Document OyVqRmxRdw74Qo2xJJRzp1QX

HEATINC VENTILATING AIR CONDITIONING GUIDE 1940 Table 2. Conductivities (A) and Conductances (C) of Building Materials and Insulators0--Continued The coefficients ore expressed in iitu per hour per square foot per degree Fahrenheit per t in. thickness unless otherwise indicated. Material Description $5 J!S $ c g5 TT 1n| hP pp 5 6 gI Q6 soa S3 PS BUILDING CONSTRUCTIONS 1-in. fir sheathing sod building paper---------- -- 30 0.86f 1.16 ( 1-in. fir sheathing, building paper, and 20 0.50f* 2.00 (4) 1-in fir nhftathing, building paper and stucco -- 20 (4) Pine lap siding and building paper--siding 16 0.85f* 1.18- (4) 40.00 Battleship linoleum (H in-)----- --------------- -- 75 -- 1.28T* 1.36f* 0.78 0.83 0.74 (T) -- AIR SPACE AND SURFACE COEFFICIENTS Over H 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* in- faced reflective building materials Horizontal; heat flow upward, e 0.05*-- --- Surfaces, Ordinart------------ Horizontal, heat flow downward, e =* 0.05* Horizontal, heat flow upward, e * 0.830S)* -- -- Horizontal, heat flow downward, Surfaces, Rough Stucco____ Huriiontal hit flow upward, a - 0.05(A)' Vertical, e = O.OSf/i)4------------ ---------------Horizontal, heat flow downward, . e = 0.05(/O' ___ ________________ -- AIR 8PACES FACED WITH Air space, laced one side with bright ahuni- BRIGHT ALUMINUM FOIL Air space, faced one side with bright alumi- Air space, faced both aides ^with bright -- Air space, faced both rides with bright Air space divided in two with single curtain / of bright aluminum foil (both rides bright) tnrh nfnrc Air space with multiple curtains of bright aluminum foil, bnght on both rides, curtains more than in. apart, air circu lation between spaces prevented: 2 curtains, forming 3 spaces.-------------- -- 4 curtains, forming 5 spaces,. ........ -- 40 l.lOf 0.91 (4) - 1.32 1.17 0.94 0176 0.86 (8) ! (8) - 0.56 0.41 1.79 2.44 (8) 8) -- 0.17 1.65f* 0.61 (8) (4) 0.51 (8) -- 2.52f 0.66 (8) l.ilf 0.83 (8) _ 6.00f* 0.17 (4) __ y.uuf 0.11 (4) 1.25 (8) 1.16t 0.86 (8) - 0.74f 1.35 (8) 0.44f 2.27 (8) 50 0.46f* 2.17 (4) 50 0.62f 1.61 (4) 50 0.41f* 2.44 (4) 50 0.57t 1.75 (4) 50 ' 0,23f* 4.35 50 ( (4) 50 o!l5f* 6.78 ' (4) 50 O.llf* 9.22 (4) 50 11.66 (4) SPACES FACED WITH NON- Fabric with non-metallic reflective surface METALLIC PAINT (16 in. thick) placed in center of a lH in. SURFACE Core of fiber board coated two rides with non-metallic reflective surface (M m- thick) placed in space having approxi mately K in. air space on each ode-------- Fiber board coated one ride with non- metallic reflective surface ia. thick) placed in space having approximately % in. air space on each side----------------- 23.4 70 0.33f 70 0.27t 75 0.49t 3.03 3.70 2.04 (3) (3) (3) For cotes see Page 94. A u tb o b itt Autbobitt CHAPTER 5. HEAT TRANSMISSION COEFFICIENTS AND TABLES Table 2. Conductivities (k) and Conductances (C) of Building Materials and Insulators3--Continued The coefficients are expressed in Btu per hour per square foot per degree Fahrenheit per t in. thickness unless otherwise indicated. Material Description D|4k D Im o-e. aS uA. ia od SPACES FACED WITH NON- Air space divided in two with fabric faced metallic PAINT both sides with non-metallic reflective SURFACE--(Continued) surface, each space over in. wide__-- Air space over in. wide faced one side with non-metallic reflective surface.______ -- WOODS (Across Grain) California Redwood____-- 0% moisture 0% * 16% . 16% . _______ _. 8.8 7.3 22.0 28.0 22.0 28.0 Eastern Heblock________ 16% 16% * mnteftiM 0% * _ '6% * 16% * Longleaf Yellow Pine_____ o% 16% * 16% ` 0% moisture 0% * - 16% * . 16% * . 34.0 26.0 34.0 22.0 30.0 22.0 30.0 46.0 40.0 _ 46.0 30.0 40.0 30.0 40.0 44.3 0% 16% 16% *---------------------------------- 32.0 . ... . 22.0 - - 32.0 0% 16% ** Red Oaf 0% * - __Shobtleaf Yellow Pine 16% _ 0% moisture0% * 16% " - Soft Rt.u Soft Mapt.e Bcgab Pine Virginia Pine__________ West Coast Hitm-wc o% 16% 16% *_ *- ... 0% 16% 16% *- ** ..... 0% 16% 16% ...................... . ` *_ ... 0% moisture.. _ Write Pine Yellow Pine Yellow Pine ob Fir 16% 32.0 22.0 32.0 48.0 38.0 48.0 26.0 36.0 26.0 36.0 34.0 28.0 34.0 42.0 36.0 42.0 28.0 22.0 28.0 34.3 22.0 30.0 22.0 30.0 31.2 For notes.see Page 94. nn S'? 3g Sb 3B fc B ee PP ogo ugo ~l-" ee t3 Sg 11 40 0.33f 3.03 (4) 40 0.67f 1.49 (4) 90 90 0.38 90 0.33 75 0.66 75 0.70 75 0.74 75 0.80 86 0.67 75 75 0.67 75 0.76 75 0.82 75 0.60 75 0.76 75 0.67 75 0.85 75 75 1.05 75 1.25 75 1.21 75 0.76 75 0.86 75 0.89 75 1.03 75 0.74 75 0.74 75 0.91 75 75 0.79 75 0.74 75 0.90 75 75 1.18 75 1.07 75 1.29 75 0.74 75 0.91 75 0.84 75 1.04 75 0.88 75 0.81 75 0.97 75 0.95 75 1.01 75 1.09 75 0.64 75 0.65 75 0.78 86 0.96 75 0.68 75 0.79 75 0.78 75 0.91 86 0.80* 2.63 3.03 1.53 1.43 1.35 1.25 1.49 1.64 1.49 1.32 1.22 1.67 1.32 1.49 1.18 0.95 0.87 0.83 1.32 1.16 1.12 0.97 1.35 1.35 1.10 1.27 1.35 1.11 1.02 0.85 0.94 0.78 1.35 1.10 1.19 0.96 1.14 1.24 1.03 1.05 0.99 0.92 1.56 1.54 1.28 1.04 1.47 1.27 1.28 1.10 1.28 1.25 (1) (1) (U (4) (4) (41 (4) (1) (4) (4) 14) (4) (4) (4) (4) (4) (4) (4) (4) (4) (4) (4) (4) 4) (1) a) (4) (4) (4) (4) (4) (4) (4) (4) (4) (4) (4) (4) (4) (4) (41 (4) (4) (4) (4) (4) (4) (4) (4) (4) (4) (4) (4) (4) (1) (4) (4) (4) (4) (1) (3)