Thoát nước, Nước thải & Thông hơiCâu 140 / 360
The air gap for an indirect waste pipe discharging into a receptor must be at least…
a.1/2 inch
b.equal to the pipe diameter
c.3 inches minimum
d.twice the effective opening (diameter) of the indirect waste pipe, and not less than 1 inch
Giải thích
An indirect waste air gap must be at least twice the effective opening of the drain pipe, measured vertically, and never less than 1 inch. This physical separation prevents sewage from backing up into the equipment through the indirect drain. It is the same principle used for potable-water air gaps.
Trích dẫn luật: 2022 California Plumbing Code (CPC) §801.2Luyện miễn phí toàn bộ 360 câu hỏi — không cần đăng ký.
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