Core TradesCâu 74 / 700
CALCULATION: Concrete costs $165 per cubic yard. A footing pour needs 100 cubic feet of concrete plus 8 percent for waste. What is the approximate concrete cost?
a.About $500
b.About $555
c.About $605
d.About $661
Giải thích
100 cubic feet / 27 = 3.70 cubic yards. Add 8 percent waste: 3.70 x 1.08 = 4.00 cubic yards. Cost = 4.00 x $165 = $660, about $661. The lower answers omit the waste factor or miscompute the yardage.
Trích dẫn luật: 2025 CA Building Code, Chapter 19 (Concrete)Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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