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PROJECT : PAGE :
CLIENT : DESIGN BY :. : : :
INPUT DATAExposure category = 2 Exp. C
Importance category = 2 Hazardous
Basic wind speed V = 100 mph
Building height to eave he = 14 ft
Building height to ridge hr = 28 ft
Building length L = 150 ft
Building width B = 110 ft
DESIGN SUMMARYHorizontal pressure = 43.88 psf ,for roof
= 40.73 psf ,for wall
Upward pressure = 23.63 psf
Total horizontal force on building length = 134.91 kipsTotal
horizontal force on building width = 65.15 kips
Total upward force = 389.83 kips
Overturning moment on building length = 2384.00 ft-kips
Overturning moment on building width = 959.94 ft-kips
ANALYSISImportance factor Iw = 1.15
Mean roof height h = 21.0 ft
Hgt-exp-gust factor Ce = 1.14 ,for roof
1.06 ,for wall
Stagnation pressure qs = 25.7 psf Pressure coefficients Cq =
1.30 horizontal any direction (Method 2, Table 1
= 0.70 upward
Wind Analysis Based on UBC 1997
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ELEMENT & COMPONENT LOADS
Exposure category 2 Exp. C
Basic wind speed V = 100 mph
Building height to eave he = 14 ft
Building height to ridge hr= 28 ft
Building length L = 150 ft
Building width B = 110 ft 150
Width of edge strips (CBC 1622A)
a = MIN(0.1B, 10ft) = 10.00 ft
Importance factor Iw = 1.15
Mean roof height h = 21 ft
Hgt-exp-gust factor Ce = 1.142 ,for roof
Stagnation pressure qs = 25.7 psf
Roof slope 4 :12
Pressure coefficients , for continuity Cq,10 = 1.3 outward ,(CBC
Tab.1
for discontinuity Cq,10
= 2.6 outward
for overhang Cq,10 = 3.1 outward ( 2.3 @ top + 0.8 @ bottom
Cq = Cq,10 - 0.2 + (100-TA) / 450 , (CBC Tab.16A-H, footnote
2)
Cq = Cq,10 - 0.8 + (100-TA) / 112.5 , (only at discontinuities
with slope less than 7:12)
Design wind pressures (CBC 1620A)
P = Ce Cq qs Iw (CBC 20A-1)
Continuity Discontinuity Overhang
outward outward outward
Cq P (psf) Cq P (psf) Cq P (psf)
100 1.10 37 1.80 61 2.30 78
TributaryArea(ft2)
