Thoát nước, Nước thải & Thông hơiCâu 113 / 360
A common vent may serve how many fixtures connected at the same level?
a.2
b.3
c.4
d.8
Giải thích
A common vent serves two fixtures that connect to the drainage system at the same level through a single vent. Three or four fixtures exceed the common-vent limit and need another venting method, and eight is the maximum for a circuit vent, not a common vent.
Trích dẫn luật: 2022 California Plumbing Code (CPC) §905.6Luyện miễn phí toàn bộ 360 câu hỏi — không cần đăng ký.
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