Document aJap9GZYeB0BDqNJaG688BgqB

~ HEAT1NC VENTILATING AIR CONDITIONING GUIDE 1940 Table 2. Conductivities (k) and Conductances (C) or Building Materials and Insulators3--Continued The coefficients are expressed in Btu per hour per square foot per degree Fahrenheit per 1 . thickness ________________________ unless otherwise indicated.________________________________________ Material Description 5? w -h* ij *3 OD 3a g g -e o OO iT is &1 IN8ULATION--BLANKET OR FLEXIBLE TYPES INSULATION--SEMIRIGID TYPE INSULATION-LOOSE FILL OR BAT TYPE Fiber__ Glass Wool Granular____ For notes see Page 94. Chemically treated wood fibers held between layers of strong paper/ Eel grass between strong paper/___ "* * H 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 layers of paper/__________ Kapok between burlap or paper/ -- Jute fiber/................ . ................... Ground paper between two layera. each H-n. thick made up of two layers of kraft paper fmmpl* thir.V) Stitched and creped expanding fibrous blanket... .............. Paper and asbestos fiber with emulsified asphalt binder_________________ __ ______ 3.6? 4.60 3.40 4.90 S.76 7.70 It .00 1.00 6.70 12.1 1.50 4.2 0.27* 70 0.25 90 0.26 90 0.25 90 0.28 71 0.26 71 0.28 75 0.25 90 0.24 75 0.25 75 0.40f 70 0.27 94 0.28 Flax/ Rax and rye/........ ..... Felted bear and asbestos/.............................. .. 75% hair and 25% jute/ 50% hair and 50% jute/ Jute/___ Felted jute and asbestos/___ _______________ Compressed peat moss . . 13.00 11.00 12.10 13.60 7.80 6.30 6.10 6.70 10.00 11.00 90 90 70 90 90 90 90 75 90 70 0.26 0.26 0.30 0.32 0.28 0.27 0.26 0.25 0.37 0.26 Fibrous material made from dolomite and silica........... . .......... Fibrous material made from slag. Redwood bark ___ Redwood bark........... ............... Fibrous material 25 to 30 microns in dia- meter, made from virgin bottle glass-------- Made from combined ailicatp of lime and alumina............. ....... ..................... Made from expanded aluminum-magnesium silicate____ aa a Flaked, dry and fluffy/___ a a aa a a aa a * * * __ _ a a aaa Rock wool with a binding agent... Rock wool with flax, straw pulp, and binder Rock wool with vegetable fibers____________ 1.90 1.60 1.50 9.40 3.00 5.00 1.50 4.20 6.32 30.00 24.00 18.00 12.00 34.00 26.00 24.00 19.80 18.00 8.10 21.00 18.00 14.00 10.00 14.50 14.50 11.50 75 75 75 103 90 7S 75 ` 72 86 90 90 90 90 90 90 75 90 75 90 90 90 90 90 77 75 72 0.23 0.24 0.27 0.27 0.31 0.26 0.27 0.24 0.29 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 96 4.00 3.85 4.00 3.57 3.85 3.57 4.00 4.17 4.00 (3) in Cl) Cl) (3) (3) (3) (l) (3) 2.50 3.70 3.57 (4) (3) (i> 3.84 3.84 3.33 3.12 3.57 3.70 3.85 4.00 2.70 3.84 (1) (3) (l) (1) (1) In (3) a) (3) 4.3S 4.17 (3) (3) 3.70 3.70 . 