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PROJECT : PAGE : <br />CLIENT : DESIGN BY : <br />JOB NO. : DATE : REVIEW BY : <br />INPUT DATA <br />Exposure category (B, C or D) <br />Importance factor, pg 77, (0.87, 1.0 or 1.15)I =Category II <br />Basic wind speed (IBC Tab 1609.3.1V3S)V =mph <br />Topographic factor (Sec.6.5.7.2, pg 26 & 45)Kzt =Flat <br />Building height to eave he =ft <br />Building height to ridge hr =ft <br />Building length L =ft <br />Building width B =ft <br />Effective area of components A =11 ft2 <br />DESIGN SUMMARY <br />Max horizontal force normal to building length, L, face =21.49 kips <br />Max horizontal force normal to building length, B, face =23.33 kips <br />Max total horizontal torsional load =188.16 ft-kips <br />Max total upward force =70.99 kips <br />ANALYSIS <br />Velocity pressure <br />qh = 0.00256 Kh Kzt Kd V2 I =psf <br />where:qh = velocity pressure at mean roof height, h. (Eq. 6-15, page 27) <br />Kh = velocity pressure exposure coefficient evaluated at height, h, (Tab. 6-3, Case 1,pg 79)=0.91 <br />Kd = wind directionality factor. (Tab. 6-4, for building, page 80)=0.85 <br />h = mean roof height =21.50 ft <br />< 60 ft, [Satisfactory] <br />< Min (L, B), [Satisfactory] <br />Design pressures for MWFRS <br />p = qh [(G Cpf )-(G Cpi )] <br />where:p = pressure in appropriate zone. (Eq. 6-18, page 28).pmin =10 psf (Sec. 6.1.4.1 & 6.1.4.2) <br />G Cp f = product of gust effect factor and external pressure coefficient, see table below. (Fig. 6-10, page 53 & 54) <br />G Cp i = product of gust effect factor and internal pressure coefficient.(Fig. 6-5, Enclosed Building, page 47) <br /> =0.18 or -0.18 <br />a = width of edge strips, Fig 6-10, note 9, page 54, MAX[ MIN(0.1B, 0.4h), 0.04B,3] =6.00 ft <br />Net Pressures (psf), Basic Load Cases Net Pressures (psf), Torsional Load Cases <br />13.13 0.00 13.13 <br />(+GCp i )(-GCp i )(+GCp i )(-GCp i )(+GCp i )(-GCp i ) <br />1 0.47 6.98 15.62 0.40 5.28 13.93 1T 0.47 1.74 3.91 <br />2 -0.69 -20.89 -12.25 -0.69 -20.89 -12.25 2T -0.69 -5.22 -3.06 <br />3 -0.43 -14.64 -5.99 -0.37 -13.21 -4.56 3T -0.43 -3.66 -1.50 <br />4 -0.37 -13.11 -4.46 -0.29 -11.29 -2.64 4T -0.37 -3.28 -1.12 <br />1E 0.71 12.80 21.44 0.61 10.33 18.97 0.00 <br />2E -1.07 -30.02 -21.37 -1.07 -30.02 -21.37 <br />3E -0.62 -19.13 -10.49 -0.53 -17.05 -8.40 (+GCp i )(-GCp i ) <br />4E -0.54 -17.38 -8.74 -0.43 -14.65 -6.00 1T 0.40 1.32 3.48 <br />5 -0.45 -15.13 -6.48 -0.45 -15.13 -6.48 2T -0.69 -5.22 -3.06 <br />6 -0.45 -15.13 -6.48 -0.45 -15.13 -6.48 3T -0.37 -3.30 -1.14 <br />4T -0.29 -2.82 -0.66 <br />Net Pressure withG Cp f <br />Roof angle q = <br />G Cp f <br />Net Pressure with <br />Roof angle q = <br />G Cp f <br />Net Pressure with <br />Surface <br />Roof angle q = <br />G Cp f <br />Net Pressure withSurface <br />Roof angle q = <br />Surface <br />Wind Analysis for Low-rise Building, Based on ASCE 7-16 / IBC 2021 / CBC 2022 <br />C <br />1.00 <br />110 <br />1 <br />18 <br />22.38 <br />Page 2 of 9 <br />25 <br />60 <br />40