Cấp nước & Phân phốiCâu 28 / 360
Which standard covers seamless copper water tube types K, L, and M?
a.ASTM D2846 for CPVC
b.ASTM F1807 for PEX fittings
c.ASTM D1785 for PVC
d.ASTM B88 for copper water tube
Giải thích
ASTM B88 is the standard for seamless copper water tube in types K, L, and M. D2846 covers CPVC, F1807 covers PEX insert fittings, and D1785 covers PVC pressure pipe, none of which apply to copper tube.
Trích dẫn luật: 2022 California Plumbing Code (CPC) §604.1Luyện miễn phí toàn bộ 360 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A residential water heater is 55 feet of developed pipe run from the farthest bathroom. Using standard practice, which change would most directly reduce the long wait for hot water without adding a recirculation pump?
- An air gap and a reduced pressure principle assembly (RP) are both acceptable for high-hazard protection. What is one key advantage of an air gap over an RP assembly?
- Converting demand: a building has an estimated 46 WSFU load served predominantly by flush tanks. Using a typical Hunter-curve conversion, the demand is about 30 gpm. If you must maintain roughly 8 fps maximum velocity, why can you not simply pick the smallest pipe that carries 30 gpm at any velocity?
- On which fixtures does the code most specifically require water hammer arrestors?
- A pressure vacuum breaker (PVB) is selected for a landscape irrigation system. What is the minimum installation height for a PVB relative to the highest downstream head or outlet?
- Two fixtures on a branch each require 4 gpm. If the branch is sized so the combined design demand (with diversity) is about 6 gpm rather than 8 gpm, what principle is being applied?
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