Core TradesCâu 189 / 700
A 4-inch horizontal building drain runs 48 feet at a minimum slope of 1/8 inch per foot. What is the total fall over that run?
a.4 inches
b.6 inches
c.8 inches
d.12 inches
Giải thích
48 feet x 1/8 inch per foot = 6 inches of total fall. The 4-inch answer uses too little run, 8 inches assumes a steeper 1/6 slope, and 12 inches assumes 1/4 inch per foot rather than the stated 1/8.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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