Document 1yN3bNNyn587bL5dKXLmNBZ15

96 Chapter 4 "1945 Guide ( )Table 6. Coefficients of Transmission U of:Masonry~Walls~'------------ Coefficients are expressed in Blit per how per square foot per degree Fahrenheit difference in temperature between the air on the two.sides, and are based on a wind velocity of 15 mph. INTERIOR FINISH (Plus Insulation Where Indicated) M TYPE OF MASONRY S-s *8 -I | nI 3 3l a| .a I5 1*1 gj 9 j? OCL l| 5 a .r a_ a ko <o &N k k\ I 0.50 0.46 0.32 031 0.30 0.22 0.22 0.16 0.14 0.35 0.34 0.25 035 0.24 0.19 0.19 0.14 0.13 038 0.27- 0.21 0.21 030 0.17 0.16 0.13 0.12 0.40 0.37 037 0.27 036 0.20 0.20 0.15 0.13 0.39 037 0.27 037 0.26 030 0.19 0.15 0.13 0.30 039 032 032 031 0.17 0.17 0.13 0.12 035 0.24 0.19 0.19 0.19 0.16 0.15 0.12 0.11 97 (Table 7. Coefficients of Transmission U).of Brick and Stone Veneer _ -----------1-------- Masonry. -Walls_________________________ Coefficients are expressed in Btu per hour per square foot per degree Fahrenheit difference in temperature between the air on the two sides, and are based on a wind velocity of 15 mph. 0.70 0.64 039 038 036 036 0.25 0.18 0.16 037 033 035 034 033 0.24 033 0.17 0.15 0.49 0.45 032 031 030 032 032 0.16 0.14 037 035 0.26 036 0.25 030 0.19 0.15 0.13 0.79 0.71 0.42 0.41 039 0.27 036 0.19 0.16 0.70 0.64 039 038 036 036 035 0.18 0.16 0.63 038 037 036 034 0.25 0.24 0.18 0.15 038 0.53 0.35 034 033 034 033 0.17 0.15 78 79 80 81 Gravel Aggregate 8 036 032 034 034 032 034 0.19 0.17 0.15 82 12 030 0.46 032 0.31 030 032 032 0.16 0.14 83 ss Cinder Aggregate "s 8 . 0.41 039 0.28 0.28 037 031 030 0.15 0.13 84 12 038 036 036 036 035 0.20 0.19 0.15 0.13 65 ao light* Weight Aggregate 8 036 034 036 035 034 0.19 0.19 0.15 0.13 88 12 0.34 0.33 0.25 034 0.24 0.19 0.18 0.14 0.13 87 Based on 4 in. hard brick and remainder common brick. 6The 8 in. and 10 in. tile figures are based on two cells in the direction of heat flow. The 12 in. tile is based on three cells in the direction of heat flow. The 16 in. tile consists of one 10 in. and one 6 in. tile each having two cells in the direction of heat flow. Limestone or sandstone. dThese figures may be used'with sufficient accuracy for concrete walls with stucco exterior finish. Expanded slag, burned clay or pumice. /Thickness of plaster assumed M in. 'Thickness of plaster assumed M in. * Based on 2 in. furring strips; one air space. These figures may also be.used for wood or metal fath. % A y V `Calculations based on M in. cement mortar between backing and facing except in the case of the concrete backing which is assumed to be poured in place. *The hollow tile figures are based on two air cells in the direction of heat flow. Hollow concrete blocks. dExpanded slag, burned clay or pumice. , "Thickness of plaster assumed M in. /Thickness of plaster assumed M in. on 2 in. furring strips; one air space. The figures in this column may also be used for wood or (