naii nead makes the :a-.tener pinch the nail and hold more ,ecureiy. They literally ,ock the nail to either Weatherwood or Gyplap sheathing. Xo fur ring strips are necessary. Even though the nail just misses a stud or joist, by bending it slightly a Xailex Fastener may be erfectively applied to secure that naii. / Xails which are driven through a joint between two sheathing boards are. FIL likewise, held just as well as though they were nailed through the body of the board. Should a siding unit require replacement alter the house has been com pleted. a 2" x'/i" tinned, Nailax famnar copper alloy, toggle bolt is used through the original naii hole to make the repair. The holding action if Xaiiex Fasteners is almost identical to that nnouced by a toggle ho it. They are mexpensive and actually ,peea coimruction ana reuuce its cost. DD012 2144 67 ^ ) EXPANDED METALS MACHINE GUARDS--WINDOW GUARDS-LOCKERS PARTITIONS--FURNITURE . . . ORNAMENT USG EXPANDED METALS USES Window Guards Grilles Railings Tree Guards Shelving Lockers Gates Partitions T rellises Baskets Cellar Area Guards Bins Xon-Slip Catwalks Low Garden Fencing Furniture ADVANTAGES Econo* Mesh, Regular Expanded Metal Made from a single plate of steel which has been slit and expanded into rigid, non-raveling open-work. Strands and strand intersections, or bonds, are set at a sharp angle. This gives the product strength and rigidity impossible with wire meshes. The expanding process is a type of cold drawing. Econo Mesh has the properties of cold-drawn steel. Workability--USG Expanded Metals can be cut readily into desired shapes without danger of raveled strands. They may be welded, bent and formed, drawn and flared. When cut in any direction USG Expanded Metals still retain their original strength. Finishes--May be: painted, lacquered, plated or coated with nickel, chromium, copper, rubber, etc. Appearance--Well-made, regularly spaced pattern. N'onraveling. Cannot be pried apart. Smooth (Shelf-X) or non slip and rigid (Expanded Metal). Strength--Cold-drawn steel. No rivets, welds or crimping. Heavy strands from one piece of metal make strong but light weight grille. METALS Stocked in open hearth and stainless steel. Made to order in copper, brass, aluminum, etc Shelf-X,* Flattened Expanded Metal Shelf-X is Econo Mesh which is passed through flattening rolls, turning the strands and intersections into a flat, smooth surface on which objects can stand without tipping and slide without catching. Shelf-X is resilient enough to make it a good seating material. DESIGN SERVICE Solutions for your problems. Attachment devices and methods. Guide to the Selection of USG Expanded Metals SUGGESTED USES Style No. Wt. per sq. ft. libs.) Macninei Window i i Parti- 1 Furm- Guards 1 Guards 1 Lockers 1 tions 1 ture i - ! Trays 6: Racks Hj in. l8 i i i 1 i i 1 ! : ! i X in. r 16 X in. fU X in. *10 1 : I *; . :; , 1*1 , X in. * 9 1K in. * 10 r1 4 in. 9 IK in. *68 ' i SHELF-X ; , `i in. rIS `S in. rig K m. *16 H m. #16 X m. *13 IK in. p ! 6 i K ,n- * 0 70 54 80 1. 19 1 80 . 79 1 19 68 1 14 70 87 54 *0 51 1 19 UNITED, STATES GYPSUM COMPANY Sq. in. 1 sec. area i per it. of width Size oi ea. dia mond (in.; Wide Lon* Sheet sue Approx. Width 1 Length open (short way (long way area oi diamond)' or diamond) Made from U. S. Standard Ga. No, 20 50 1 20 * 6c 6 it. 3 ft. 65% 18 16 37 2.00 4 & 6H ft. 3 ft. 76% 16 34 .37 2.00 4 & 6 it. 8. 10. 12 ft. i 76% 13 35 87 2.00 4 Sc 6 ft. 8 ft. 69% 13 S3 37 2 00 4 & 6 ft. 8. 10. 12 ft. 68% 10 23 1 37 3 12 4 Sc 6 ft. 8 ft. 81% 13 .35 I 37 3 12 4 3t 6 ft. 8. 10. 12 ft. 8046% 10 .20 1 37 3 12 4 8c 6 ft. 8 ft. 84% 12 S4 28 1.06 4 it 8 ft. JS% 18 50 1 26 3 Sc 4 ft. a ft. 60% IS -5 50 l 26 3 & 4 ft. 8 ft. 60% 16 16 39 2 12 5 Jt 4 ft. 8 ft. 73% 16 24 89 : 12 3 ic 4 : t i 11. 73% lJ 91 1 40 5 25 ji:4 !t. 5 ft. 81% 16 55 ! 40 > 25 5 & 4 > it. 78Vf% ;o \ A PARTITIONS USG Expanded Metals are used to build both portable and permanent partitions. They have ample rigidity and make a good appearance. Tanels may be removed and re-installcd at will. Thieves cannot readily bend these metals after a small cut, making entry difficult. Econo Mesh is most frequently used for par titions. However, where appearance is of primary importance, Shelf-X Flattened Expanded Metal is suggested. CATWALKS Strong, non-slip, low cost, light weight, minimum interference svith light and ventilation. Seitcleanmg. GUARDS USG Expanded Metals, having the properties of cold-drawn steel, present efficient obstruction to entry, while permitting ventilation and entrance of daylight. They, therefore, are recommended for guards for windows, doors, skylights, etc. Since USG Expanded Metals are readily work able, they can be shaped to fit windows which open in various ways. As in the case of partitions, complete acces sories are available to aid in prefabrication. Areaway Guards--For basement windows. Re movable, strong. Minimum interference with light, maximum protection. Catch more leaves and litter. Durable. EQUIPMENT The appearance, strength and workability of Shelf-X adapts it for use in the fabrication of grilles, tables, chairs, display pieces, trellises, per manent piant stands in oriels and orangeries, low garden fencing, evergreen protection, etc. The fact that it is furnished in stainless steel and, on order, in aluminum, copper or other desired metals, gives it added interest to designers. exoaa PACKACING: Shelf-X in wooden crates of convenient size for handling and storage; pieces of like size and style bundled together. Expanded Metal: In bundles of 3 or 5 sheets according to schedule below. 3 shears par bundle H" #13: 72" x 100" and 72" x 144" Ai"#9: All sizes. 1 J'j" #9: 72" x 96". 