Thoát nước, Nước thải & Thông hơiCâu 125 / 360
Where are air admittance valves (AAVs) prohibited from being installed?
a.In a location where they could be exposed to a supply or return air plenum
b.In an accessible attic space
c.Within a wall cavity that has a ventilation grille
d.Under a lavatory in a vanity cabinet
Giải thích
AAVs must not be installed in a supply or return air plenum, because a valve failure could draw sewer gas into the building's air distribution. They must be located in a ventilated, accessible space and installed above the fixtures they serve. Attics and vanity cabinets are commonly acceptable when accessible.
Trích dẫn luật: 2022 California Plumbing Code (CPC) §918.0Luyện miễn phí toàn bộ 360 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A vent penetrates a roof deck that is also used as a sun deck or walking surface. How high must the vent terminal extend above that roof?
- A vent terminal is located 8 feet horizontally from an openable window. Under the CPC it must either terminate at least 10 feet away or…
- An air admittance valve (AAV) serving an individual fixture must be installed a minimum distance above the horizontal branch drain it serves. What is that minimum?
- What term describes a vent that connects to the drain of a single fixture and extends independently to the outside air or to another vent?
- Two fixtures connected at the same level to a vertical drain and served by a single shared vent are using which venting method?
- A horizontal wet-vent system under the CPC is limited to serving fixtures within…
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