Document KRVObYBqD2QNGEX8OLYQVDee2

American Society of Heating and Ventilating Engineers Guide, 1932 Table 10. Coefficients of Transmission (U) of Brick Veneer on Hollow Tile Walls': Note.--These coefficients are expressed in Btu per hour per square foot per 1 dbg pahr DIFFERENCE IN TEMPERATURE BETWEEN THE AIR ON THE TWO SIDES AND ARB BASED ON AN OUTSIDE WIND EXPOSURE OF 15 MU.BS PER HOUR. The values pf 0 m this Table are bosedonthe followinq Internal Conductivities or Conductances which are expressed in per Hr per Sq.ft, per IT Hollow Tile &*-Q.S4 8"-a4<* ioT-Ol4& a*-0.33 Brick. 5.00 perl* Cement Mortar 8.00 perl* Plasterboard Raster (Gypsum) 3.73 perj? 1. IZ per 1* Wood Lath { Plaster Cork.board Riqid Insulation(Boardform) 2.00 asapplied 0.30 perl" 0.33 perl* Cellular Gypsum (18*) flaked Gypsum, Dry (24**) 0- 5<? perl* 0.48 perl* Y-Thickness of Insulation where specified Cement Mortar aL Interior Si 3g Construction z Thickness of UotlowTite -- X Y <s &" lO" 12" A B cD l Ram Walls - Mo Interior Finish 0.210 0.257 0.248 0.205 1 Plaster on Hollow Tile. 3 1' Plaster on Metal Loth - Purred 0.254- 0.243 0.235 0.146 0.202 0.145 0.140 0.163 A j Plaster on Wood Loth - Furred 0.145 0.188 0.1&4 0.154 5 j Plaster on^" Plaster board -Furred 0148 0.18s? 0.185 0.154 a X Plasteron Wood Lath on 2* Furrinq Strips (o - Cellular GVP*um Fill b 'I- 0.144 a Plaster on Wood Lath on 2" Fumnq Strips 1 - Flaked Gypsum Fill >1" 0.131 0.140 0.128 0.137 0413 0.12k 0.114 & ^ Plaster on Riqtd Insulation (Board form) Furred 9 10 X Plaster on Corkboard set in -5; Cement Mortar 11 1" 7. 0.158 0.153 r 0.127 0.124 G lx 0.U2 0. no 2" 0.024 0.042 o.tso 0 122 0.107 0.041 0.133 Q.U0 0.048 0.085, Based on 1% in., the actual thickness of 2 in. furring strips. bThe coefficient used for cellular gypsum, 0.59 is for 18 lb. weight--weights as low as 12 lb. may be used. The 6 in., 8 in. and 10 in. tile figures are based on two cells in the direction of flow of heat. The l in.; tile is based on three cells in the direction of flow of heat. 42 Chapter 3--Heat Transfer Through Materials and Constructions Table 11. Coefficients of Transmission (U) of Brick Veneer on Concrete Walls Note.--These coefficients are expressed in Btu per hour per square foot per 1 deg fahr DIFFERENCE IN TEMPERATURE BETWEEN THE AIR ON THE TWO SIDES AND ARB BASED ON AN OUTSIDE WIND* EXPOSURE OF 15 MILES PER HOUR. The values of U in this Tableare based on the following Internal Conductivities or Conductances which are expressedin B.t.u.per Hr. per Sq.ft, per 1*P Concrete (Stone 1:2:4 mix) Brick. Cement Mortar Plaster board Raster (Gypsum) Wood Lath $ Plaster Corkboard Ciqid Insulation (Boardform) Cellular Gypsum (18*) FlakedGypsum, Dry (24*) 8-50 per l* 5.00 per f 8-00 per T 3-73 per|* 2.32 per 1* 2.00 as applied 0.30 perl* 0 33 perl* o. 5S per f 0-48 per I* YsThickness of Insulation where specified __j SSC3 .4 . 4 'A . S33 SS* 1 Camorvt Mortar MwL 1 Interior Construction z. Thickness of Concrete --X V >" A 8* 10' 12" 16* &c D E 1 Plain Walls - No Interior Finish 0.387 0.355 0.327 0.303 0.264 2 Plasteron Concrete 0,358 0.330 0.305 0.285 0.250 3 ^ Plasteron Metal Lath - Furred 0.263 0.247 0.233 0.221 0.200 4 X Plasteron Wood Lath -- Furred 0.250 0.237 0.224 0.213 0.142 5 X Plaster on |j' Plaster board - Furred O.Z52 0.238 0.225 0.213 QI42 a1 6 X Plaster an Wood Lath on 2*FumnqStnp3 -Cellular Gypsum Fill b i? 0.172 0.165 0.158 0.152 0.142 a 7 X Plaster on Wood Lath on 2 FumnqStnps - Flaked Gypsum Fill *1 0.154 0.144 0.144 0-134 0.130 8. |l* z Plaster on Riqid Insulation -- 9 (Boordform) Furred 10 X Plaster on Cork board set in Cpoient Mortar II iPs O z' 0.142 0.183 0.175 0.168 0.156 r 0.148 0.143 0434 0134 0.126 'tf 0.127 0.123 0.120 0.116 0.110 r 0.162 0.100 0-048 6.043 Based on 1% in.; the actual thickness of 2 in. furring strips. bThe coefficient used for cellular gypsum, 0.59 is for 18 lb. weight--weights as low as 12 lb. may be used. 43