Design & SizingCâu 24 / 110
A water main runs 250 ft of developed length and the friction chart shows a loss of 6 psi per 100 ft at the design flow. How much pressure is lost to friction over the full run?
a.6 psi
b.9 psi
c.25 psi
d.15 psi
Giải thích
Friction loss = (loss per 100 ft) x (length / 100) = 6 x (250 / 100) = 6 x 2.5 = 15 psi. Friction loss scales directly with developed length, so long runs consume a large share of the pressure budget. This 15 psi must be subtracted from supply along with elevation before checking residual.
Trích dẫn luật: UPC §610.0Luyện miễn phí toàn bộ 110 câu hỏi — không cần đăng ký.
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