Document DRvOQgynO5BEVpwbv5xGEZa5

American Society of Heating and Ventilating Engineers Guide, 1929 Table 5. Internal Conductivities of Building Materials and Insulations'--Continued Material Description Density (Lb. per Cu. Ft.) Mean Temp, of Sample (Dbg. Fake.) Internal Conduc tivity (C OR Cu) Authority10 4 in. Hollow Clay TUe..... .......... 6 in. Hollow Clay TUe.. _ ... 8 in. HoUow Clay TUe.;____________ 12 In. HoUow Clay -- ----- -- Tile 16 in. HoUow Clay Tile 13.5 110 Magnesia (85 per 19.3 86 cent) and Asbes tos (15 per cent). Plaster___________ _ Gypsum........ ........ 46.2 86 layers of heavy paper. Roofing0___________ Built-up bitumen and felt, gravel 62.8 70 86 Built-up bitumen and felt, gravel or slag surfacedTM Composition or Ordinary__ _______ Gypsum mixed with sawdust be tween layers of heavy paper (0.39 in. thick). 60.7 -- 75 86 86 90 201 Sandstone. Wood lath and plaster1*. Woods: Lime plaster______ Across, grain______ Across grain..,, ...... Mahogany_______ Across grain______ Oak. ................... Virginia Pine____ Across grain.______ 28.7 33.4 40.0 34.3 42.0 34.3 31.2 75 86 75 86 86 75 86 86 0.65* 0.50* 0.43* 0.26* 0.185* 0.51 0.508 2.3211 8.0011 1.41 3.04 1.325* 5.30*-* 6.50* 1.04 0.707 3.60* 10.37 10.0 8.00* 2.0* 0.668 1.000 1.20 1.103 0.900 1.30 0.958 0.784 1.000 Estimated Willard, Lichty & Harding Bureau of Standards Willard, Lichty & Harding Peebles. Armour Institute Willard. Lichty &.Harding Willard, Lichty & Harding Willard, Lichty & Harding Peebles, Armour Institute Willard, Lichty & Harding Bureau of Standards Peebles, Armour Institute B. Insulations (Dry) Balsa wood Across grain Balsa wood______ __ Across grain______ Balsa wood Across grain Balsam wool10_____ Chemically treat ed wood fiber. Cabots quilt1 ___ Eel grass between - Kraft paper. Cabots quilt10_____ Eel grass between Kraft paper. Celotex Board form insu lation made from sugar cane fiber. Celotex.____ Board form insu lation made from sugar cane fiber. See footnotes 1 to 14 on p. 15. 20.0 8.8 7.3 2.2 4.6 3.4 13.5 13.2 90 90 90 90 90 90 70 90 16 0.58 0.38 0.33 0.27 0.26 0.25 0.33 0.34 Bureau of Standards Bureau .of Standards Bureau of Standards Bureau of Standards Bureau of Standards.- Bureau of Standards Peebles. Armour Institute Bureau of Standards Chapter I--Heat Losses from Buildings Table 5. Internal Conductivities of Building Materials and Insulations'--Continued B. Insulations (Dry)--(Continued) ------ * Material Description Density (Lb. per Cu. Ft.). Mean Temp, of Sample (Deg. Fahr.) (C or Cu) Authority10 Corkboard-------------- Pure; no added Corkboard-------------- Pure; no added Corkboard..----------- Pure; no added Corkboard-------- -- Pure; no added Kapok between Flax and rye fiber- Hairinsul10-----------$ 75 per cent hair___ } 25 per cent jute__ _ Hairinsul10-......--| 50 per cent hair___ | Homavite Building Wall Board made Board (56' thick) from paper pulp. Inso Board------- -- Board form Insu* lation made from wheat straw. Cellular Gyspum__ Cellular Gypsum-- Cellular Gypsum. Cellular Gypsum-- Cellular Gypsum__ .Cellular Gypsum-- Cellular Gypsum__ Cellular Gypsum-- lation made from wood pulp. Insulite.___________ Board form insulation made from wood pulp. Keystone Hair10___ tween paper. Rock wool, flax and straw pulp Lith.... .............. . and straw pulp Maftex__ lation made from exploded wood fiber. Board form of ins u 1 a t i o n made from roots of Regrahulated Cork.. About % in. par- Rock-Cork................ Rock Wool and Waterproof RockWool10. --__ Fibrous material, made from rock. Also made in sheet form, felted and confined . with netting. 14.0 10.6 7.0 9.7 2.0 13.6 13.0 14.0 6.3 6.1 13.0 11.0 22.9 17.0 30 .'0 30.0 24.0 24.0 18.0 18.0 12.0 12.0 16.9 16.5 11.0 4.9 14.3 14.5 18.0 16.1 8.1 16.7 10.0 See footnotes 1 to 14 on p. 15. 90 90 90 90 90 90 70 90 90 90 90 70 6S 90 75 90 75 90 75 90 75 90 . 70 75 90 90 75 75 81 90 86 90 0.34 Bureau of Standards 0.30 Bureau of Standards 0.27 Bureau of Standards 0.32 Willard, Lichty & Harding 0.25 Bureau of Standards 0.32 0.31 0.32 0.27 ' Bureau of Standards Bureau of Standards Peebles. Armour Institute ' Bureau of Standards 0.26 0.26 0.26 0.40 Bureau of Standards Bureau of Standards Bureau of Standards Peebles, Armour Institute 0.33 Peebles, Armour Institute 1.00 0.92 0.77 0.737 0.59 0.566 0.44 0.400 0.34 Bureau of Standards Peebles, Armour Institute Bureau of Standards Peebles, Armour Institute Bureau of Standards Peebles. Armour Institute Bureau of Standards Peebles. Armour Institute Bureau of Standards 0.34 Peebles, Armour Institute 0.25 0.28 0.40' Peebles, Armour Institute Bureau of Standards Bureau of Standards 0.3S Peebles, Armour Institute 0.33 Peebles. Armour Institute 0.337 Peebles, Armour Institute 0.31 0.37 0.27 Bureau of Standards Bureau of Standards. Bureau of Standards 17 S