Document zz307zZ3n3MjaL0QBJ8Gay016

American Society of. Heating and Ventilating Engineers Guide, 1930 Table 27. "Coefficients of Transmission (U) of Brick Veneer Frame Walls .Note --Thbsb coefficients are expressed in B.t.u. per hour per square foot PER 1 DEC. FAHR. DIFFERENCE IN TEMPERATURE BETWEEN THE AIR ON THE TWO SIDES AND ARE BASED ON AN OUTSIDE WIND EXPOSURE OP 15' MILES PER BOUR. Thevalues of U in this Table are basedonthefollowing Internal Conductivities or Conductances which are. expressed tn&.tu.per Ur.perSq.Ft. per l*F_ Wood (Yellow Pineor Fir) 1.00 per Plaster (Gypsum) 2.32 perl" Plaster board 3.73 per 4" Cork, board Wood Lath i Plaster Eiqtd Insulation (Boardforoi) 2.80 peri 0.30 per l" 2.00 asapplied 0.33 per C Flexible Insulation Cellular Gypsum (t&*) Flaked Gypsum (24*) Brick. Ol 11 per 1" 0.54 perl" 0.48 per I" 5-00. per 1" Typical Construction x4" Studs. 4" Cement Mortar - Type or . Sheathinq Insulation between Studdinq Plaster Base Wood Metal i R-iaid ("Biqtd If i* Lath Lath blaster Insuia- Insula- Cork. Cork. board -tion -tion board board A B C D E F. G Mone 0.247 0.258 0.248 0.18*1 0.147 QU4 Q087 I* Wood b flaked Gypsum Fill (24*) a 0.0*14 0.0*15 0.0*14 0.084 0.075 0.065 0.058 CetlutarGijpsum Fill (18*) a_c 0.108 o. no 0.108 0.045 0.083 0.072 0064 f flexible Insulation 0.147 0.150 0.147 0.12* 0.105 0.087 0.076 i. Eiqid Insulation (board form) None flaked Gypsum fill (24*) a 0.204 0.217 0.210 0.166 0.133 0.106 0.040 0.087 0.088 0.087 0.074 0071 0.062 0.056 Cellular Gypsum fill (l&*) rt-c 0.100 0102 0.101 0084 0074 0.068 0.061 T Flexible Insulation 0.133 a 136 0.133 0.114 0048 0.082 0.072 i Piaster board None 0.276 02*10 0277 0.206 0.157 0.120 CUOO flaked Gypsum Fill (24*) a 0.038 0.100 0.0*18 0.087 0.Q77 0.067 0.060 Cellular Gypsum fill (18*) a-c 0.113 0115 0.113 0.10?) 0086 0.074 0.066 VfUxiW^ Insulation 0.157 0.161 0.157 0.131 0.104 0.010 0074 Thickness of fill assumed 3M in., based on 2 in. by 4 in. studding. bBased on_E6 in., the actual thickness of 1 in. or Ji in. sheathing. Building paper neglected -. cThe coefficient used for cellular gypsum. 0.59 is for 18 lb. weight--weights as low as 12 lb. may be used. Chapter 2--Heat Losses from Buildings Table 28. Coefficients of Transmission (U) of Interior Walls and Partitions Nnte --These coefficients are expressed in B.t.u. per hour per square foot per 1 dec. fahr. nnHCRENCB IN TEMPERATURE BETWEEN THE AIR ON THE TWO SIDES AND ARE BASED ON STUX-AJS (NO WIND) CATIONS ON BOTH SIDES. / PLA.5TEREVD FB.AME PARTITIOMS The valuesof U in this Table are basedon thefollowing Internal Conductivities or Conductances I whichare expressed in 6.t.u. per Hr. perSq.Ft. per l*F. Studding' Plaster (Gvpsurn) ZTZ perT Plaster board 3.73 per7* WoodLathi Raster 2.05as :pia*t*r- appM On both sides of Studding StudAmq - Insulation between Studding Insulation^ Gypsum.fill between Studding Gypsum fill . QiqidInsulation(Board0f.o3r3mp)erl' Flexible Insulation 0.27perl* Corfc.board O.SOperrj Cellular Gypsum (ijr)CtSRperP flakedGypsumDry (24*) I 0.48perf fa* ipjadT] iA* iXjI? flexible Cellular flaked Gypsum Gypsum' I (2joar4 Insulation fill a*d Fill * form) Planter fcase Metal Lath 1 Wood Lath c f Plasterboard c L*U.iqidlri3ulahon (Boardform/ 035] ~ 0502 " o.sofo 0.310 0.318 0.2.44 0.181 0.110 f 0-163 0-U3 0-HI Q'03 am o.ifei onfe o-ioo o.ni 0-143 am o too 0.111 0-ttfc 0-080 0-080 ffaq>d Insulation(Boardform) OlTi 0.148 ' 0.113 0.078 0.088 0.084 0.011 0-044 0.044 0.044 0055 0052. 0.042 0.054- 0-055 0-047 10044 The values cifUindhisTable are based on-the fallowing Internal Conductivities or Conductance which are oppressed in fc.t.a per Wr. per So. ft. per l*f HollowClay Tile(4*) &rick. Hollow GypsumTile. 0.93 per4* 5.00 per f 0.4b per 4 flam Walls ' (Mo Plaster) Walls Plastered Walls Plastered | one side both sides 'i Gypsum, plaster Gypsum Plaster * lWo. Wall Construction 4" Hollow Clay Tile 4* Brick. 0.390 0.437 am 0.360 0.400 0..25S 0.333 0.367 G. 244 The thickness of the gypsum fill is approximately in., the approximate 4 in. dimension of 2 in. by 4 in. studding. bMetal lath and plaster assumed % in. thick, cplaster assumed m. thick. . 0.59 is for 18 lb. weight--weights as low as 12 lb. may be used. <TThe coefficient used for cellular gypsum. 0 51 A