Document 6R14wDMmRLbVvqNxaq604q7bR

1 Heating Ventilating Air Conditioning Guide 1938 Chapter 5. Heat Transmission Coefficients and Tables Table 2. Conductivities (ft) and Conductances (C) of Building Materials and Insulators--Continued The coefficients are expressed in Btu Per hour per square foot per 'degree Fahrenheit per 1 in. thickness unless otherwise indicated. T K o Conductivities (ft) and Conductances (C) of Building ' Materials and Insulators--Continued The coef_fic.ient.s are .rJyressed expressea in tn Btu per hour per square foot per vunUss otherwise indicated. degree Fahrenheit per i in. thickness. _______ Material Description Cement Fine Coarse *rAggre gate Aggre gate Slump 0-No. 4 No. 4-] Per Cent Voids - jo Material Description g i5? G -I- -|o o Is bgf! fe O Expanded Burned Clat____ Steam Treated Limestone Slap,. Pumice Mined in Calif By-Product of Manufacture nt Primpriws 1 1 1 ! 1 8.00 7.00 8.00 8.00 8.00 Fineness Modulus 3.75 18.4 2V.I 26.5 25.5 21.1 57.9 74.6 6S.0 86.6 91.1 75.57 2.28 74.49 2.27 74.68 2.42 74.62 3.19 74.43 3.42 0.44 0.44 0.41 0.31 0.29 4) (4) (4) masonry materials Brick-------- .------------- Cement Mortar-- Concrete-.------------- Low density.. High density. Damp or wet. Typical Various ages and mixes'*_ 5.00* 9.20* 5.00* 12.00* 11.35to 16.36 0.20 0.11 0.20 0.08 (2) Hatdite__ ______ j 8.50 1 8.50 21.8 21.8 67.1 67.1 75.89 2.89 74.60 2.815 0.35 0.34 (4) (4) Cellular... Cellular___ Cellular... 40.0 50.0 60.0 1.06 1.44 1.80 0.94 0.69 0.56 Sand and gravel aggregate 126.4 40 0.900f 1.11 (4) Cellular:--------------------------------- -------------- -- 70.0 Typical fiber gypsum, 87.5% gypsum and 2.18 0.46 Sand and gravel aggregate used for calcu lations l.OOOf 1.00 (4) 12.5% wood chips-------------------------------------- 51.2 Special concrete made with an aggregate of 1.66* 0.60 Cores filled with S.14 lb density cork 40 0.560f 1.79 (4) hardened clay--1-2-3 mix_________ 3.98 0.25 Crushed limestone aggregate-___ _ 134.3 40 0.856V 1.17 (4) Typical 12.50* 0.08 `IT ; w Cinder aggregate= Cinder aggregate used for calculations______ Cores filled with 69.7 lb density cinders____ 86.2 40 40 0.577 0.600V 0.390 1.73 1.66 2.56 4) (4) (4) Stucco---- Tile._______ Typical Typical hollow clay (4 in.)------------------------ Typical hollow clay (6 in.)*------------------ 12.00* l.OOf* 0.64f 0.08 1.00 1.57 f Cores filled with 5:12 lb density oork______ Cores filled with 14.2 lb density rock wooL.TM Haydite aggregate__ -__ L_ ' 67.7 40 40 40 0.250V 0.266V 0.495V 4.00 3.76 2.02 (4) (<) (4) Typical hollow day (8 in.)* -------- ---------- Typical hollow day (10 in.)*------------------- Typical hollow day (12 in.)*-------------------- 0.60t* 0.58f 0.40V 1.67 1.72 2.50 f .Cores.fillea with 5.06 lb density cork__-___ 40 0.206 4.85 (4) Typical hollow day (16 in.)*-------------------Hollow day (2 *m.)H-m- plaster both sides.- 120.0 0.31V l.OOf 3.23 1.00 Hollow day (4 in.) J^r-in. plaster both sides._ 127.0 0.60f 1.67 ; Hollow day (6 in.) J4-in. plaster both sides-- 124.3 0.47f 2.13 > Sand and gravel aggregate 124.9 40 0.777f 1.29 (4) Hollow gypsum (4 in.)-------------------------- 0.46f 2.18 Sand and gravel aggregate used for calcu lations: 0.800V Solid gypsum---------------------------Solid gypsum----------------------------------------- --51.8" 75.6 1.66 2.96 0.60 0.34 Cinder aggregate,,_^______________ _ 86.2 Cores filled with 5.24 lb density cork____. 40 40 0.5311* 0.237V 1.88 4.22 4) 4) Tile oa Terrarzo_____ Typical flooring------------------------------------- -- 12.00* 0.08 Haydite aggregate Cores filled with 5.6 lb density cork "76.7 40 40 0.4681 0.168f 2.13 5.94 4) 4) 1NSULATION--BLANKET OR FLEXIBLE TYPES " Fiber_______:....................... Typical-- 0.27* 3.70 Chemically treated wood fibers held between ; layers of strong paper/ Eel grass between strong paper/-- Flax fibers between strong paper/.- 3.62 4.60 3.40 4.90 0.25 0.26 0.25 0.28 4.00 3.85 4.00 3.57 (3) (1) 0) (1) CSnder aggregate______ _ 100.0 40 l.OOOf 1.00 Double wall with 1 in. air spaee between. 100.0 40 0.358f 2.70 *r- 1 in. space filled with 9.97 lb density rock wool 100.0 40 0.204f 4.90 \ Chemically treated hog hair between kraft paper/. Chemically treated hog hair between kraft paper and asbestos paper/ ---------------------Hair fdt between layers of paper/--------------Kapok between burlap or paper/.----------- Jute fiber/. Ground paper between two layers, each 5.76 7.70 11.00 1.00 6.70 0.26 0.28 0.25 0.24 0.25 3.85 3.57 4.00 4.17 4.00 (3) (3) (3) (1) (3) thick made up of two layers of kraft paper 1 (sample J^-in. thick)_____ ----------- ;--------- 0.40f (4) 5 z 8 z 12 block sand and gravel-aggregate :( 1! Siffin 5 x 8 x 12 block sand and gravel aggregate6. 0.380f- (4) 0.947f (4) INSULATION-SEMI RIGID TYPE Fiber.________________ INSULATION--LOOSE FILL OR BAT TYPE Fiber-________________ Felted cattle hair/-. Fkx/_ Flax and rye/_____________ Felted hair and asbestos/-- 75% hair and 25% jut/__ 50% hair and 50% jut/-- Jute/-- Felted jute and asbestos/-. Compressed peat moss--------- Made from ceiba fibers/-. 13.00 11.00 12.10 13.60 7.80 6.30 6.10 6.70 10.00 11.00 1.90 1.60 0.26 0.26 0.30 0.32 0.28 0.27 0.26 0.25 0.37 0.26 3.84 3.84 3.33 3.12 3.57 3.70 3.85 4.00 2.70 3.84 0.23 0.24 4.35 4.17 For notes see Page 97. 98 For notes see page 97. 99