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INPUT DATA
<br />Exposure category (B, C or D)C
<br />Importance factor I = 1,00 Category II
<br />Basic wind speed V = 110 mph
<br />Topographic factor Kzt =1 Flat
<br />Building height to eave he =8,00 ft
<br />Building height to ridge hr =13,50 ft
<br />Building length L = 48,83 ft
<br />Building width B = 29,75 ft
<br />Effective area of components A = 10,00 ft2
<br />.
<br />Max horizontal force normal to building length, L, face =7,66 kips X 0.6=4,60 kips (ASD)
<br />Max horizontal force normal to building length, B, face = 5,37 kips X 0.6=3,22 kips (ASD)
<br />Max total horizontal torsional load = 46 ft-kips
<br />Max total upward force = 25,57 kips
<br />Velocity pressure
<br />qh = 0.00256 Kh Kzt Kd V2 I =22,38 psf
<br />where: qh = velocity pressure at mean roof height, h.
<br />Kh = velocity pressure exposure coefficient evaluated at height, h,= 0,85
<br />Kd = wind directionality factor =0,85
<br />h = mean roof height =10,75 ft
<br />< 60 ft, [Satisfactory]
<br />Design pressures for MWFRS
<br />p = qh [(G Cpf )-(G Cpi )]
<br />where: p = pressure in appropriate zone
<br />G Cp f = product of gust effect factor and external pressure coefficient
<br />G Cp i = product of gust effect factor and internal pressure coefficient
<br /> =0,18 or -0,18
<br />a = width of edge strips, MAX[ MIN(0.1B, 0.4h), 0.04B,3] =3,00 ft
<br />20,29 0,00 20,29
<br />(+GCp i )(-GCp i )(+GCp i )(-GCp i )(+GCp i )(-GCp i )
<br />1 0,53 7,85 15,91 0,40 4,92 12,98 1T 0,53 1,96 3,98
<br />2 -0,66 -18,88 -10,83 -0,69 -19,47 -11,41 2T -0,66 -4,72 -2,71
<br />3 -0,48 -14,74 -6,68 -0,37 -12,31 -4,25 3T -0,48 -3,68 -1,67
<br />4 -0,43 -13,61 -5,56 -0,29 -10,52 -2,46 4T -0,43 -3,40 -1,39
<br />1E 0,80 13,80 21,86 0,61 9,62 17,68 0,00
<br />2E -1,03 -27,10 -19,04 -1,07 -27,98 -19,92
<br />3E -0,69 -19,37 -11,31 -0,53 -15,89 -7,83 (+GCp i )(-GCp i )
<br />4E -0,64 -18,25 -10,19 -0,43 -13,65 -5,60 1T 0,40 1,23 3,25
<br />5 -0,45 -14,10 -6,04 -0,45 -14,10 -6,04 2T -0,69 -4,87 -2,85
<br />6 -0,45 -14,10 -6,04 -0,45 -14,10 -6,04 3T -0,37 -3,08 -1,06
<br />4T -0,29 -2,63 -0,62
<br />Area Area
<br />(ft2)(+GCp i )(-GCp i )(ft2)(+GCp i )(-GCp i )
<br />1 343 2,69 5,45 1 265 1,31 3,44
<br />2 679 -12,83 -7,35 2 618 -12,04 -7,06
<br />3 679 -10,01 -4,54 3 618 -7,61 -2,63
<br />4 343 -4,66 -1,90 4 265 -2,79 -0,65
<br />1E 48 0,66 1,05 1E 55 0,53 0,97
<br />2E 95 -2,58 -1,81 2E 156 -4,37 -3,11
<br />3E 95 -1,84 -1,08 3E 156 -2,48 -1,22
<br />4E 48 -0,88 -0,49 4E 55 -0,75 -0,31
<br />Horiz. 7,66 7,66 Horiz. 5,37 5,37
<br />Vert. -25,57 -13,86 Vert. -24,86 -13,15
<br />10 psf min.Horiz. 6,59 6,59 10 psf min.Horiz. 3,20 3,20
<br />Sec. 6.1.4.1 Vert. -14,53 -14,53 Sec. 6.1.4.1 Vert. -14,53 -14,53
<br />Net Pressure withSurface
<br />Roof angle q =
<br />G Cp f
<br />Pressure (k) with
<br />WIND ANALYSIS FOR LOW-RISE BUILDING, BASED ON ASCE 7-22 / IBC 2024 / CBC 2025
<br />S
<br />SurfacePressure (k) with
<br />S
<br />Surface
<br />Roof angle q =
<br />G Cp f
<br />Net Pressure with Surface
<br />Roof angle q =
<br />G Cp f
<br />DESIGN SUMMARY
<br />ANALYSIS
<br />Basic Load Cases in Transverse
<br />Direction
<br />Net Pressures (psf), Torsional Load
<br />Cases
<br />Basic Load Cases in Longitudinal
<br />Direction
<br />Net Pressures (psf), Basic Load Cases
<br />Net Pressure withSurface
<br />Roof angle q =
<br />Net Pressure withG Cp f
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