72" x 120" and 72" x 144" 4 shears per bundle hi" #13 : 48" x 120" and 48" x 144" H" #10: 48" x 96" and 72" x 96" I'M" #is: Ail sizes. I'M'#9: 48" x 96" 40 YEARS OF PROGRESS THROUGH RESEARCH 1/-11 -i ' INTERIOR-EXTERIOR ' FLAT-TEXTURE . . . PRIMERS--SPACKUNG COMPOUNDS PAINTERS PLASTERS ; USG PAINT PRODUCTS INTERIOR FLAT PAINTS TEXTURE (PLASTIC) PAINTS LIME-LOCKING PRIMERS EXTERIOR MASONRY PAINTS SURFACE PREPARATION MATERIALS LIMEPROOF COLORS USG Paints are essentially "architect's" paints because they are designed to decorate. They supply a wealth or color with clarity and permanence of tone. Because they "breathe," USG Paints permit residual moisture to leave newly applied plaster. USG Paints may be ap plied much sooner-than oil paint without danger to plaster or paint. They dry quickly, creating gloss-less highly light-reflecting surfaces of great beauty. But they are "owner" paints as well. These "new principle" paints cost less to buy and less to apply. Dry ing quickly they speed construction, save labor, save time on repaint jobs. Their exceptional hiding power makes it usually possible to use but one coat for re decoration where two or three coats of older materials were used. In decorative cycles they show savings of up to 50% over older painting routines--and yet provide more frequent decoration, with color changes when they are desired. Water thinned (but not water soluble when they are dry), they avoid the fire hazards of volatile thinners and dryers; likewise objectionable paint odors are not present. In each group several paints -are supplied for like general purposes. They vary in price with the service they perform but not in quality. Texolite by intermixing or reductions of Deep Texolite with white. The economy of paint is best shown by comparing the cost of full maintenance cycles. Such a comparison between Texolite and flat oil paint is given in the table below. Xotice that with Texolite, decoration is more frequent and maintains the work in a fresher condition, with annual color changes if desired, without extra cost. The figures are from the "Price Guide" (Commercial Section) of the Painting Contractors of America and are fully comparable. COMPARATIVE COSTS TEXOLITE 1st Painting 1 coat K-Cemo 1 coat Texolite Start of 2nd Year 1 coat Texolite Start of 3rd Year 1 coat Texolite Start of 4th Year 1 coat Texolite Per yard (4 Years) Cost per yd. .19 .10 .10 .10 .49 FLAT OIL PAINT 1st Painting 1 coat Primer 2 coats Flat Oil Start of 2nd Year Wash and Touch Up Start of 3rd Year Wash and Touch Up Start of 4th Year Wash. Size 2 Coats Flat Oil Per yard (4 years) Cost per yd. .33 .11 .11 .40 .95 Full color charts are given on the opposite page. A paint selector chan follows on pages 72 and 73. Prac tically any color or shade of color may be produced in Calculated % $1.50 peT hour tor painters. Texolite saves 48.5% of flat oil costs. i I \ * \ * White Very Pale Tints of: Gray............................................ Tan ............................................... Green............................................ Blue ............................................. Yellow to ivory........................... Medium Tints of: Gray ........................................... Tan ........................................... Green........................................ Blue ............................................ Yellow........................................ UGHT REFLECTED BY VARIOUS COLORS USED IN DECORATION Figures Indicate Percentage of Light Reflected 81--89 "5--80 70--77 66--72 57--66 75--81 49--59 52--60 50--55 34--10 6a--/0 Strong Tints of: Gray ........................... Tan ............................. ....................... 30--11 Green........................... Blue ............................ Yellow ....................... ....................... 53--58 Solid Colors: Red ...................................................... Yellow................................................. Blue ..................................................... Green................................................... Brown..................... ............... 14--20 38--& 7-- 8 7--10 9--11 Common Wood Finishes: Dark mahogany ............................... 7--12 Walnut ................................................ 14__ )8 English oak....................................... 15--20 Light oak........................................... 30--35 Natural pine and maple................. 45--52 Values based on "Illumination Design Data" General Electric Company and other sources. UNITED STATES GYPSUM COMPANY a, ati O (U.T w* P-* >-* v|` UNITED STATES GYPSUM COMPANY STANDARD COLORS AVAILABLE IN USG WATER-THINNED PAINTS TEXOL1TE AND TEXOLITE "330" DURACAL CEMENTICO BB012 2148 UNITED STATES GYPSUM COMPANY V GUIDE TO THE SELECTION OF USG PAINT PRODUCTS INTERIOR FLAT FINISHES FOR WALLS AND CEILINGS USES oM `m l -lew .ntertor .wills -,inl Ceilings Not recommenucU for jjtf over wood trim subject :o wear, or under permanently damp conditions, or where it will lie subjected to excessive abrasion ' M er new or previously painted wads, ceilings, wallboards. etc., where washability and greater resistance to abrasion are factors. Used as deep brilliant paint, or tor tinting regular Texolite. casein paints, washable calcimine, and ordinary calcimine. The deep colors can be intermixed in any proportion without danger of color streaking or flotation. Ideal ror display backgrounds. Quickly recoatable and non-bleeding. For decorating interior partitions, walls and ceilings, tor more per manent decoration chan ordinary water thinned paints will pro duce. Used over Sheetrock and other gypsum wallboards. and over Weatherwood and other in sulation wallboards. in addition 10 painted or unpamted interior piaster surfaces. Used wherever a hot water cal cimine of ii:gh quality is desired. Home, office, store, shop, etc., interiors. Suitable for use where easy removal is desired. Wherever a high quality cold water calcimine will meet the requirements of the decorative job. For use tn interiors of factories, warehouses, garages, other indus trial structures, also farm budd ings. Excellent for coating pipe coverings. More economical than Laicimme. PRODUCT TEXOLITE*--WHITE AND TINTS-- modern water-chinned paste paint for intenur wall and ceding decoration. Provides brighter, more colorful interior decoration that is per manent and inexpensive. TEXOLITE* "330"--MADE IN OYSTER WHITE AND TINTS--shown on pre vious page. A new washable, waterthinned, interior, flat paint in paste form. TEXOLITE* DEEP COLORS--paint in true brilliant colors bringing new, pleasing color possibilities to the decorating and dis-. play field. Simple and economical to apply. DURACAL* (A PREMIUM CASEIN POWDER PAINT)--in powder form pre pared for application to walls and ceilings by mixing with water. Packaged in standard colors and white. Colors may be intermixed. KAL* (HOT WATER, MICROFINE CALCIMINE)--provides one or the most economical ways to bring color into interior decoration. Packaged in standard colors and white. USG* COLD WATER CALCIMINE--a practical, durable, and colorful low cost finish. Permanent, yet easily removed by washing. Conveniently packaged in standard colors and white. USG* INTERIOR COLD WATER PAINT --an economical utility paint for renewing and brightening interior surfaces. Furnished in white only. CHARACTERISTICS Dries m one hour. Cover? more area. Does not yellow. High light reflection and excellent hitt ing power due to high qualuv pigment. Easy to apply. .Vo objccttonnMe paint odor. No nre hazard. Vo thinner cor. Recoatable. Cuts