Document x15x0JpXgZjB55B0YGnBYnY3b

American Society of Heating and Ventilating Engineers Guide, 1937 Table 2. Conductivities (k) 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. Description Material Fine Coarse Cement. Aggre gate Aggre gate Slump O-No. 4 No.4-M Expanded Btoned Clat Steam Treated Limestone Slag. Pumice Mined en Calif.. ____ By-Product of Manufacture of Phosphates................... . 1 1 1 1 1 8.00 7.00 8.00 8.00 8.00 Fineness Modulus 3.75 Per Cent Voids 18.4 27.1 26.5 25.5 21.1 57.9 74.6 6S.0 86.6 91.1 Haydite.. 1 8.50 1 8.50 21.8 21.8 67.1 67.1 Sand and gravel aggregate___ Sand and gravel aggregate used for calcu lations Cores filled with 5.14 lb density cork Crushed limestone aggregate---------------------- Cinder aggregate................... ...... .................... Cinder aggregate used for calculations--------- Cores filled with 69.7 lb density cinders____ Cores filled with 5.12 lb density cork............ Cores filled with 14.2 lb density rock wool-- Haydite aggregate............ ..................... ..... -- Cores fiIlea with 5.06 lb density cork______ 126.4 ISO" 86.2 67.7 au S5 !g* 75.57 2.28 74.49 2.27 74.68 2.42 74.62 3.19 74.43 3.42 75.89 2.89 74.60 2.815 40 0.900f l.OOOf 40 0.560f 40 0.856t* 40 0.577 0.600t` 40 0.390 40 0.250T' 40 0.266f 40 0.49St` 40 0.206 gT P5 Bg 0.44 0.44 0.41 0.31 0.29 0.35 0.34 l.ll 1.00 1.79 1.17 1.73 1.66 2.56 4.00 3.76 2.02 4.85 (0 8> 12 16>OMlca Sand and gravel aggregate............ ......... ....... Sand and gravel aggregate used for calcu lations___ Cinder aggregate Cores filled with 5.24 lb density cork______ Haydite aggregate------ Cores fillea with 5.6 lb density cork___ ___ 124.9 "8672" 7677" 40 40 40 40 40 0.777f 0.800f 0.531f 0.237f 0.468f 0.168f' (4 1.88 4.22 2.13 5.94 -prpjq_ >r- Cinder aggregate---------------- __------------------ 100.0 Double wall with 1 in. air space between____ 100.0 1 in. space filled with 9.97 lb density rock wool 100.0 40 40 40 l.OOIf 0.358t 0.204f 1.00 2.70 .4.90 5 x 8 x 12 block sand and gravel aggregate.- 133.7 40 0.380f 2.63 5 x 8 x 12 block sand and gravel aggregate*- 134.0 40 0.947f 1.06 For notes see Page 107. 108 Chapter 5- Heat Transmission Coefficients and Tables. Table 2. Conductivities (&) and Conductances (C) of Buzlding Materials and Insulators--Continued jfisisrits are expressed in Btu per hour per square foot per degree Fahrenheit Per 1 in. thickness. The coej/u. unless otherwise indicated. Density (Lb per Cu Ft) Conductivity (ky on Conductance (C) Material Description A.' aa 2CS 52 sB rh.rR B Bg g g5 a tf c5 aBnos u < masonry materials Baicx......... ...................... Brickwobx------.---------------Cement Mortar---------------Concrete.-------- ----------- Damp or wet................ ........ .......................... Typical fiber gypsum, 87.5% gypsum and 12.5% wood chips.. ............................... Special concrete made with an aggregate of 40.0 50.0 60.0 70.0 51.2 101.0 75 75 75 75 74 70 5.00* 9.20* 5.00* 12.00* 11.35to 16.36 1.06 1.44 1.80 2.18 1.66* 3.98 12.50* Typical hollow clay (6 in.)*.................. ......... Typical hollow clay (8 in.)*.... ...........-...... .. Hollow clay (2 in.))4-ia. plaster both sides.-- 12076" Hollow clay (4 in.) H-in. plaster both sides. 127.0 Hollow clay (6 in.) H-in. plaster both sides__ 124.3 51.8 75.6 nr 100 105 70 76 1.00 0.64 0.60 0.58 * 0.40 * 0.31 * 1.00 0.60 0.47 0.46 * 2.96 12.00 I N'SULATION--blanket OR FLEXIBLE TYPES - INSULATION--SEMIRIGID TYPE Fiber INSULATION--LOOSE fill or bat TYPE llllER Chemically treated wood fibers held between layers of strong paper/ Eel grass between strong paper/___ " * * " "____ _ . ___ Flax fibers between strong paper/______ ____ Chemically treated hog hair between kraft paper/., ............. ..... . Chemically treated hog hair between kraft paper and asbestos paper/..................... ,, Hair felt between layers of paper/. _____ Kapok between burlap or paper/ Jute fiber/ Ground paper between two layers, each 54-in. thick made up of two layers of kraft paper (sample 54-in. thick)- ............................... 3.62 4.60 3.40 4.90 5.76 7.70 11.00 1.00 6.70 12.1 70 90 90 90 71 71 '75 90 75 75 0.25 0.26 0.25 0.28 0.26 0.28 0.25 0.24 0.25 0.40f Flat/ Flax and rye/ Felted hair and asbestos/-. 75% hair and 25% jute/.._. .. ' 50% hair and 50% jute/_ Jute/.... .. Felted jute and asbestos/_________________ Comnrttwd p**at mms 11.00 12.10 13.60 7.80 6.30 6.10 6.70 10.00 11.00 90 0.26 70 0.30 90 0.32 90 0.28 90 0.27 90 0.26 75 0.25 90 0.37 70 0.26 1.60 75 0^24 0.20 0.11 0.20 0.08 0.94 0.69 0.56 0.46 0.60 0.25 0.08 0.08 1.00 1.57 1.67 1.72 2.50 3.23 1.00 1.67 2.13 2.18 0.60 0.34 0.08 4.00 3.85 4.00 3.57 3.85 3.57 4.00 4.17 4.00 2.50 3.84 3.33 3.12 3.57 3.70 3.85 4.00 2.70 3.84 4.17 For notes see page 107. (2) (5) (3) (3) (3) (3) (4) (3) (2) (2) (2) (4) (4) (3) in (i) u> (3) (3) (3) m (3) (4) (1) in (3) in in in C131> (h1)) (3)