Document kDGe22JGOv9N01d60Qn1Yab2y

Heating. Ventilating Air Conditioning Guide 1939 Table 2. Conductivities (k) and Conductances (C) of Building Materials and Insulators2--Continued The coefficients are expressed in Btu per hour per square foot per degree Fahrenheit Per 1 in. thickness unless otherwise indicated. Material Description s -4 --.Jo ha 3g la S8 > g5 SD BD gi oo OO iT ig i ii INSULATION--LOOSE FILL OR BAT TYPE --Continued frRANTTT.AR _ INSULATION--RIGID BUILDING BOARDS For notes see Page 95. meter, made from virgin bottle glass_____ Made from combined silicate of lime and Made from expanded aluminum-magnesium a au a aa a aa a_ a a * a a a a a aaa a a aaa Rock wool with a binding agent___________ Rock wool with flax, straw pulp, and binder From maple, beech and birch (coarse)_____ 1.50 9.40 103 1.50- 75 6.32 30.00 24.00 18.00 12.00 26.00 19.80 18.00 8.10 21.00 14.00 10.00 14.50 14.50 8.80 13.20 3.00 5.00 86 90 90 90 90 90 90 75 90 75 90 90 90 90 77 75 72 90 90 90 90 75 0.27 (3) 0.27 3.70 (1) 0.27 3.70 (3) (3) 0.29 1.00 0.77 0.59 0.44 0.60 0.52 0.48* 0.35 0.27* 0,31 0.30 0.28 0.27* 0,330.38 0.31 0.41 0.36 0,31 0.26 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 2.44 2.44 2.78 3.22 . 3.84 (3) (X) (1) (1) (1) (1) (1) (3) (1) (3) (1) (1) > n. U) (i) (3) (3) (1) (1) (1) (1) (3) aa a a a a Chemically treated hog hair covered with " * exploded wood 'fibers____ _____ Insulating plaster 9/10-in. thick applied to " " 85% magnesia and 15% asbestos " " shredded wood and cement Sugar cane fiber insolation blocks encased in aa aa aa aa aa aa aa aa 14.00 10.60 7.00 . 5.40 14.50 90 90 90 90 90 10.00 15.00 17:90 75 71 78 70 54.00 16.10 19.30 24.20 13.50 75 81 . 86 72. 70 13.80 17.00 15.90 15.00 8.50 15.20 16.90 70 68 72 70 52 72 90 0.30* 0.34 0.30 0.27 0.25 P.32 0.33* 0.28 0.33 0.32 l,07f 0,34 0.51 0.46 0.33 0.30 0.33 0.33 0.33 0.33 0.29 0.33 0.34 3.33 2.94 3.33 3.70 4.00 3.12 3.03 3.57 3.03 3.12 3.12 0.93 2.94 1.96 2.17 3.03 3.33 3.03 3.03 3.03 3.03 3.45 3.03 2.94 (1) (1) (1) (X) (1) (3) (3) (4) (3) (3) (3) (1) (3) (3) . (3) (3) (3) (3) (6) (3) (in3) Compressed cement and asbestos sheets_____ 123.00 86 Corrugated asbestos board_______________ 20.40 110 2.70 0.48 0.37 2.08 (1) (2) D e n s it t (Lb p e r Cd Ft) | A u t h o r it y | A utboritt Chapter 5. Heat Transmission Coefficients and Tables Table 2 Conductivities (k) and Conductances (C) of Building 1A ' Materials and Insulators3--Continued _. . ,-et.resttd in Btu per hour per square foot per degree Fahrenheit per t in. thickness The coefficients are express un/eM otherwise indicated. Material Description <5 abE0ZM3 daAW_5, S a S p p gg S9 oo oo 5 > SB HBh a o S3 88 PS ftj building boards --Continued Pressed asbestos mill board-------------------------- Gypsum between layers of heavy paper____ Rigid, gypsum between layers of heavy Gypsum mixed with sawdust between layers in.) (4 in > 60.50 62.80 53.50 60.70 ROOFING construction Asphalt, composition or prepared-. 70.00 Built up, bitumen and felt, gravel or slag Plaster board, gypsum fiber concrete and 3-ply roof covering 2^6 in. thick.. ____ 52.40 65.00 70.00 201.00 plastering materials Gypsum and expanded ahirninum-magne- Metal Lath and Plaster__ Wood Lath and Plaster___ BUILDING CONSTRUCTIONS Frak* 1-in. fir sheathing and building par*** 1-in. fir sheathing, building paper, and 1-in. fir sheathing, building paper and stucco Pine lap siding and building paper--siding 39.9 -- 40.00 AIR SPACE AND SURFACE COEFFICIENTS Over % in. faced ordinary building materials 3% in. faced ordinary building materials Horizontal, heat flow upward, e -- 0.83*_ -- Horizontal, heat flow downward, e -- 0.83* 3% in. faced reflective building materials Horizontal heat flow upward, = Q.05`__ -- Surfaces, Ordinary Horizontal, heat flow downward, e = 0.05` Horizontal heat flow upward, e -- 0.83(/i)* Vertical, e = O.R37 /ri* Horizontal heat flow downward, 0.83(f-M -- -- Surfaces, Rough Stucco Surface, RKvi.RrmvR For notes see Page 95. Horizon tal, heat flow upward, e -- 0.05(/i)` Horizontal heat flow downward, e = 0.05(/i)'_- -- 86 0.84 70 1.41 90 2.60f 90 3.60f 3.73f* 2.82t* 75 6.50t* 3.531* 1.33 76 0.58f 75 6.00t* 75 6.50f* 10.37* !> I.28t* 8.00 3.30* 75 0.85 73 8.80f 4.40f* 70 2.501* 30 0.86f 20 0.50f* 20 0.82 16 0.8Sf* 1.281* 75 1.20 1.361* l.lOt* 1.32 1.17 -- 0.94 0.56 0.41 0.17 l-65f - 1.951 1.521 1.211 6.001* 9. OOf 0.80f - 1.161 Q.741 0.44f 1.19 0.71 0.38 0.28 0.27 0.35 0.15 0.28 0.75 1.72 0.17 0.15 0.10 0.78 0.13 0.30 1.18 0.11 0.23 0.40 1.16 2.00 1.22 1.18 0.78 0.83 0.74 0.76 0.86 1.06 1.79 2.44 5.88 0.61 0.51 0.66 0.83 0.17 0.11 0.86 1.35 2.27 (1) (2) (3) (1) (I) _ (3) (2) (4) (3) 3) (7) (2) (3) (4) (4) (4) (4) (4) (4) (3) (4) (8) (8) (SI CS) (8) (8) (4) (8) (8) (8) (4) .(4) 8) 8) (8) (8)