Document kDOKJNM38Bz0kvGQ9Laz8ex4D

104 CHAPTER 9 1959 Guide Table 6 .... Coefficients of Transmission (U) of Solid Masonry Walls* CMlGdcnti or* srpranwl in Bin pnr (Boar) (iqnam foal) (FdluaafiaH deem difference in leeiperninre between the nir on tfie ten ddei), and are band nn a* niMde mi>d vafceity cf ! 5 sspfc Example--Waff G 2 Exompfa of Substitution ^'^CPtfn 1 1/I/ll 1 *34S' Resistances used are given below in this Resistances used are given below in tabic or in Table 3 or 4 this table or in Table 3 or 4 Construction Resistance (fi) Assume plain wall--00 furring or plaster. 1. Outside surface (15 mph wind)........................... 0.17 Total resistance.......................................................... 547 2. Face brick (4 in.)...................................... D0e.d44uct 4. Airspace....................................... 0.97 3. Common brick (4 in.)............................................. 0.80 5. Gypsum lath 04 in.)................0.33 4- Airspace11.................................................................... 0.97 6. Plas. (sand agg.) 04 in).......... 0.09 1.38 5- Gypsum lath 04 in.). ...................................... 0.33 6. Pfas. (sand agg.) 0i'm.)......................................... 0.09 Total resistance.......................................................... 3.09 7. Inside surface (stiff air)......................................... 0.68 U ~ 1/fi - 1/3.09 _................................................ 0.48 Total resistance...................................................... 3.47 V - 1/fi - 1/547 -.................................... ... 0.29 See value 0.29 in boldface type in table below. To Adjust U Vatuttx for ConstnKtioa with Added Insulation between Furring Strip*, See Table 16 Interior Raid! . Ejtferior Construction' None ftesutonce Material U .A Brick (face and common)*5 (6 in-.) (8 in.) . (12 in.) (16 in.) Brick (common only) (8 in.) . (12 in.). . (16 in.) . Stone (lime and sand) (8 in.) (12 in.) (16 in.) (24) in. Hollow clay tile (8 in.) (10 in.) (12 in.) 0.61 1.34 3.04 3.84 0.68 0.48 0.35 0.27 1.60 8.40 3.80 0.41 0.31 0.25 0.64 0.96 1.38 1.98 0.67 0.55 0.47 0.36 1.85 0.36 8.88 0.33 8.60 0.30 Flo*. % In. oo WaU Metal Loth end in. PIa*, on Fviring (Sand 090.) 0J? {Lt wt. aggj 0.39 (Sand age-1 0J3 (U. wt. agg.) 0.47 uUU U BCO E 0.64 0.45 0.33 0.26 0.54 0.41 0.30 0.25 0.39 0.31 0.25 0.21* 0.34 0.28 0.23 0.19 0.39 0.30 0.24 0.35 0.27 0.23 0.28 0.23 0.19 0-26 0-21 0.18 0.63 0.52 0.45 0.35 0.53 0.45 0.40 0.32 0.39 0.34 0.31 0.26 0.34 031 028 0.24 0.36 0.31 0.29 0.32 0.29 0.27 0.26 0.24 0.22 0-24 0-22 0.21 Gypsutn Lath 04 bv) and }4 fo lia*. on Furring hsoL Bd. Lclh (M hvl and H Ptav on Furring Wood Lath anc H in. Has. No pku. 0.32 (Sand aggj 0.41 (Lt. wt agg-1 0j54 No plat 1.43 (Sand agg.) 1.52 Number ISand aggj 0.40 U FGH 1 JK 0.36 0.30 0.24 0.20 0.35 0.89 0.23 0.20 0.33 0.27 0.22 0.19 0.26 0.22 0.19 0.16 0.25 0.22 0.19 0.16 0.35 0.29 0.23 0.20 0.27 0.22 0.19 0.26 0.22 0.18 0.25 0.21 0.18 0.21 0.18 0.16 0.20 0.17 6.15 0.26 0.22 0.18 0.36 0.32 0.29 0.25 0.35 0.31 0.28 0.24 0.32 0.29 0.27 0.23 0.26 0.24 0.22 0.19 0.25 0.23 0.22 0.19 0.35 0.31 0.29 0.24 0.25 0.23 0.22 0.25 0.22 0.21 0.23 . 0.20 0.21 0.18 0.20 0.17 0.19 0.18 0.17 0.25 0.23 0.21. 2 4 6 6 7 9 10 11 18 13 14 Poured concrete 30 lb per cut ft ' (4 m.) (6 in.) . (8 in.) (10 in.) 80 lb per cut ft (6i). (8 in.)' (10 in.) (12 in.) 140 lb per cut ft (6 in.) (Sin. (10 in.) (12.in.) 4M 6.66 8.88 11.10 0.19 0.13 0.10 0.08 0.19 0.13 0.10 ' 0.08 0.18 0.13 0.10 0.08 0.16 0.12 0.09 0.08 0.15 Oil 0-09 0.07 0.15 0.11 0.09 0.08 0.15 0.11 0.09 0.08 0.14 0.11 0.09 0.07 6.13 0.10 0.06 0.07- 0.13 0.10 0.08 0.07 0.15. 0.11 0.09 0.08 . 15 . 16 17 18 8.40 3.80 4.00 4.80 0.31 0:25 0.21 0.18 0:30 0.24 0.20 0.17 0.27 0.23 0.19 0.17 6.23 0.19 0.17 0.15 0.21 0.18 0.16 0.14 0.22 0.19 0.16 0.14 0.22 0:18 0.16 0.14 0.21 0.18 0.15 0-14 0.18 0.16 0.14 0.12 0.17 0.15 . 