maintenance costs. As washable as the best grade of flat oil paint. Dries quickl>. rugged, stands abrasion well, no paint odor, does not "yellow." Slightly less hiding power than regular Texolite but one coat usually suffices. Offer unlimited color possibilities because of the wide reduction range of true brilliant coiors and their intermixes to produce blends. Clarity of vehicle allows color pigments their full bril liance, permanently. Smooth working. Casein bound. Recoatable. May be applied over surfaces previously painted with oti paints. Can be applied over untreated plaster surfaces with out preliminary sizing. Superior to ordinary water thinned paints but not a substitute for Texolite. Ground exceptionally line by a special process. Balanced for mula provides easy intermixing of color. Durable. Does not rub off. Easy to mix and applyGood coverage. Smooth finish. Easily applied. Good coverage. Boiling water not needed. May be mixed with tap water if not too cold. Does not rub off. Balanced formula. Coiors may be intermixed to provide pleasing blends. Starch bound cold water paint, below USG Calcimine in quality. Easily applied and readily wished off when repainting is necessary. Best results when surfaces are prepared according to good paint ing practice. INTERIOR TEXTURE FINISHES As an interior decorative textur ing material over any dry, solid, clean surface, such as new plas ter, Sheetrock.* other gypsum wallboards. Weatherwood* and other insulating wallboards. Espe cially adapted to refinishing old cracked plaster surfaces. Used to produce stone eifects. antique effects and m stencil work. TEXTONE*--a plastic paint meeting the demand for a dependable, economical, easily applied texture medium capable of satisfying every requirement ot modern decoration. First grade plastic paint. Textone properly applied forma the most permanent texture body ma terial available. Furnished in white only. Can be integrally tinted with Texolite Deep Coiors or USG Liineproof Colors or ap plied white and color supplied by further treatment. >ame as Textonc. USG TEXTURE PAINT*--a lower priced plastic paint than Textone, used in the same planner. For same purposes as Textone. but provides less coverage. Pro duces excellent `extures tn botn period ana modern styles. ' * Reg Trade Marks i____________________ ___ '__________________________________________________________________________________________________________________________ i 1 . f *3 s i j ,t \ 1 I i i GUIDE TO THE SELECTION OF USG PAINT PRODUCTS USES daT"'ie.c,?on" 1u"d on , , EXTERIOR PAINTS PRODUCT CEMENTICO* - hydraulic cement base Paint for bringing new beauty, life and color t0 porous masonry surfaces. Over extenor masonry surfaces either untreated or previously , EXTERIOR TEXOLITE*-----A flat. ?10SS- punted, ideal for common bnck. cement block, Portland cement less, paste paint, water-thinned but not water fr c stucco, unbiased tile etc. Xot recommended for wails which are soluble when set; for exterior or masonrv _- constantly damp; for such places SUTtelCCS. use Cementico. ' For periodic exterior surface re newal of warehouses, factories, fair and exposition buildings, farm buildings, filling stations, stables, fences, etc., and other clean solid surfaces from which paint scale, whitewash, and dirt nave been removed. USG* EXTERIOR COLD WATER PAINT--An economical utility paint for periodic painting and renewal ot clean, solid, exterior surfaces. CHARACTERISTICS Made ot white Portland Cement and other special ingredients to produce hardness, binding quali. ties ana workability. Only proved limeproof colors are used, weatherproof. Water resistant. Bonds to porous masonry sur faces. Six "masonry" colors (see page 2) and oyster white. A paste paint; contains no Portland ce ment. Lime resistant, water re sistant. will not yellow, and has no paint odor; will not bloom, dear useful colors adaptable to. and common in masonry surfaces. Colors may be intermixed. Not a whitewash. Casein bound paint furnished in. white only. Easy working. Quick drying. Does not rub on. Recoatable. Requires addition of water only before use. COLORS For tinting Textone and other | USG* LIMEPROOP COLORS ----- Strong", 1 With the exception of blue, all water thinned plastic paints, 1 , . 1 colors are specifically limeproof casein paints, calcimine, and ce- I ment paints. Sometimes used for lightproof, limeproof COlOrS 01 great intensity, ;. * .. ' I and lightproof. All finely ground, | pure and strong. Tinted mate tinting stuccos and mortars. Blue is not recommended for | requiring Only Small quantities to secure pleas- .^ ^ r i riais will be several shades lighter when dry than when ia coloring plasters and mortars. 1 mg tints. 1 the wet mix. Filling small cracks, scars, slight imperfections in plaster. Making Swedish putty. Spotting nail heads. Filling holes, ridges, im perfections in concrete. Filling nasi boles, knot holes, cracks, etc., in wood trim. For interior use only. For patching cracks and larger breaks in unpamted plaster walls and interior concrete surfaces. For application by broad knife or trowel. Can be decorated with any decorating material. For patching cracks and breaks in plaster and wherever a Painters plaster of Pans is used with either trowel or broad knife. For preparing these surfaces tor painting: painted and patched walls and ceilings, plastered sur faces, interior concrete surfaces. New or old unpamted concrete floors. Fiber, gypsum and insu* latwg wallboaras. Not recom mended for old painted concrete floors or surfaces which are per manently or periodically damp. SURFACE PREPARATION PRODUCTS USG* SPACKLING COMPOUND -- used for preparatory treatment of surfaces before painting or decorating, to build up or fill im perfections, and to produce a smooth even surface. Exceptionally tine grind. Grit free when dry. Adaptable to knife or brush application. Can be sanded. Adheres to any prop erly cleaned solid surface. Sets without shrinkage m about 2 hours. Dries to extreme hard ness. RED TOP* PATCHING PLASTER a. ! Very white. Non-shrinking. Con . - , . I tains no Ume. Sets in l to 1 V plaster scientifically compounded tor patching i hours. Uniform set and quality. .. , ... ., ,. .. . | Smooth and plastic because of cracks m wails and ceilings easily at negligible ; special ingredients, expense. Conveniently packaged. ' RED TOP* PAINTERS PLASTER Plas- : Mixes readily, works easily, but , , ,. , ., , 1 requires more careiul mampula- ter of Pans for general painters use. Made non than Red Top patching . , , . , Plaster. Provides hard, dense and trom specially selected white gvpsum rock. | strong amsh surtaces. Semng Pac.kaged, in -a, ,1n0 and, o25r pound bags and .m 1 ume approximately 30 minutes. 