Document pd3LgRVdnj178pE4d0Dnd3Ja

American Society of Heating and Ventilating Engineers Guide, 1931 Table 14. 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. fahr. DIFFERENCE IN TEMPERATURE BETWEEN THE AIR ON-THE TWO SIDES AND ARB BASED ON AN OUTSIDE WIND EXPOSURE OF 15 MILES PER HOUR. Thevalues of Uinthis Table are basedonthe following Internal Conductivities or Conductances which are expressed in B.tu.per Hr. per Sq.F*t. perl* F Stone Brick. Cement Mortar Plasterboard. 10:00perP 5.00perl* 8.00 per P 3.73 per.|" Raster (Gypsum) Wood Lath 4 Piaster Cork board Ciqid Insulation (Boardform) 2.37 per r 2.00as applied 0-30 per P 0.33 per P " Cellular Gypsum (IS*) Flaked Gypsum, Dry (24*) 0.59 per P 0.48 per l" Y=Tbtckness of Insulation where specified Interior Construction Y Number 1 Plain Walls - Wo Interior Finish ' A fI' * /' 4 Cement Mortar---' Thickness of brick -- X 8" 12" AB 16" c 0.326 0.254 . 0,215 Z j Plaster on Brick. 0.306 0.246 0.205 3 5 Piasteron Metal Lath - Furred. O.Z33 . 0.146 0.170 4 Plasteron Wood Lath - Furred 0.224 0.140 0.165 5 5; PIaster on ^ Plasterboard-Furred 0.225 a i Plasteron Wood Lath on 2.'furringStrips <o -Cellular Gypsum Fill b ir l8 a 7 -5; Plasteron V/sod Lath on 2'Fumnq Strips -- Flaked Gypsum Fill ' ir 18 0.158 0.143 8 \ Plaster on R-iqid Insulation -- (Boardform) Furred 4 lrt z 0.175 r 0.139 10 Plasteron Cork board set in-L ll Cement Mortar if 0.120 i 0.100 0.140 0.165 0.141 0.126 0.128 0.117 0.154 0.137 0.125 0.113 0. no o'100 0.043 ` 0.086 aBased on 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. 60 Chapter 3--Heat Losses by Transmission Table 15. 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 dec. fahr. .vfksknce in temperature between the air on the two sides and are based on an outside wind EXPOSURE of is miles per hour. Thevaluesdf UinthisTabbare based onthefollowiinq Internal Conductivities orConductances which aie exuressed in B-t.u. per Mr. per Sq. Ft. per l F UoUmvTile 6"-0.54 S'-043 I0%,a4fc 12- 0 33 Stone Cement Mortar Plasterboard piaster (Gypsum) WbadLath 4 plaster 10.00 per 1 .8.00 per f 3.73 peri 1.52 per P 1.00atesadpp Corkboard ^30 perl Giaid Insulation (boardform) 0.33 perl Cellular Gypsum (18**) FlakedGypsum, Diry (24 ) per|. 0.48 per 1 D>> Y= Thickness of Insulationwhere specified L K Interior Ba Construction Z v demerit Meirtar Thickness of Hollow Tile -- X C Y 6` A 8" 10' IZ' BcD i Plain Walls - Wo.lnterior Finish Q302` 0.286 0.276 0.Z23 z Tf Plaster on Hollow Tile 3 ^"Plasteron Metal Lath-Furred 4 5 PI aster on Wood Lath-Furred 0.283 0.270 0.260 0.2130.220 0.211 0.206 0.175 . 0.212 0.204 0.144 Q170' 5 Plaster on ^ Plaster board-- Purred 5 Plasteron Wood Lathoh 2* Furrinq 6 _ Stnps --Cellular Gypsum Pill b 2 Plasteron Wood Lath on Z" Furrinq 7 Strips--Flaked Gypsum Fill . 0.212 a |JSL" '8 0.152 a 15." `8 0.138 0.204 0.144 0.170 0.148 0.145 0.124 0.135 0.132 0.114 8 | i Plasteron Uiqid Insulation -- (Boardform) Furred 4 l" z QI68 i* 0.134 0.163 0.131 0.154 0140 0.128 0.U5 10 f Plasteron Corlcboard set in 4 Cement Mortar II if. QII6 0.114 0.112 0.102 0.047 0.046 0.045 0.088 Based on 1$4 in., the actual thickness of 2 in. tuning strips.. bThe coefficient used for cellular gypsum, 0.59 is for 18 lb. weight--weights as low as 12 lb. may be usedI^he 5 in., 8 in. and 10 in; tile figures are based'on two cells in the direction of heat flow. The 12 in. Ule is based on three cells in the direction of heat flow.