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\X <br />1 <br />Existing Residence <br />a <br />P/2 <br />Panel Span (P) <br />¥ <br />A <br />Pil <br />7 =,'6'0/V- Header <br />Figure 1 <br />Patio Cover Length (L) <br />Determine Snow Loads on Existing Structure <br />1 Determine Raof Snow/Live Load, S. See General Note 14. <br />2 Dead Load = 1 psf <br />3 Add Dead and Live/Snow Loads, muIitply by half of Panel Span <br />Wall Load = (D + S) P /2 <br />4 Result is wall load in pounds per Hnear foot. <br />Determine Wind Loads on Existing Structure <br />1 Determine Wind Load, W+ or W-. See Table 1 <br />2 Dead Load included in Down and Up loads <br />3 Mulitply W+ or W- by half of Panel Span <br />Wall Load =WP/2 <br />4 Result is wall load in pounds per linear foot. <br />5 Maximum Shear Load in X direction is 536 ibf (130 mph Exposure C, 11' Panel Span) <br />Max load in Y direction (towards house) is 75 pif (130 mph Exp C, 10" I beam) <br />Max load in Y direction due to force couple resisting lateral is 146 pif <br />(130 mph Exp C, Projection = Width} <br />Determine Seismic Loads on Existing Structure (Excludes Roof Snow Load over 30 psf) <br />1 Vertical Loads and Horizontal Loads = maximum of 1 psf <br />Combination Loads based on Equation 16-13 <br />1 Determine Combination Load, C. See Table 2 <br />3 Mulitply C by half of Panel Span <br />Wail Load =CP/2 <br />4 Result is wall load in pounds per linear foot. <br />ICC Ea 1953 (2009 [BC) 12/5/2011 <br />LS US 8Kz 0.7 0.98 height factor, Exposure B and C <br />Kzt 1 Topographic factor . <br />Kd 0.85 Wind Directionality factor <br />I , 1 Importance Factor <br />G 0.85 Gust Factor BUILDING PRODUCTS <br />2440 AlbrightCnet1.2 Net Pressure Coefficent <br />Dead 1 psT Houston, TX 77017 <br />[ -Design Design (713) 946-9000 <br />Down Load Up Load <br />Wind C&C (pst)(psf)Carl Putnam, P. E. <br />Speed (mph) Exposure qh (psf)(psf)W+VIA 3441 Ivylink Place <br />85 B 11.0 11.2 12.2 10.6 Lynchburg, VA 24503 <br />90 B 12.3 12.6 13.6 12.0 (434) 384-2514 <br />100 B 15.2 15.5 16.5 14.9 carlputnam@comcast.net <br />105 B 16.8 17.1 18.1 16.5 <br />110 B 18.4 18.8 19.8 18.2 <br />120 B 21.9 22.4 23.4 2f.8 <br />130 8 25.7 26.3 27.3 25.7 <br />85 C 15.4 15.7 16.7 15.1 <br />90 C 17.3 17.6 18.6 17.0 <br />100 C 21.3 21.8 22.8 21.2 <br />105 C 23.5 24.0 25.0 23.4 <br />110 C 25.8 26.3 27.3 25.7 <br />120 C 30.7 31.3 32.3 30.7 TABLE 1 DEC 5 2011 <br />130 C 36.0 36.8 37.8 36.2 <br />Maximum Loads:Live, Snow, Wind or Combination (75°4Snow + 75%Wind +Dead Loads) <br />Wind <br />Wind Load Live Loads (psf)Ground Snow Loads (psf) <br />Speed (mph) Exposure (psf) 10 20 25 30 40 60 <br />Roof Live/Snow + Dead Loads 11.0 21.0 22 26.2 34.6 51.4 <br />85 8 11.2 j 16.9 24.4 25.2 28.3 34.6 47.2 <br />90 B 12.6 '17.9 25.4 26.2 29.3 35.6 48.2 < h\\ < <br />100 B 15.5 20.2 27.7 28.4 31.6 37.9 50.5 <br />105 B 17.1 21.3 28.8 29.6 32.7 39.0 51.6 <br />110 B 18.8 22.6 30.1 30.8 34.0 40.3 52.9 <br />120 B 22.4 25.3 32.8 33.5 36.7 43.0 55.6 <br />130 B 26.3 28.2 35.7 36.4 39.6 45.9 58.5 <br />85 C 15.7 20.3 27.8 28.5 31.7 38.0 50.6 <br />90 C 17.6 21.7 29.2 30.0 33.1 39.4 52.0 <br />100 C 21.8 24.8 32.3 33.1 36.2 42.5 55.1 <br />105 C 24.0 26.5 34.0 34.7 37.9 44.2 56.8 <br />110 C 26.3 28.2 35.7 36.5 39.6 45.9 58.5 TABLE 2 M6-2009 <br />120 C 31.3 32.3 39.5 40.2 43.4 49.7 62.3 <br />130 C 36.8 37.8 43.6 44.3 47.5 53.8 66.4 <br />Page 99 of 101 <br />mlilli <br />OFCAL€>'' <br />9?0.. 4 <br />e., PU 724 <br />C6.39 <br />.6 15 <br />JUN 1 013 <br />* LICEN <br />Y <br />741