300 pound barrels. K-CEMO* PRIMER -- the answer to the alkali problem in painting. A priming material which "locks in" lime or alkali and makes possible more durable paint jobs. Useful for correction of unequal suction. A casein and Portland cement formulated primer wnicn assures longer life for decorative mate rials. Produces a hard, iime locking prime coat over which may be applied oil paints, wash able calcimine, casein and water chinned paints. Reg. Trade Marks. PACKAGING: Paste paints: 12--1 qt., or 4--1 gal. cans per carton, 5 gal. or 30 gal. drums singly. Deep color Tcxolitc in cans and drums, as above, plus canons of 6--'/$ pt. tubes, and 12--pt. cans. Ptrader Paints. Cal cimine & Patching plasters, in convenient sized packages, bags, and cartons and m 100 lb. and 300 to 330 lb. bills.. ary'.ng somewhat with conn::' iitv. Luueproot Colors: Cartons or 34 =1 size cans. BB012 2150 . 40 YEARS OF: PROGRESS THROUGH RESEARCH UaS GYPSUM FLOOR AND ROOF CONSTRUCTION Ideal roof and floor constructions are: fire proof; light in weight to reduce costs of sup porting framework. They bond well with standard waterproof roof coverings; are heat insulative or may be readily insulated. They should contain nothing to cause deleterious effects on any material they contact; be proof against rot; decay, the common fac tory gases and many of the unusual ones. Their under surfaces should reflect light well; be of good appearance and be capable of quick economical renovation with factory paints such as Texolite.::: USG has solved roof and floor problems competitively and successfully, for over 25 years. Millions of square feet of these roofs and floors are in use. They are regularly specified by prominent architectural offices. Their advantages are briefly established on this page. On the opposite page the con structions are tabulated and compared for quick selection. On later pages, each type is described, detailed and fully illustrated. LIGHT WEIGHT HEAT INSULATING Precast gypsum constructions are light m weight because gypsum is inherently light. The weight of "poured-in-place" construetion is further reduced by the use of light weight aggregates. Gypsum, unlike most fireproofing materials, is an excellent heat insulator. Gypsum roofs are generally amply heat insulative to prevent condensation under any normal building exposure. ADAPTABLE Readily cost in ploce or cut to .fit (when precast); practically any structural requirements may be met. LIGHT REFLECTIVE The smooth, white, closely knit gypsum surfaces are well known as efficient reflectors of light; when soiled by time, both color and reflective ability are easily restored with USG Texolite." NAILING BASE HEAT LOST THROUGH VARIOUS GYPSUM CONSTRUCTIONS (In B.t.u. per hr. per sq. ft. per deg. diff. F.) Pyrobor* Short Span Tile (3 in. solid)................................. .49 2'/2 in. Sheetrock-Pyrofill*................................................................. 38 2Vi in. Sheetrock-Pyrofill plus '/i in. Weafherwood................24 3 in. Sheetrock-Pyrofill*...................................................................... 35 3 in. Weatherwood-Pyrofill* (1 in. board).................................... 19 Corrugated Sheet Iron.................................................................... 1.50 Note: 5-ply roof covering included except on corrugated sheet iron. Gypsum holds noils well. A standard 2-in. galvanized roofing nail driven to 1 Yi-m. penetration resisted removal until a 180 lb. test load was applied. ECONOMICAL Low in first cost; reductions m cost of supports, speed of comple tion and erection economies provide additional savings. INSTALLED QUICKLY Precast constructions are ready for erection when they arrive from the mill. Poured in piace constructions set in less than a half hour and may be subjected to full live loads of that time. ENGINEERING SERVICE Trained engineers, experienced in all aspects of roof and floor work ore available quickly, of short notice, for advice and consul tation without charge -- phone nearest office. ! LOW MAINTENANCE COST Gypsum docs not rot, burn, decay, nor rust, nor does it stain other morenals. /t is vermin-proof. ERECTION The skilled erection services of USG approved fireproofing con tractors are available rnroughout the counrrv *Rtg. Mark UNITED STATES.. GYPSUM COMPANY A i GUIDE TO THE SELECTION OF USG ROOF AND FLOOR CONSTRUCTIONS USG GYPSUM PLANK Size i 2 in. x 15 in, x 1 0 ft. 2 in. x 1 5 in. x 8 ft. Average Wt,, Lbs. /Sq. Ft. B.T.U. Relative Recommended Value Cost-' Uses Paget 12 .53 1 For floor and roof 1 slobs of light | 76 end 77 weight, speedy 12 .58 ' erection I 2Vi" TONGUE AND GROOVE 2Yi in. x 10 in. x 6 ft. 15 .53 1 | ! For floor ond roof | slobs with close 76 end 77 beam spacing SHORT SPAN TILE SHEETROCK PYROFILL For light weight, flexible roof decks. Solid tile hos areat 3 in. x 12 in. x 30 in. 17 .49 II nail holding power j tor attaching ornamental roof coverings 2 Vi in. Standard plus Vi in. insulation 1 1.5 12 .38 1 .24 II For light weight, low cost, speedily 80 end 81 erected roof slabs WEATHERWOOD PYROFILL** 3 in. Standard 10.5 .19 II For light weight, low cost roof slabs with additional in sulation value 80 end 81 PYROFILL MONOLITHIC 3 in. Thick 3 Vi in. Thick 4 in. Thick ror light weight. 13 .35 1 full fireproof floor 15 .32 II ond roof slobs. Speedily erected. 80 end 81 17 .29 III Nor adapted to small areas BB012 2152 STEEL DECK 3 in. Thick 3 Vi in. Thick 4 in. Thick 14 .35 II For light weight. 16 .32 til full fireproof floor ond roof slobs. 80 end 81 18 .29 IV Speedily erected 20 Gauge (Also 22 and 13 Gauge) For light weight, quickly erected. low cost roof Vi in. Insulation 1 in. Insulation 3 .39 1 3.5 .25 II decks. Insulation 82 end 83 should always be 1 Vi in. Insulation 4 .18 III tion to suit indicates more expensive rhan s<;Furnisned with, soecicl section steel suoourlins. 