Document 93Oo0BGkD0Zx5JaELnqXraZNe

HEATING VENTILATING AIR CONDITIONING' GUIDE 1942 Table 6. Coefficients of Transmission (U) of Frame Interior Walls and Partitions0 Coefficients are expressed in Bln per hour per square foot per detree Fahrenheit difference in temperature between the air on the two sides, and are based on stiU air (no wind) conditions on both sides. TYPICAL CONSTRUCTION ^TLA/TER. wroiy 1. *ru rtt a #*/e^ Type op Wall Wood Lath and Plaster On Studding Metal Lath and Plaster* On Studding Plasterboard (X In.) and Planter* On Studding Plasterboard (% in.) and Plaster4 On Studding--bright aluminum foil ce mented to plasterboard on surface nailed to studding H in. Rigid Insulation and Plaster4 On Studding 1 in. Rigid Insulation and Plaster4 On Studding IH in. Corkboard and Plaster4 On Studding 2 in. Corkboard and Plaster4 On Studding Wall No. Single Partition (Finish on One Side or Studding) DOUBLE PARTITION (Finished on Both Sides or Studdino) Air Space Between Studding Gj?srFlaked Between Studding Rock Wool Fill6 Between Studding Flexible Insulation Between Studding (One Air Space) A 77 0.62 78 0.69 79 0.61 B 0-34 0.39 0.34 C 0.11 0.11 0.10 D 0.076 0.078 0.075 E 0.21 0.23 0.21 80 0.42 81 0.35 82 0.23 83 0.16 84 0.12 0.24 0.16 0.18 0.033 0.12 0.066 0.081 0.052 0.063 0.045 0.063 0.054 0.044 0.038 0.14 0.097 0.070 0.057 Computed from factors marked by * in Table 2. Thickness assumed in. 'Plaster on metal lath assumed X in. thick. ^Plaster assumed X in. thick. Table 7. Coefficients of Transmission (U) of Masonry Partitions* Coefficients are expressed in Bttt 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 CONSTBCCTION 0\A/CtU.Y^ m Walls Walls Plain Walls Plastered Plastered No. (No Plasteb) on One Side on Both Sides Type of Wall 4-in. Hollow Clay Tile 4-in. Common Brick 4-in. Hollow Gypsum Tile 2-in. Solid Plaster 85 86 87 88 Computed from factors marked by * in Table 2. 104 A 0.45 0.50 0.30 -- B 0.42 0.46 0.28 --; C 0.40 0:43 0.27 0.53 CHAPTER 4. HEAT TRANSMISSION COEFFICIENTS AND TABLES O O V a a 4e> V JS k a e* c r 8 J3 k o k V 3 <0 tc .G i C ;c i-Sig ! 2:g !T'.; j63 J 3 :i i Sc 5 105 separated from la th and plaster ceiling by 1 in. furring strips. B rig h t alum inum fo il cemented to plasterboard