Document N3bQ0dvr6YORbpGd8Brxg40D

Heating Ventilating Air Conditioning Guide 1938 Table 6. Coefficients of Transmission (Z7) of Frame Interior Walls and Partitions^ Coefficients ore 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 sttU air {no wind) conditions on both sides. TYPICAL CONSTRUCTION /n-ft/TeB. yStOTS IfU/TER, DOUBLE PARTITION (Finished on Both Sides of Studding) SmoLB Pabsttiok Wall No. (Finish on One Air. 8n>B or Space Studding) Between Studding Flaked GST Between Studding Rock Wool FID* Between Studding H-in. Flexible Insulation Between Studding (One Air Stud Space Faced One Side with Bright Aluminum Foil Space) Type of Wall Wood Lath and Plaster On Studding Metal Lath and Plaster* On Studding Plaster Board in.) and Plaster4 On Studding H in* Rigid Insulation and Plaster4 On Studding 1 in. Rigid Insulation and Plaster4 On Studding 1H in. Corkboard and Plaster4 On Studding 2 in. Corkboard and Plaster4 On Studding 77 78 79 80 81 82 83 .A 0.62 B 0.34 C 0.11 0.69 0.39 0.11 0.61 0.34 0.10 0.35 0.18 0.083 0.23 0.12 0.066 0.16 0.081 0.052 0.12 0.063 0.045 D 0.076 E 0.21 0.078 .0.23 0.075 0.21 0.063 0.14 0.054 0.097 0.044* 0.070 0.038 0.057 F 0.24 0.26 0.24 0.15 0.10 0.073 0.059 Computed from factors marked by * in Table 2. `Plaster on metal lath assumed H-in- thick. Thickness nnwl Z$i in. ^Plaster assumed M-in. thick. Table 7. Coefficients of Transmission (IT) of Masonry Partitions'! 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 still air (no wind) conditions on both sides. ' TYPICAL CONSTRUCTION flfU/ffKIC^ ___ No. Plain Wails (No Plasteb) Walia PlAWHlHWI on One Side Walls Plastered on Both Sides Type of Wall 4-in. Hollow Clay Tile' 4-in. Common Brick 4-in. Hollow Gypsum Tile 2-in. Solid Plaster 84 85 86 87 Computed from factors marked by * in Table 2. no A 0.45 0.50 0.30 -- B 0.42 0.46 0.28 -- C 0.40 0.43 ' 0.27 0.53 T a b l e 8. C o e ffic ie n ts of T ransmission U) of F rame Construction F loors and C e ilin g s **{ Coefficients are expressed in B tu per hour per square fo o t per degree Fahrenheit difference in tem perature between the a ir on the two sides, and are based on s till a ir (no w in d ) conditions on both sides. separated from lath and plaster ceiling by 1-in. furring strips* A ir space faced on one side w ith bright aluminum foil. Chapter 5. Heat Transmission Coefficients and Tables "1 111