Thoát nước, Nước thải & Thông hơiCâu 66 / 360
The minimum diameter of a vent pipe must be:
a.Equal to the diameter of the drain it serves
b.Not less than one-half the diameter of the drain served, but never less than 1-1/4 inch
c.Not less than one-third the diameter of the drain served
d.Not less than 2 inches in all cases
Giải thích
The CPC requires a vent to be at least one-half the diameter of the drain it serves and never smaller than 1-1/4 inch. Requiring the vent to equal the drain wastes material, one-third is below the code floor, and a flat 2 inch minimum is not what the code specifies for all vents.
Trích dẫn luật: 2022 California Plumbing Code (CPC) §904.0Luyện miễn phí toàn bộ 360 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Each fixture trap must have a water seal with a depth of not less than and not more than:
- For a 1-1/2 inch trap arm, the maximum developed length from the trap weir to the vent is:
- Cleanouts in horizontal drainage lines must be spaced no more than:
- What is the minimum clearance required in front of a cleanout on a 4 inch drainage pipe?
- A 4 inch building drain sloped at 1/4 inch per foot is permitted a maximum load of how many drainage fixture units (DFU)?
- A 3 inch building sewer sloped at 1/8 inch per foot is limited to a maximum of how many DFU?
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