Document XRyQ4ogOaXMby8MK64Y1mkNxB

of andAmerican Society Heating Ventilating Engineers Guide, 1936 t Heat Transmission Coefficients and Tables Table 2. ^Conductivities (k) and Conductances (C) of Building Materials and' Insulators--Continued The coefficients are expressed in Btu per hour Per square foot per degree Fahrenheit Per 1 in. thickness unless otherwise indicated. _ ,,,, 9 1 able * conductivities (k) and Conductances (C) of Building Materials and Insulators--Continued f coefficients are expr in Blu per hour.par squarefoot per degree Fahrenheit per 1 in. thickness, unless otherwise indicated. CONDUCTIVITT (4). OR Conductance (C) 3 Material Description: D CJ a g? a5 l! K* S3 aj sB INSULATION-BLANKET OR FLEXIBLE TYPES Chemically treated wood fibers held between layers of strong paper/ Eel grass between strong paper/...................... " * " " " Fabric with non-metallic reflective surface (J in. thick) _____ _______ Flax fibers between strong paper/________ Chemically treated hog hair between kraft paper/ .............................. ................... Chemically treated hog hair between kraft paper and asbestos paper/ ......... Hair felt between lavers of paper/ Kapok between burlap or paper/_______ --. Jute fiher/. 3.62 4.60 3.40 4.90 5.76 7.70 il.00 1.00 6.70 70 ` 90 90 70 90 71 71 75 90 75 insulation--semiRIGID TYPE Fnm Flax/ Flax and rve/....... Felted hair and asbestos/.. 75% hair and 25% jute/ 50% hair and 50% jute/ Jute/ Felted jute and nafawtoa/ Comnrosed neat irnvn 11.00 12.10 13.60 7.80 6.30 6.10 6.70 10.00 . 11.00 90 70 90 90 90 90 75 90 70 INSULATION--LOOSE fill or bat type Fmrib Glass Wofii, Granular________ Made from ceiba fibers/___ . .. ......... Fibrous material made from dolomite and silica ................. Fibrous material made from slag Fibrous material 25 to 30 microns in dfa- meter, made from virgin bottle glam Made from combined silicate of lime and alumina Made from expanded ahiminum-magnMiiiim silicate__ ________ _ -... _____ *U A* Flaked, dry and flnffv/ " ** * 1.90 1.60 1.50 9.40 1.50 4.20 6.20 30.00 24.00 18.00 12.00 34.00 26.00 24.00 19.80 18.00 75 75 75 103 75 72 42 90 90 90 90 90 75 90 75 a aaa a a - Rock wool with a binding agent Rock wool with flax, straw pulp, and binder gRock wool with vegetable fibers 21.00 18.00 14.00 10.00 14.50 14.50 11.50 90 90 90 77 75 72 INSULATION--RIGID , rVtBRTJfli Th From maple, beech and birch (coarse) Redwood bark. .......... 13.20 3.00 90 90 For notes see Page 107. 108 .Ml i1 Sa 03 8 h 6K I < 0.27* 0.25 0.26 0.25 0.33t0.28 0.26 0.28 0.25 0.24 0.25 3.70 4.00 3.85 4.00 3.03 3.57 3.85 3.57 4.00 4.17 4.00 (|) 0) (1) (1) (1) 0) 0.26 0.30 0.32 0.28 0.27 0.26 0.25 0.37 0.26 3.84 (1) 3.33 (3) 3.12 (1) 3.57 # 0) 3.70 (1) 3.85 (1) 4.00 (3) 2.70 0) 3.84 M 0.23 0.24 4.35 4.17 (3) (3) 0.27 0.27 3.70 3.70 (3) (0 0.27 3.70 (3) 0.24 , 4.17 (3) 0.32 1.00 0.77 0.59 0.44 0.60 0.52 0.48* 0.35 0.34 0.27* 0.31 0.30 0.29 0.28 0.27* 0.33 0.38 0.31 0.36 0.31 3.12 1.00 (3) (1) 1.30 (I) 1.69 , (1) 2.27 . (11 1.67- ( 1.92 (1) .2.08 (3) 2.86 2.94 0) (3) 3.70 3.22 (3) 3.33 j.3-,45 3.57 3.70 3.03 1) u (l) <n in 2.63 3.22 w (3) 2.44 0) i) 2.78 3.22 ( 0.30* 3.33 . Material insulation--rigid -Continued CqrxbOard Fibsb-- Description O a'e a Egg I1 B H s. e ir s| sS 1j No added binder... 