Plumbing Codes and Regulations 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 Regulations flashcards as text
Under the UPC, what is the minimum trap seal depth required for fixture traps?
Answer: 2 inches
The UPC requires a minimum trap seal depth of 2 inches to prevent sewer gases from entering the building.
According to the IPC, what is the maximum developed length for a fixture drain from the trap weir to the vent connection?
Answer: 8 feet
The IPC allows a maximum developed length of 8 feet from the trap weir to the vent for most fixtures.
Which code body publishes the Uniform Plumbing Code (UPC)?
Answer: IAPMO
The International Association of Plumbing and Mechanical Officials (IAPMO) publishes and maintains the UPC.
Under the IPC, a 3-inch horizontal drain serving a water closet must have a minimum slope of:
Answer: 1/4 inch per foot
The IPC requires 3-inch and larger horizontal drains to slope at a minimum of 1/4 inch per foot toward the outlet.
Which of the following materials is NOT permitted for gas supply piping under most model plumbing codes?
Answer: PVC
PVC is not approved for gas supply piping because it is combustible and cannot withstand gas pressure and heat requirements.
The IPC requires cleanouts to be installed at the base of each stack and at intervals not exceeding:
Answer: 100 feet
The IPC requires cleanouts at the base of each stack and at maximum 100-foot horizontal intervals.
Under model plumbing codes, what is the required minimum hot water temperature at the source to prevent Legionella growth?
Answer: 140°F
Plumbing codes and ASHRAE 188 recommend storing domestic hot water at 140°F to inhibit Legionella bacteria growth.