Framing & StructuralCâu 369 / 700
CALCULATION: A roof area of 200 square feet is subject to a net wind uplift pressure of 15 pounds per square foot. What total uplift force must the connections in that area resist?
a.1,500 pounds
b.215 pounds
c.13 pounds
d.3,000 pounds
Giải thích
Total force = pressure x area = 15 psf x 200 sq ft = 3,000 pounds. The connections (straps, ties, anchors) in that area must resist that 3,000-pound uplift. 1,500 pounds halves the area or pressure, 215 pounds adds instead of multiplies, and 13 pounds divides incorrectly.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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