Thoát nước, Nước thải & Thông hơiCâu 103 / 360
The required size of a vent pipe:
a.May be reduced by half above the roof
b.May be reduced one size above the highest fixture
c.Shall not be reduced along its length
d.May be reduced below the flood-level rim
Giải thích
A vent must not be decreased in size along its required length; reducing it would restrict airflow and could cause frost or debris closure. It may be increased but not reduced. Reducing it above the roof, above the top fixture, or below the flood rim all violate this rule.
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
- The DFU value of a residential kitchen sink is:
- What is the minimum vent size for a 3 inch drain, using the half-diameter rule?
- Using the half-diameter rule, the minimum vent size for a 4 inch drain is:
- In areas subject to frost closure, a vent extension through the roof must be increased to a minimum of 3 inches, and the change in size must be made at least:
- The horizontal drainage pipe between a fixture trap and its vent is called the:
- A 5 inch building sewer sloped at 1/4 inch per foot is permitted a maximum load of how many DFU?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với California CSLB C-36 Plumbing Trade Examination · Quy trình kiểm tra