75 40 YEARS OF PROGRESS THROUGH RESEARCH USG GYPSUM PLANK For floors and roots where a light weight, fireproof, insulotive construc tion is desired. Suitable lor oil root foods and floor foods in apart ments, hotels, schools, etc. Tongued and grooved on four edges, USC Gypsum Plank forms a continuous structure. ADVANTAGES Light Weight -- USG Gypsum Plank weigh buf 12 lbs. per square foot -- half rhe weight of 2-in. stone concrete. The safe super imposed loads given in the table (right* were established as very conservative by tests of nationally recognized laboratories. Rapidly Installed -- Each "plank" is laid without mortar and quickly clipped to the supports. The wide, tapered groove and matching tongue fit snug and tight as each unit slips into place without ramming. The deck literally "flows" out over rhe steel in an uninterrupted movement. Beam and Purlin Spacing May Vary--The long "planks" cantilever over the supports. Since joints are broken between courses, each cantilevered end is supported at either side by a continuous steel beam formed by the metal edging of the adjacent tile. The end joints, likewise, are interlocked. The result is a deck monolithic and continuous in structural effect, which permits variation in the spacing of supporting steel, provided they are within the maximum spocings of the table (right). Sorer Labor--Obviously the combination of no mortar, large units and rapid erection cut installation costs to a minimum. Other Adrantages--USG Gypsum Plank embodies the advantages inherent in gypsum os outlined on page 74. USG LONG SPAN GYPSUM PLANK 2 in. x 15 in. x 10 ft. Construction Soacing or Steel Supports Safe Superimposed Load Floors ........................... Up to 5 ft. ; 150 lbs. Sa. ft. ! Roots ........................ Up to 7 ft,75 ibs. Sq. ft. j USG MEDIUM SPAN GYPSUM PLANK j 2 in. X 15 in. x 8 ft. ; floors..............................! Up to 3 ft. Roofs .............................. Uo to 4 ft. i 150 Ibs. Sq. ft. '75 ibs. Sq. ft. j j 2V2-/N. TONGUE AND GROOVE ROOF AND FLOOR TILE Precast gypsum units which are substantially the same design as USG Gypsum Plank except that they do not have steel edging. They are IVi in. thick, 10 in. wide and 6 ft. long and weigh 15 Ibs. per sq. ft. Used as a deck for structures where the live load does not exceed 150 Ibs. per square foot, such as apartment houses, hotels, office buildings, floor joist spacing should not exceed 30 inches, for roof construction joist spacing may be increased to 48-in. centers. Provide an economical construction because of their light weight, flexibility and ease of erection. With a dead load of less than half fhaf of concrete they permit economies in steel design. DESIGN The steel edges of USG Gypsum Plank and the gypsum body are keyed together by closely spaced loops, expanded from the steel edging, which project into the "plank" body as it is cost at the factory. The wide face of each loop is at right angles to the plane of the loop preventing any cleavage planes at that point. Cutting individual units for the ends of courses does not impair their bond. Tongue ond groove ore substantial. Groove is wider than end of tongue permitting ready nesting when supporting steel members are not quite on the same plane. The steel edging for eacn plank is made in two pieces, each en closing one long and one short edge of the plank, with a mitre at the corner. All corners are reinforced with clinched in steel rein forcements. 3 si TOPICAL USG GYPSUM PLANK CONSTRUCTIONS IS' WIDE FLASHING -WOOD NAILER >^u.$.g steel BOUND / GTPSUM PLANK GALVANI2E0 STEEL EOGING SECTION THROUGH PLANK ROOF COVERING EDGING DETAIL \ UJCLC^ *-- -- Y/S//'/y/s ^ PURLIN Cr NUOUS angle V//y '/// *--WALL OVERHANG GABLE DETAIL OARAPET WALL r2 STEEL BOUND GYPSUM PLANK OR 3" CUR8 TILE CANT PURLIN V/X'/tt. - WALL DETAIL AT PARAPET WALL U.S.G. STEEL BOUND GYPSUM PLANK WOOO NAILER - PURLIN r- JL< t.............. BOTTOM CHORD OF TRUSS- SKYLIGHT CURB DETAIL BB012 2154 USG Gypsum Plank ore economical and easy to erect since they or# installed much like wood. Underside of USG Gypsum Plank roots presents a neat, trim appeorance and is highly light reflective. 40 YEARS OF PROGRESS THROUGH RESEARCH PYROBAR SHORT SPAN ROOF TILE These precast tile units are manufactured to form light weight heat insuiative, fireproof roof decks which will fit any type of roof framing. They may be erected in any weather, winter or summer. PYROBAR* SHORT SPAN ROOF TILE Embodying all of the basic features of gypsum os detailed on page 2, Pvrobar Short Span Roof Tile are laid directly on a system of sub purlins which, m turn, ore laid across the mam roof purlins. Economical for plain flat roofs when the areas involved are insufficiently large to utilize the economies of the poured in place PyrofiiP' constructions ipoge 80) . Likewise they make excellent replacements for combustible or corrugoted iron decks of existing buiidings since the new deck may be laid day by day as the old one is removed. DESIGN Tile are made in solid units reinforced with electrically welded galvanized steel mats designed to afford top and bottom rein forcing. each rile is 3 x 12x30 m. in size, weighing 17 lbs. per square foot. The edges are grooved, to form a space for grout. The grooves are so shaped that the grout is ''keyed" in place producing the effect of a monolithic deck. SUB-PURLINS The need for more efficient and economical sub-purlins than the standard has been met by USG engineers who have developed the U$G Bulb Tee Section, with greater strength and bearing surface for the tile than standard tees of equal section area and weignt. The easily cut tile will fit difficult roof framing; cut up by hips, valleys, and dormers; of cny pitch. Their noteworthy nailing qual ities make them the ideal deck construction for ornamental roofs as any type of ornamental roof covering may be nailed directly to them. Nailing--Ordinary built-up roof covering is applied in accordance with standard practice. Where slate or ornamental tile roofings are to be nailed di rectly to the deck, square-cut nails having not less than 1 1/2-n. penetration into the gypsum should be used. When heavy roof ings are to be applied on very steep slopes, they should be fastened by bolting through the slab or nailed to wood grounds which are, m turn, secured directly to the roof deck. Because of the great expansion of sheet metal, this type of roofing requires thoroughly rigid fastening and the metal cleats used for such purpose should be spaced not over 8 in. on centers and secured with two nails each. TEE SIZES AND ALLOWABLE SPANS Based on 50 lbs. per Sa. ft. Total Roof Load Tees Spaced 2 ft. 6 V. m. C. to C. M = 1/1 OWL Size of Tee Weight per Foot Allowable Soon 13,000 Ibs. per Sq. In. Stress , 20,000 Ibs. per Sa. in. Stress No. 213 USG 2.77 ib. 7 ft. 5 in. Bulb Tee 2 Vz in. x 2 Vi in. 5.5 ibs. 7 ft. 8 m. 2 Vi in. x 3 in. , 6.1 Ibs. 9 ft. 2 in. ! 