14.00 90 10.60 90 0.34 0.30 7.00 90 0.27 5.40 90 0.25 Asphaltic binder-- TypicalCore of fiber board coated two sides with non- metallic reflective surface {3A in. thick)----- 14.50 23.4 90 -- 70 0.32 0.33* 0.27t Fiber board coated one side with nonmetallic reflective surface ($6 in. thick)-- Made from chemically treated wood fiber.--- 20.00 75 70 0.49f 0.36 Made from chemically treated wood and vegetable fibers 25.00 75 0.38 Chemically treated hog hair covered with film of asphalt Made from corn stalks--------- exploded wood fiber-. hard wood fibers--------_--........ 10.00 15.00 17.90 15.20 75 71 78 70 0.28 0.33 0.32 0.32 Insulating plaster 9/10-in. thick applied to J6-in. plaster board base-------------------------- Made from licorice roots. Made from 85% magnesia and 15% asbestos Made from shredded wood and cement-------- sugar cane fiber-- 54.00 16.10 19.30 24.20 13.50 75 81 86 72 70 1.07f 0.34 0.51 0.46 0.33 Sugar cane fiber insulation blocks encased in asphalt membrane---------------------- -----------Made from wheat straw------------_-- - " " wood fiber---------- ----- ----- ----- 13.80 17.00 15.90 15.00 70 68 72 70 0.30 0.33 0.33 0.33 52 0.33 8.50 72 , 0.29 15.20 0.33 16.90 90 0.34 2.94 3.33 3.70 4.00 3*12 3.03 <i) at <U <`i (1) 3.70 (3) 2.04 2.78 0) (3) 2.63 1 (3) 3.57 3.03 3.12 3.12 <3> (3) 4 (3). 0.93 (3) 2.94 (3) 1.96 (1) 2.17 (3) 3.03 . (3) 3.33 3.03 3.03 3.03 3.03 3.45 3.03 2.94 (3) (3) (3) (3) 0) (3) (3) (1J building boards ASBESTOS------------------- Gtpsok- Plaoteb Boasd___ Compressed cement and asbestos sheets- Corrugated asbestos board------------------- Pressed asbestos mill board------------------ QSlhiCeCekt aWsHbineWstHofsfl.i , ......................... -- Gypsum between layers of heavy pap Rigid, gypsum between layers of paper 0^y4jg--inui. tuhuicuk*)/------------------------------------------ Gypsum mixed with sawdust between layers of heavy paper (0.39-in. thick)------------------ eli^n.,)_ 123.00 20.40 60.50 48.30 62.80 53.50 60.70 -- 86 110 86 110 70 90 9_0 -- 2.70 0.48 0.84 0.29 1.41 2.60f 3.60| 3.73f* 2.82f* 0.37 2.08 1.19 3.45 0.71 0.38 0.28 0.27 0.35 (1) (2 (1) u> (3) (1) (1) __ **" ROOFING CONSTRUCTION Rooting___ ______________ Shingles- Asphalt, composition or prepared.. Built up--4-in. thick--------------------------------Built up, bitumen and felt, gravel or slag surfaced^Plaster board, gypsum fiber concrete and 3-ply roof covering--- Asbestos. Asphalt-- SlateWood. 70.00 -- _-- 52.40 65.00 70.00 201.00 -- 75 -- _ 76 75 75 _. 6.50f* 3.53f* 1.33f 0.58f 6.00f* 6.50t* 10.37* 1.28f* 0.15 0.28 0.75 1.72 0.17 0.15 0.10. 0.78 (3) -- (2) < (3 <3> ID -- PLASTERING MATERIALS PiagrgB------------------------------ Cement______ --. Gypssuum, typicaL. Truck).ness 5^ in._ Metal Lath and Plaster-- Total thickness ^ in Wood Lath and Plaster.___ H-ul plaster, total thickness % i For notes see Page 107. 109 ----- 8.00 0.13 (2) 3.30* 0.30 __ 73 8.80t 0.11 (4) 4.40f* 0.23 __ 70 2.50t* 4 0.40 (4) 1