Plumbing Codes and Standards Flashcards
7 cards from real Master Plumber Exam practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Plumbing Codes and Standards flashcards as text
Under the IPC, a fixture with a flood rim located below the adjacent roof must be protected against backflow by which device?
Answer: Air gap
An air gap is the only backflow protection method acceptable when the flood rim is below the roof or other overflow point presenting a high hazard.
Per the IPC, what is the required minimum air gap distance for a kitchen sink faucet with a 1/2-inch supply pipe?
Answer: 1-1/2 inches
The IPC requires an air gap of at least 1-1/2 times the effective opening diameter, with a minimum of 1 inch, but the standard minimum for most fixtures is 1 inch for supply openings up to 1/2 inch.
Under the IPC, which of the following fixtures requires a floor drain to be installed within a specific proximity under certain occupancy conditions?
Answer: Water heater relief valve discharge
The IPC requires the T&P relief valve discharge to terminate to the outside, a safe pan, or within 6 inches of the floor or to a floor drain.
According to the IPC, the developed length of a trap arm for a 1-1/2 inch trap shall not exceed:
Answer: 5 feet
Per IPC Table 909.1, a 1-1/2 inch diameter trap arm has a maximum developed length of 5 feet to the vent.
Per the IPC, which of the following is NOT a recognized method of venting a plumbing system?
Answer: Cross venting
Cross venting is not a recognized venting method under the IPC; approved methods include individual, common, wet, circuit, and combination drain and vent.
Under the IPC, a wet vent serving a bathroom group must be sized based on the:
Answer: Total drainage fixture units of the wet-vented fixtures only
A wet vent must be sized to accommodate the drainage fixture unit load of all fixtures it serves, per IPC Section 912.
Per the IPC, what is the minimum distance a vent terminal must be located from a window that can be opened?
Answer: 3 feet
The IPC requires vent terminals to be located at least 3 feet from any door, window, or air intake opening to prevent sewer gases from entering the building.