3.22 3.84 (3) In (i) W) 3.70 (3) 4.17 (3) 3.45 1.00 1.30 1.69 2.27 1.67 1.92 2.08 2.86 2.94 3.70 3.22 3.33 3.45 3.57 3.70 3.03 2.63 3.22' (3) (1) I') (1) > (1) In (3) (1) (3) (D (1) In n ill In (3) (3) D ensitt (Lb peb Cu F t) A u th o r ity Resistivity l/1 1\ R esistance CHAPTER 5. HEAT TRANSMISSION COEFFICIENTS AND TABLES (C)Table 2.' Conductivities {k) and Conductances of Building Materials and Insulators3--Continued The coefficients ere expressed in Btu per hour per square foot per degree Fahrenheit per t in. thickness unless otherwise indicated. Material Description - ss S 8 oD is >a5 ge aE ota. s* O D l g o g o OO <taen8 INSULATION--LOOSE FILL OR BAT TYPE .--Continued Sawdost_ Shatikqs-. VariousVarious from planer______ :____________ From maple, beech and birch (coarse) - *12.00. 90 8.80 90 13.20 ; 90 0.41 0.41 0.36 2.44 2.44 2.78 insulation-rigid COHKBOABD_______________ picaLvo added binder- Asphaltic binder Typical,----- Chemically treated hog hair covered with film of asphalt. Made from corn stalks-. exploded wood fibers _ hard wood fibers-. Insulating plaster 9/10 in. thick applied to in. plaster board base. e from licorice roots-- 85% magnesia and 15% asbestos shredded wood and cement...___ sugar cane fiber. Sugar cane fiber insulation blocks encased in asphalt membrane. Made from wheat strew-- wood fiber___ 14.00 90 10.60 . 90 7.00 90 5.40 90 14.50 90 -- -- 0.30* 0.34 0.30 0.27 , 0.25. 0.32 0.33* 3.33 2.94 3.33 3.70 4.00 3.12 3.0J 10.00 15.00 17:90 15.20 75 71 78 70 0.28 0.33 0.32 0.32 3.S7 3.03 3.12 3.12 54.00 16: to 19.30 24.20 13.50 75 81 86 72 70 1.07f 0.93 0.34 2.94 0.51. .. 1.96 0.46 2.17 0.33 3.03 13.80 17.00 15.90 15.00 8.50 15.20 16.90 70 - 68 72 v 70 '52 _72 90 0.30 0.33 0.33 0.33 0.33 0.29 0.33 0.34 3.33 3.03 3.03 3.03 3.03 3.45 3.03 2.94 BUILDING BOARDS Asbestos____________ Gtfsum- Plasterboard___ Compressed cement and asbestos sheets------Corrugated asbestos board. Pressed asbestos mill board. Gypsum between layers of heavy paper,.-- Rigid, gypsum between layers "of heavy paper (H in. thick). ` ' Gypsum mixed with sawdust between layers of heavy paper (0.39 in. thick)------- ^ %t=====z 123.00' 20.40 60.50 62.80 53.50 60.70 --- . 86 110 86 70 90 9_0 -- ;^2.70 0.48 0.84 1.41 ' 0.37 2.08 1.19 0.71 2.60f 0.38 3.60t 0.28 3.73}* 0.27 2.82f* ' 0.35 ROOFING CONSTRUCTION Rooting Asphalt, composition'or prepared. Built up--H in. thickBuilt up, bitumen and felt, gravel or slag surfaced*: Plasterboard, gypsum fiber concrete and 3-ply roof covering V/i in.'thick-------------- Asbestos. Asphalt-- Slate__ Wood. 70.00 ' 75 -- - __ -- 52.40 65.00 70.00 201.00 -- 76 75 7_5 -- PLA8TERING MATERIALS Plaster..____ Cement- Gypsum, typical-- Gypsum and expanded aluminum-magne sium silicate, mix 4 to 1___ ___ ... Thickness H in-----------------------------------------Metal Lath and Planter-- Total thickness M in.. Wood Lath and Plaster.. H in. plaster, total thickness in... -- 39.9 ___ , -- -- ' 75 73 -- 70 For notes see Page 94. 6.50t* 0.15 3.53}* 0.28 1.33 0.75 0.58} 6.00}* 6.501* . 10.37* ' 1.28}* 1.72 0.17 0.15 0.10 0.78 8.00 3.30* 0.85 8.80} 4.40}* 2.SO}* 0.13 0.30 1.18 0.11 0.23 0.40 u> iinn in <(ttoonn (3) (3) (4) (3) u) (3) (I) (3) (3) (3) I(s3)) 3) |3) |3) (1) CO ?2) (1) (3) ( _(1) (3) (2) (|30) (3) 1?) (2) _l(<3)) (4)