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A roof system in Hilo experiences 180 mph wind speeds. The roof area is 1,800 sq ft with a shape factor of 1.3. If the base uplift pressure is 50 psf, what is the total design uplift force?

Correct Answer

B) 117,000 lbs

Total uplift = Area × Base pressure × Shape factor = 1,800 × 50 × 1.3 = 117,000 lbs total design uplift force.

Answer Options
A
135,000 lbs
B
117,000 lbs
C
125,000 lbs
D
145,000 lbs

Why This Is the Correct Answer

Total uplift = Area × Base pressure × Shape factor = 1,800 × 50 × 1.3 = 117,000 lbs total design uplift force.

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