Cấp nước & Phân phốiCâu 17 / 360
When sizing water piping using the fixture unit method, why is the total demand in gpm always less than the simple sum of every fixture's peak flow?
a.Because it is statistically improbable that all fixtures operate simultaneously, so a diversity/demand factor is applied
b.Because fixture units already equal gpm exactly
c.Because the code ignores water closets
d.Because velocity is unlimited
Giải thích
The fixture unit method applies a probability (diversity) factor recognizing that not all fixtures run at once, so estimated demand is less than the arithmetic sum of peak flows. Fixture units are not equal to gpm, water closets are counted, and velocity is limited, making the other options incorrect.
Trích dẫn luật: 2022 California Plumbing Code (CPC) §610.0Luyện miễn phí toàn bộ 360 câu hỏi — không cần đăng ký.
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