7 ft. 10 in. I i ; 3 ft. 1 in. i j 9 ft. 8 in. j 3 in. x 3 in. | 6.7 ibs. 9 ft. 4 in. i j 9 ft. 10 in. Wt. of Tees lbs. per Sq. Ft. of Roof 1.03 2.15 2.4 2.61 BB012 2133 Quick, easy erection results from ease ot handling small, light Pyrobor Root Tile. UNITE* STATES GYPSUI* COMPANY Pyrobor Roof Tile ore adopted to construction involving steep slopes- *RtQ. Trade Marx I TYPICAL PYROBAR ROOF TILE CONSTRUCTIONS BB012 2156 Equally adapted to Hat os slopirt9 roots, Pyrobar Root Tilo ore being installed here on a long, wide surface. Underside ot root showing light reflecting quolify ot Pyrobar Root Tile. 40 YEARS.OF PROGRESS THROUGH RESEARCH a l> PYROFILL ROOF DECKS Pyrofill* a quick sitting, light flight concrete, mode of gypsum stucco, wood fibre and water, is poured over o continuous, electrically welded, gahaniied steel fabric onto either a fireproof Sheetrock form or, when additional insulation is required, onto forms made of sound absorbent, insulating Weatherwood. Either form becomes a permanent part of the deck. ADVANTAGES TYPES OF PYROFILL CONSTRUCTION Sheetrock-Pyrofill--Undersurface is Sheetrock, fireproof gypsum board, 32 in. wide, m iengths equal to purlin spacing, so that end joints occur over mam purlins. Steel sub-purlins of light raiis or tee sections ore laid at right angles end clipped or welded to mem purlins and spaced approximately 32Vi in. on centers. PyrofiH construction mav be used over light steel beams or bar joists without sub-purlins if steel spacing does not exceed 36 in. The resulting constructions are light weight (see toble below), hear insulating -- reducing condensation difficulties; exceptionally strong ond durable. The upper surfaces are without joints. The under surfaces present o pleasing panel design. These roof constructions-offer maximum economies where large areas of deck must be erected rapidly and roof pitches do not exceed 45'. On roofs of greater pitch back forming may be nec essary. Sheetrock and Weatherwood are described on pages 48 and 53. Weatherwood*Pyrofill-- Here, 1" Weatherwood, a light weight in sulating fibre board, is used for the permanent form. Not as light reflective as Sheetrock. it provides additional insulation (see fable page 74) and approximately .45 sound absorption units per square foot of surface. Other Types--PYROFILL MONOLITHIC CONSTRUCTION differs from the foregoing in that load is carried entirely by smoll steel wire cables closely spaced, and anchored at both ends by bent strop iron. Temporary wooden forms are used. Forms may olso be built around beams and girders to provide monolithic fireproofing for these members at the same time. CURBS. WALLS. ETC. Usually constructed of pre-cost gypsum tile. They may be also poured in place using the Sheetrock-Pyrofill or WeatherwoodPyrofill construction, if desired. PYROFILL EMBEDDED RAIL CONSTRUCTION is similar to Sheetrock-Pyrofill in that standard roil sub-purlins span the pur lins, over which fabric is laid. Removable wooden forms are hung not less than in. below top of purlins. Thus rails are embedded m the PyrofiH and there is an all gypsum under-surfoce. SUB-PURLIN SIZES AND WEIGHTS OF SLABS Sub-Purlins Spaced 32Yj" Total Load -- 45 Lbs. per Sq. Ft. M - 1/10 WL Allowable Span Size of Sub-Purfin (Weight per Yard) 1 8,000 lbs. per sq. in. Sub-Purlin Stress No. 218 USG8.3-lb. Bulb Teej 7'-7" j 20.000 lbs. 1 per sq. in. 1 Sub-Purlin Stress ! S'-O" Sub-Purlins : m lbs. ; per sq. ft. < ot Roof Weight of Slab including Sub Purlins Sheetrock PyrofiH Weatherwood PyrofiH Minimum Slab! Weight m lbs Mrn. Slab Thickness** Thickness-' per sq. ft. I" Bd. 1.02 ! 2\T 1 1.5 3" Wt. per sq. ft. in. lbs. I" Bd. 10.5 12-lb. Rail 8'-U" i 9'-3" 1.5 2 Vi" 1 2.0 16-lb. Rail H'-2" : i r-6" n i 2Vi" 12.5 20-lb- Rail 13'-3" | 1 3'-8" 2.5 1 3" 15.0 Total slab rmckness including Sheetrock or Weatherwood; minimum mickness of PyrofiH 2 m. mReg, Trade Mark 3" 3" 3" 11.0 11.5 2.0 , TYPICAL PYROFILL CONSTRUCTIONS i RAIL SUB-PURLINS 2'-8^"o.e. TYPICAL SECTION THROUGH ROOF SLAB PYROFILL POURED SLAB FLASHING- WOOD NAILER "I FLASHING FLASHING !--PYROFILL WOOD NAILER POURED SLAB REINFORCING MESH l-SHEETROCK -PURLIN ROOF COVERING PYROFILL POURED SLAB SAWTOOTH PEAK CONSTRUCTION ALTERNATE DETAILS FOR EXTERIOR WALL FRAMING ^PROJECT r ABOVE FINISHED SLAB TO PROVIOE BACKING FOR CURB TILE CURB AND EAVE CONSTRUCTION FOR MONITOR SAWTOOTH GUTTER CONSTRUCTED DB013 2150 PyroRII construction is adaptable to any typo at steal framing or truss construction. . Underside of She*track Pyroflll roof, illustrating the hiqh light re* flection quality of this construction. > 40 YEARS OF PROGRESS THROUGH RESEARCH STEEL Light weight, preformed, interlocking, galvanized or pre-pointed, copper bearing steel units--6 in., 12 in., 18 in, (standard) wide, are dipped directly to the steel framing and covered with Weatherwood Roof Insulation. ADVANTAGES High Load Carrying Capacity--Permits wide spacing of purlins re ducing the amount of structural steel needed. Added strength and rigidity in the deck plates are provided by stiffening beads between the reinforcing ribs. Long lengths permit continuity over purlins, reducing bending moments, increasing safe loads--see table below, at right. Rapid-Erection--Deck plates, I 8 inches wide, are of convenient size for easy handling. Reinforcing ribs are nested at end laps with minimum effort. Non-piercing attachment clips further facilitate erection. Plates may be welded or clipped to purlins. DESIGN Deck plates (standard width 18 in.) in lengths from 4 ft. 0 in. to 25 ft. 0 m. isee table this page) are rolled from 22 ga., 20 ga., or 18 ga. copper bearing steel and weigh 2.0 lbs., 2.4 lbs., and 3.2 lbs. per square foot respectively. The exclusive rolling process eliminates internal stresses in the plates, reducing the possibility of cracks, ruptures, etc. The design makes ample provision for expansion and contraction. The combination of great strength and extreme lightness is se cured through the use of deep (1 Vi-in.) ribs as the "stem" of a "T" beam design, in which the flanges are reinforced by exclusive stiffening beads. The ribs are spaced 6 in. on centers and narrowed slightly at one end to make them nest snugly with those of the next unit. Sides of the deck plates interlock. There is a depending full straight flange on one side of each plate and a channel flange on the other side, into which the straight flange of the adjacent plate firs. Painting--Except when made of galvanized steel, all plates are painted a semi-gloss light groy to provide good light reflection and further protect the steel against corrosion. INSULATION The application of insulation over steel roof decks is recom mended. Not only will the cost of heating equipment and the amount of fuel required be less than in an uninsulated building, but the insulation will tend to control condensation, thereby pro tecting materials, mocnmery and the deck itself. On steep slopes the RD-4 intermediate interlocking clip, ex clusive USG feature, is used to secure the insulation. Any standard composition roofing may be applied over the Weatherwood Insula tion Board. Thermal Conductivity of Steel Deck--In B.t.u. per hour per square foot per degree difference temperature is given in the table below. The calculations include the insulation effect of five ply roofing. Detailed information on Weatherwood is provided on page 48. USG Steel Deck--No insulation......................................................... 