Core TradesCâu 26 / 700
The drainage fixture unit (DFU) value assigned to a plumbing fixture PRIMARILY represents:
a.A measure of the probable drainage load the fixture contributes to the system
b.The physical trap seal depth of the fixture in inches
c.The minimum working water pressure the fixture needs
d.The number of vents the fixture requires
Giải thích
A DFU is a relative measure of the discharge load a fixture places on the drainage system, used to size pipes. It does not describe trap seal depth, supply pressure, or vent count.
Trích dẫn luật: 2025 CA Plumbing Code (CPC) Chapter 7 (Sanitary Drainage)Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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