Document b5aZMvQQK7OyrgrE23ZeZbgGD

American Society of Heating and Ventilating Engineers Guide, 1930 Table 17. Coefficients of Transmission (U) of 4-in. Cut Stone Veneer on Brick Walls Note. These coefficients are expressed in B.t.u. per hour per square foot per 1 dec. faur e^SSoTMiIEw!!TMTMbT **** THE AIEON TME TWO SU>ES AND *" BASeo an outside wind Th e values U in this Table are basedon the followmq Ini ernal Conductivities or Conductances which are ex pressed in Bt.u. per Hr. perSq.Ft. perlF Stone 10.00.per 1" Brick Cement Mortar Rasterboard Raster (Gypsum) 5.00 perl* 8.00 per r 3.73 peri" 2.32 per p* Wood Lath 4 Raster Corkboard RiqidInsulation (Boardform) CellularGypsum(18*) Flaked Gypsum, Dry (24*) 2.00 as applied 0.30 perl" 0.33 perl' 0.54perl' 0.48perl' Y- Thickness <# Insulation where specified L _Vo Interior E a Construction Z Y i Ram Walls ~ Wo Interior Finish % ft': 4 Cemen1 . Mortar--* Thickness of E>rick -- X 8" \T AB \<o" c 0.3Z6 0.254 0.ZI5 2 i, Plosteron Brick 0.306 0.246 0.205 3 5 Rasteron Metal Lath - Furred 0.233 0.(46 0.170 4 Rasteron Wood Loth - Furred 0.224 5 j PIaster on |' Plasterboard-Furred 0.225 a 6 z PlasteronWood Lath on Furnna Strips -'Cellular Gypsum Fill b if 0.158 a iHa'steronWxxiLathon 2."Furnnq Strips 7 8 0.143-* Flaked Gypsum Fill IS* * 8 T Plasterer? iqtd Insulation -- (Boardform) Furred 8 1" Z. 0.175 r 0.134 10 z Plasteron Corkboard settn-- . Cement Mortar 11 tf. 0.120 t 0.100 0.140 0.140 0.165 0.165 0.141 0.126 ; 0.128 . 0.117 0.154 0.125 0.137 : 0.113 0.110 0.100 0.043 0.086 Based on in., the actual thickness of 2 ip. furring strips. bThe coefficient used for cellular gypsum. 0.59 is for IS lb. weight--weights as low as 12 lb. may be usseti Chapter 2--Heat Losses from Buildings Table 18. Coefficients of Transmission (U) of 4-in. Cut Stone Veneer on Hollow Tile Walls __these coefficients are expressed in B.t.u. per hour per square foot per 1 deg, fahr- ifference in temperature between the air on the two sides and are based on an outside wind EXPOSURE OF 15 MILES PER HOUR. Thevaluesc U in thtsTable are basedon thefollowinq Internal Conductivities orConductances which are expressed, m B.t.u. per Ur. per Sc;. Ft. per !"F. UollowTile O'-0.54 a"-0.43 Stone Cement Mortar Plasterboard Plaster (Gypsum) VvbodLoth 4Plaster Cartboard Ciqid Insulation (Boardform) Cellular Gypsuoi (lft") RakedGypsum, Dry (24*) io*=0l4<> l2'-0.33 i1n0.r0v0r npoerr. rr 8.00 perl* 3.13 per| 1.32 per* 1.00 osapplied 0.30 perl* 0.33 perl" 054 perl* 0.48 perl' Y- Thicknessaf Insulation where specified Interior Construction Y j Cement Mortar Thickness< UollowTile -- X <o 8" lO' iz D Rain Walls - Mo Interior Finish Q302 0 286 0.276 0223 Plaster on V-loUowTile 7 Plasteron Metal Lath -Furred t Raster on Wood Lath -- Furred 1 Plaster on ^ Plaster board- Furred 0.283 0270 0.260 0213 0-220 0.211 0.206 0175 0.212 0.204 o.m 0.170 0.212 O.Z04 o.m 0.170 5 Rasteron Wood Lath on 2" Furnnq Strips -- Cellular Gypsum Fill 0.152 0.148 0.145 0.I2S 5 Rasteron WoodLathon 2" Furnnq Strips -- Flaked Gypsum Fill 0.138 0.135 0.132 0.1 R 4 Rasteron Uiqid Insulation -- (Boardform) Furred 10 L Raster on Corkboard set m ^ Cement Mortar II a 168 0.134 aii6 0.163 0.131 0.114 0.155 0.140 0.128 0.115 o.iiz 0.102 0.057 0.056 0.085 0.088 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. cThe 6 in.. 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 beat flow. 41