0.95 USG Steel Deck--Weatherwood Vi in. Insulation Board. . . .0.39 USG Steel Deck--Weatherwood I in. Insulation Board........... 0.25 USG Steel Deck--Weatherwood I Vi in. Insulation Board ... 0.1 8 SAFE LIVE LOADS IN LBS. PER SQUARE FOOT Bend G- augei Mmogs. menr Purhn Spacing 4"-0*1 4'-6* 5'-0" ' 5'-6" ' 6'-G* 6'-6' 7'-CT 7'-6* S'-O" WL 3 33 1 66 33 i 44 1 4-2 WL 10 105 1 84 i 57 i 56 ! 46 WL 3 20 ~ 10 i ! s r : 67 ! 56 1 ! 102 | 85 j 71 WL 18 3 WL '0 i 1 71 90 ! 39 43 41 ( I 61 52 i 44 38 60 52 ! 45 39 | 76 ! 66 57 | 50 | BB012 2 l3 ? ^ 82 USG SteJ Decks look well from within. UNITED STATES-, GYPSUM COMPANY USG Steel Decks are equally useful in large and small buildings. TYPICAL STEEL DECK CONSTRUCTIONS BB012 2160 83 INustrotes high light reflection quolify of USG Steel Dock Plotos. The Austin Compony, Engineers tr Builders. Studeboker Aircraft Plant. South Bend. Ind. Giffels Cr Vallet, Architects, Detroit. Mich. D CONTROL SERVICE WHERE TO USE SOUND ABSORBENTS Structure Business Duildmgs 5cnooi$ Where Corridor ceilings ( Ceilings of offices ' Ceilings of stores, shot,* , Corridor ceilings ; Classrooms i Swimming pools 1 Auditoriums ; Libraries ` Gymnosiums Hotels. Clubs. Restaurants. etc. Churches Auditoriums. Sports Arenas, Theaters Hospitals Foctones Corridor ceilings Public rooms, boll rooms i Dining rooms j Auditoriums Sunday School rooms | Lobbies, corridors j Ceilings j Lobbies Ceilings, walls I Lobby ceilings i Corridor ceilings ; Words, diet kitchens j loODies. delivery rooms ; Nurseries , Mom room in noisy processes 1 Test rooms ! Infirmorres Shoo offices . Why Slops "speaking fuoe" effect of corridors j Reduces noise ievei and clerical errors . Lends digmtv and mcreoses sales Ends distraction from corridor noise and npise from other rooms Reduces noise ievei and betters speech oudifion Reduces noise level Corrects reverberafion time, creates better audition for soeech and music Mamfoms quiet Maintoms Quiet Quiet for guest rooms Quiet. Better audition for speech and music Quiet Good acoustics for speech and music Good audition. Quier Quiet Controls reverberation, produces good hearing Quiet Good ocousfics for speech, music and "talkies'' Quiet Prevents noise travel through corridors to annoy patients Quiet Quiet Quiet Better working conditions, less accidents Quiet Qu.et - Quiet WHEN YOU NEED ENGINEERING ASSISTANCE USG Acoushcol Engineers and those of USG District Sound Con trol Contractors are quickly available; their services are free. Their aavice, if sought before plans are completed, will effect maximum economy and acoustic excellence. Since USG manu factures all types of sound absorptive materials, their advice in selection of the best types for a specific purpose is based on experience and good acoustical proctice and not biased by com mercial necessity. They are also available for the proper solu tion of acoustical difficulties in existing buildings. See list on back cover. Kt 6 T I F* l> A C O U S T O N E Motif'd" Acoustone is standard Acoustone with a permanent, in tegral decoration which produces architecturally correct ceiling patterns m wide variety of type, motif and scale. The ceiling aesigns may be composed entirely of tile m one pattern or of tile in two complementary potrems, used in blocks of four. Slightly more expensive than Acoustone. Special designs by archi tects will be executed to order. Typical tiles are shown here and on the opposite page with the ceiling pattern besiae the respec tive tile. All of the acoustical values, thicknesses, etc., painrability and fireproofness of regular Acoustone I see page 86) are pre served in Motif'd Acoustone. The patterns are produced by etching parallel lines on the file in either one direction or two directions at right angles. ! a a ow: wi KW(KJ ; Destcn 10-RL........................... Tile end Pattern NITED STATES GTPSUM COMPANT Design ll-RL............................ Tile and Pattern 'Reg. Trade Mark GUIDE TO THE SELECTION OF USG SOUND CONTROL MATERIALS Material ACOUSTONE AND MOTIF'D ACOUSTONE PERFATONE QUIETONE SABINITE 1I TyPe .. Th,Ckne" ^0j*V. Fireproof Point- Clean- Relative CMffil'ientl Ro,i"9 i ability ability j Cost ; - Mineral Wool Fibre Tile | 'n. j | tt in. Ts- in. ff in. 1 j J Metal Facing; Absorbent Wool Pad 2 Vz in. Standard IVz in. "50-50"t Wood Fibre Tile Acoustical Plaster Vz in. ] in. Vz in. Type F Va in. Type F Vz in. Type M in. Type M Vz in. Type 38 .60 '65 .70 .75 .85 .65 .55 .75 .50 .60 .55 .65 .50 i Incom- j _ ;, i bustible Good j Good jIncom i [ bustible Good Good bustibl'e |Good 1 Good V 86 and 87 VI 86 and 87 VI1 136 and 87 i ncom- i , ** i bustible jGood iGood Incom Good ; Good | bustible VIII 186 and 87 .. I . IX j 86 and 87 Incom bustible Com bustible Com bustible Incom bustible Good Good | V! 1 Fair Fair j Fair I Fair : 111 IV Fair Fair 1 ! 86 and 87 i 88 and 89 | 88 and 89 i 88 and 89 Incom bustible Fair Fair. II 88 and 89 Incom bustible Fair Fair j | 88 and 89 Incom bustible Fair | Fair j || j 88 and 89 Incom Fair ! Fair bustible 1 j|] 88 and 89 * "I" indicates least expensive; "11" indicates more expensive than "I," etc. * Properties of Motif'd Acoustone are the same as for Acoustona. t Half of the tile are unperforated and without pads. The other half are standard. erooa D<*n 17-RI............................ Til. one Pattern Desicn 1S-RL............................ Tile end Pattern 40 YEARS OF PROGRESS THROUGH RESEARCH ^ACOUSTONE PER FA T ONE UNITED STATES GYPSUM COMPANY i \ o w o +*- ru u O' u 7 Made of processed mineral filaments, Acoustone is a sound ab sorbent tile, with either a Vs-m. bevel or with plain eages so accurately formed that joints between tiles are scarcely discernible. Acoustone,^ then, may be unobtrusively included in a decorative scheme or used to obtom decorative patterns. ADVANTAGES Acoustone wiil not burn nor support combustion. Unpainted, white Acoustone reflects 70% of light striking it--mill-painted, 83%. May be installed m connection with recessed fluorescent lighting. Repeated painting does not lessen its sound absorption. Unpainted tile are easily cleaned with a vacuum cleaner. Acoustone installa tions are as permanent as the building. TEXTURE - Resembles Trovertme marble. No two file are exactly alike in tex ture, since the texture is a concomitant of the manufacturing process and is not secured by moulding or stamping. COLORS White, ivory and cream, integrally tinted throughout the entire file substance. Other special colors are obtained by field painting. Mill painted Acoustone in white or tvory are available. SIZES Tiles are regularly made m 1 2 x 1 2-in., 6 x 1 2-in. and 9 x 1 8-in. sizes, in 9/| 4-in., M/i4-m., 13/i 6-in. and 15/j 4-in. thicknesses. Acoustone. Stouffor'i Restaurant 42nd Street at Park Avenue, New York City, N. Y. in Perfatone* a perforated metal tile conceals a sound absorbent pad. This sound absorbent pad of mineral wool, manufactured to exacting standards designed to maintain published absorption coefficients, is completely enclosed in a flameproof membrane which keeps dirt and dust out of the absorbent. Tile edges are beveled and returned vertically to be held securely by special tee runners. Perforations, comprising only 14o of the surface, are small enough to blend inro the file coloration. Surface finish is baked enamel. ADVANTAGES The mefal units and mineral wool pads are incombustible. Pad wrappings are flameproofed. The enameled metal surface may be washed repeatedly or repainted many rimes, without affecting the sound absorOing qualities. The enamel finish has high light reflec tive properties. Perfotone may be adapted to recessed fluorescent lighting installations. COLORS Ivory and white. SIZES Units are 12 x 24-m. with a center groove which gives the effect of 1 2 x 1 2-in. units. Perfoboord and Perfabestos--When sound absorbing materials are to be exposed to severe abrasion, Perfaboard (perforated haraboard) or Perfabestos (perforated asbestos board), are recommended for their wear-resisting qualities. These ere attached to furring strips and backed with sound-absorbing pacs. 'R, y. Trade .i/.i/it 40 YEARS OF PROGRESS THROUGH RESEARCH? ^QUIETONE VS s A B I N I T E \ UNITED: states gypsum company > Economical, decorative wood fibre tile, mode by a unit felting proc ess which results in a tile of high acoustical value. It should not be --mused with wood fibre file used for thermol insulation. Surface s free from puncturing and other surface oddities not uncommon ,n acoustical materials. Colors ground in oil or japan, reduced with mineral spirits, may be sprayed on Quietone.* ADVANTAGES Inexpensive application and low material cost recommend Quietone for economical installations. It classes among the high efficiency sound absorbents, having a high uniform absorption from normal voice frequencies up through the higher pitched noise frequencies. TEXTURES AND COLORS Standard textures in sanded or brushed surfaces. The former is light ivory and the latter, light buff. Either texture may be mill tinted m white or the following pastel shades: rose, cream, blue, buff and green. ' SIZES Quietone Acoustical Tile units are 12 x 12-in., and are made both Vi and l-in. thick. Quietone ceiling. Ford Motor Co. Exhibit* * 1940 Son Francisco World's Fair. Sabinite* Acoustical Plaster combines the features of standard plaster finish with very good sound absorbing qualities. It is a mixture of light weight aggregate, gypsum plaster or Portland cement, and special ingredients, proportioned to produce a sound absorbent structure when applied to brown coat plaster. ADVANTAGES In new construction Sobmite provides full acoustical correction at much lower cost than is entailed when sound absorbents are applied m completed structures. Sobmite is economical. It is mixed in the mortar box with water only and opplied with ordinary plastering tools. Application to vari ous thicknesses obtains desired degrees cf acoustical correction. Sobmite is tinted or spray painted after application without loss of efficiency. It is sanitary and vermin-proof. varieties There qre three vqrieties: Sabinite F; M; and 38, F and M ore used over gypsum plaster bases; Sabinite 38, over Portland cement or Oriental Exterior Stucco bases in high humidity environments. Sobmite M, has higher noise absorption characteristics ond a finer fexture. texture Similor to sond floot finish. COLORS Ecru, ivory, cream, buff, white. Trade Mark Soblfiit* ceiling, lobby of Horthoy Cheooieto Corp., Hortfcey, P*. Architect: Paul Witmor, Harshay, Pa. 89 BB012 2166 UNITED STATES GYPSUM COMPANY 300 West Adams Street Chicago, Illinois Sales Offices Albany, N. Y.......................1106 National Savings Bank Bldg. Atlanta, Ga................................................... 1726 Candler Bldg. BaMmara, Md.............................................................Court SquareBldg. Birmingham, Ala.............................................. 1203 Comar Bldg. Boston, Mass....................................................S05 Statlor Bldg. Buffalo, N. Y....................................................1116 Rand Bldg. Charlotte, N. C.................................... 1013 Liberty Ufa Bldg. Cincinnati, Ohio.......................................................... 1117 CorawTower Clavaland, Ohio........................................................... 627 HannaBldg. Dallas, Tan...............................................................P. O. Box B96 Denver, Colo.................................. 836 Continental Oil Bldg. Detroit, Mich..............................................7310 Woodward Ave. Houston, Tax................... '..................... 2030 Commerce Bldg. Indianapolis, fnd.. . . . 1015 Architects' and Builders' Bldg. Kansas City, Mo................................. 4638 Mill Croak Pkway. Las Angelas, Calif....................................... B07 Architects Bldg. Milwaukee, Wis...........................(At Mill) 439 W. Oregon St. Minneapolis, Minn......................................2510 Foslsay Tower Now York, N. Y......................................... 9 Rockefeller Plena Omaha, Nab.......................312 Woodmen of the World Bldg. Philadelphia, Pa...............................................1616 Walnut St. Pittsburgh, Pa.................................1905 Commonwealth Bldg. Portland, Ora................................................ 302 Spalding Bldg. St. Louis, Ma............................................... S032 Forsyth Blvd. Salt Lake City, Utah..........................................400 Dooly Bldg. San Francises, Calif..................................... 2501 Harrison St. Saattia. Wash.................................. 1131 Doctor Horton Bldg. Washington, D. C... ............................ 1122 Invastmaat Bldg. Samson Plaster Board Company Salas Agents for United States Gypsum Company Crosby Building, Buffalo, N. Y.