Document wgqe1GV5Jn2YwMmLGnZdrenLd

American Society of Heating and Ventilating Engineers Guide, 1937 Table 2. (C)Conductivities (k) and Conductances of Building ContinuedMaterials and Insulators-- The coefficients are expressed in Btu per hour per square foot per degree Fahrenheit per l in. thickness, unless otherwise indicated. D ensitt (L b per C u Ft) 1 Material Description Si'S? an *a Is ss H5 Eg3 SB pa 2 pa2 oo oo -i-* Tg i| H pi a INSULATION--LOOSE FILL OR BAT TYPE --Continued Fiber_____ _______ Glass Wool__________ - Granular Fibrous material made from dolomite and silica ..... .............. ........ 'Fibrous material made from slap . Fibrous material 25 to 30 microns in dia- meter, made from virgin bottle glass_____ Made from combined silicate of lime and alumina___ Made from expanded aluminum-magnesium silicate__ ___________ *" Flaked, dry and fluffy/_____________________ * *" " a aa a mama 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 75 103 75 72 42 90 90 90 90 90 90 75 90 75 a u aua a a *aa m a aaa Rock wool with a binding agent _ Rock wool with flax, straw pulp, and binder Rock wool with vegetable fibers From maple, beech and birch (coarse). Redwood bark______________________ __ ____ 8.10 21.00 18.00 14.00 10.00 14.50 14.50 11.50 12.00 8.80 13.20 3.00 90 90 90 90 90 77 75 72 90 90 90 90 INSULATION--RIGID Nn added hinder am a aa aa a a Asphaltic binder .................. . 14.00 10.60 7.00 5.40 14.50 90 90 90 90 90 Chemically treated hog hair covered with film nf aanhalt. Made from corn stalks------- " * exploded wood fibers___ * * hard wood fibers___ Insulating plaster 9/10-in. thick applied to H-in. plaster board base________ .. . Made from licorice roots Made from 85% magnesia and 15% asbestos Made from shredded wood and cement- * * sugar cane fiber- Sugar cane fiber insulation blocks encased in asphalt membrane Made from wheat straw _ " wood fiher "" mm aa mm am aa aa as am 10.00 15.00 17.90 15.20 54.00 16.10 19.30 24.20 13.50 13.80 17.00 15.90 15.00 8.50 15.20 16.90 75 71 78 70 75 81 86 72 70 70 68 72 70 52 72 -- 90 BUILDING BOARDS Asbestos____ Compressed cement and asbestos sheets___ Oomirated asbestos hoard 123.00 86 20.40 no 0.27 0.27 3.70 3.70 0.27 3.70 0.24 4.17 0.32 3.12 1.00 1.00 0.77 1.30 0.59 1.69 0.44 2.27 0.60 1.67 0.52 1.92 0.48* 2.08 0.35 2.86 0.34 2.94 0.27* 3.70 0.31 ^ > 3.22 0.30 3.33 0.29 3.45 0.28 ' 3.57 0.27* 3.70 0.33 3.03 0.38 2.63 0.31' 3.22 0.41 2.44 0.41 2.44 0.36 2.78 0.31 3.22 0.30* 0.34 0.30 0.27 0.25 0.32 0.33* 0.28 0.33 0.36 0.32 1.07f 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 2.70 0.48 0.37 2.08 For notes see Page 107. no Chapter 5- -Heat Transmission Coefficients and Tables Table 2. 1 Conductivities (k) and Conductances (C) of Building ContinuedMaterials and Insulators-- The coeffic nr, expressed in Btu per hour per square foot Per degree Fahrenheit per 1 in. thickness unless otherwise indicated. Material Description rh.rR S p o 2 1* q6 aa g3 is sS g Eg* SB Pa Ozo Paz> ge t 5 E ggn 3 I 1 < BUILDING boards --Continued AsBBaTOS--------- -------Gtpsum------------------- Plaster Boahd. Pressed asbestos mill boardSheet asbesto; Gypsum between layers of heavy paperTM Rigid, gypsum between layers of heavy paper 04-ia- thick)---------------------------------Gypsum mixed with sawdust between layers of heavy paper (0.39-in. thick)_________ (H in.)--------------------------------------------------- (M in-)----------------------------------------------- 60.50 48.30 62.80 86 110 70 53.50 90 __ _60.70 90 -- TM 0.84 0.29 1.41 2.60t 3.60t 3.73f* 2.82f* 1.19 3.45 0.71 0.38 0.28 0.27 0.35 (i) (2> (3) (I) (1) -- -- roofing construction Roofing---------------------- Asphalt, composition or prepared Built up--in. thick Built up. bitumen and felt, gravel or slag 70.00 -- 75 -- 6.50f* 3.53f* 0.15 0.28 surfaced*____________ --_____________ __ -- -- 1.33 0.75 Plaster board, gypsum fiber concrete and 3-ply roof covering-2^ in. thick 52.40 76 0.58f 1.72 Shingles. Asbestos. Asphalt. Slate...... 65.00 75 6.00f* 0.17 _70.00 75 6.50f* 0.15 201.00 10.37* 0.10 Wood___ -- _ 1.28f* 0.78 (3) -- (2) <<> (3) (3) b) PLASTERING MATERIALS Plaster1_______ --............-- Cement Gypsum, typical................ ......................... Thickness in..... .............. ............ ........... Metal Lath and Plaster-- Total thinknera in___________________ Wood Lath and Plasteb------ %-in. plaster, total thickness *A in______ __ 8.00 3.30* 0.13 0.30 (2) __ 73 8.80t 0.11 (4) ____ 4.40f* 0.23 -- 70 2.50f 0.40 (41 BUILDING CONSTRUCTIONS Frame.TMTM------------- Flooring. 1-in. fir sheathing and building paper 1-in. fir sheathing, building paper, and yellow pine lap siding... 1 -in. fir sheathing, building paper and stucco Pine lap siding and building paper--siding 4 in. wide --...... ............................... ........... Yellow pine lap siding_____ Maple--across grain_______ Battleship linoleum (JA-in.). -- 40.00 -- 30 20 20 16 __ 75 -- 0.7tf* 0.50|* 0.55 0.85f* 1.28f* 1.20 1.36f* 1.41 2.00 1.82 1.18 0.78 0.83 0.74 AIR SPACE AND SURFACE COEFFICIENTS Am Spaces Over Jtf-in. faced with ordinary building materials........ ................. 40 1.10f* 0.91 Surfaces, Ordinabt __ _Still air (fi)_______ _________________________ ____ .... 1.65f* 0.61 IS mph--(/o)________________________ _ 6.00t* 0.17 Surface, Rough Stucco.___ 15 mph--(Jo)_____________________ 9.00t* 0.11 Surface, Bright Aluminum Still air (Ji) -- 60 1.18t 0.85 AIR SPACES FACED WITH BRIGHT ALUMINUM Air space, faced one side with bright alumi num foil, over $i-in. wide Air space, faced one side with bright alumi num foil, H-in. wide__. Air space, faced both sides with brightaiuminum foil, over -in. wide Air space, faced both sides with bright aluminum foil, 3^-in. wide For notes see Page 107. Ill -- -- 50 0.46f 2.17 50 . 0.62t 1.61 50 0.41t* 2.44 50 0.57f 1.75 (4) (4) (4) () (3) -- (4) (4) (4) (4) (4) (4) (4) (4)