0.14 0.12 0.22 0:18 0.16 0.14- 19 20 21 22 0.48 0.64 0.80 0.96 0.75 0.67 0.61 0.55 0.69 0.63 0.57 0.52 0.58 0.53 0.49 0.45 0.41 0.39 0.36 0.34 0.36 0.34 0.32 0.31 0.38 0.36 0.34 0.32 0.37 0.35 0.33 0.31 0.34 0.32 0-31 0-29 0.27 0.26 0.25 0.24 0.26 0.2S 0.24 0.23 0.37 0.35 0.33 0.31 . 23 24 25 26 Heat Transmission Coefficients of Building Materials Table 6----- Coefficients of Transmission (U) of Solid Masonry Walls (Concluded) 105 Exterior Construction* None Material Concrete block (gravel agg.) (8 in.) (Cinder see.) (8 in.) (Lt. wt. agg.) (8 m.) Resistance |--* U A 1.11 0.52 1.78 0.39 1.89 0.36 8.00 0.35 Flat. 5^ in. on Waff Metal Lath and "44 M. Fla*, on Furring Gypsum Lath 04 *") and 14 in. Fla*, on Furring Inwt. 8d. lath Wood 04 in-) and )4 h- Loth ond Hoi. on Furring Plat. (Sand agg.) OJJ (Lt wt. ogg.) 0.39 (Sand ogg.) 0J3 (It. wt. agg.) 0.47 No pla*. 0.32 UUU UU B CDE F (Sand agg.) 0.41 (U. wt. ogg.) 0.44 No pla*. 1.43 U U It GH I (Sand ogg.) 1.52 (Sand agg.) 0.40 UU JK 0.48 0.45 0.37 0.35 0.34 0.31 0.43 0.40 0.34 0.32 0.31 0.28 0.33 0.31 027 0-26 0.28 024 0.29 0.28 0.25 0.24 0.23 0.22 0.31 0.29 0.28 0.25 0.24 0.23 0.30 0.28 0.25 0.24 0.24 0.22 0.28 0.27 0.23 0.22 0.21 0.22 0.19 0.18 0.22 0.19 0.18 0.29 0.24 0.22 To adjust U value* far the effect of added ia*ultioo between framing member*, eee Table Id. dIi^f*? f^trUCMlral "*PPlied tti"ext*rior'theadditioaa! re*ita,ioe value of 0.10 would hare a oegligiblo effect oo the U ealoe Bock, in. (5M in. actual) is assumed to have no backing. Wall* 8.12 and 16 io. have t in. of face brick and balance of common brick. tontally, there will be 0.00034 X % - 0.00045 sq ft of tie rod to each square foot of wall area. Thea from plane B to plane C the conductance Ct is .' ,, 0.00045 400 0.99955 12 c`"-i5-xn + -urxr5 - 0.180 + 11.994 - 12.174 2. For tie rod and insulation from plane C to'plane D the conductance C* is C = 0 00045 v 400 0.99955 0.30 * 1.0 X 2b + 1.0 X 2.5 The hot box test value, from University of Minnesota, for this wall, corrected fora 15mph wind velocity, was U = 0.150 Btu per (hr) (sq ft) (F deg). The error between the calculated and test values would be 0.150 - 0.149 ------ 0150------ X 100 * 0.67 percent. If the effect of the tie rods were omitted from the calcula tions, the overall U value would be 0.103. Although the per centage of area occupied by the tie rods per square foot of wall area is 0.00045/1.0 X 100 = 0.045 percent, the error between the calculated and test values would be = 0.072 + 0.120 - 0.192 3. For tie rod and concrete from plane D to plane B the con ductance C* is _ 0.00045 400 * 1.0 X 1.0 + 1.0 1.0 = 0.180 + 11.994 - 12.174 Series Flaw. After the conductance values have been deter mined, the total resistance and U value can be determined as follows; l . Z% , 1 . 1 1 St 1 ' f,i: + r4,+' ^C+, c, + c, + +/. 3.0 _1 Rr 1.655 * 12.0 + 12.174 + 0.192 1 + M + _L' 12.174 12.0 &0 Rr = 0.606 + 0.250 + 0.0822 + 5.208 + 0.0822 + 0.250 + 0.167 = 6.727 11 " Rr " " ?49 Btu per (hr) (sq ft) (F deg). ------ -------- X 100 = 31 percent. Values Used in Calculation of U Value Tables Tables 5 through 15 are based on values given in Table 4. The following conditions have been used: Equilibrium or steady-state heat transfer, eliminating effects of heat capacity. Surrounding surfaces at ambient air temperatures. Exterior wind velocity of 15 mph for winter and 7.5 raph for summer. Surface emissivity'of ordinary building materials = 0.90. Stud space in frame construction not insulated. (See Table 16 for method of correcting for added insulation.) In construction involving air spaces the U values shown are calculated for areas between framing. See Fig. 6 in section Correction for Framing if an allowance is to be merit. for this effect. Air space resistance values used are those shown in Table 4 under Air Spaces. Air spaces are ? in. or more in width. 1 ^j*a^ODS conductivity with mean temperature is neg- Corrections for framing to be made on basis of parallel heat (Continued on p. /at)