Systems & CodeQuestion 47 of 110
A key difference between the Uniform Plumbing Code and the International Plumbing Code affects where the building drain becomes the building sewer. Which statement correctly pairs the codes?
a.UPC 30 in, IPC 2 ft outside the wall
b.Both use 5 ft outside the wall
c.UPC 2 ft, IPC 30 in outside the wall
d.Both use the property line
Explanation
The UPC places the building drain to building sewer transition 2 ft outside the building wall, while the IPC uses 30 in. This boundary determines which code chapter, permit, and sometimes trade governs the piping. Knowing which model code the local jurisdiction adopted is essential before sizing or permitting.
Law Reference: IPC vs UPCPractice all 110 questions free — no signup required.
Related questions on this topic
- Medical gas piping must be tested before use. Which test verifies the system is free of leaks and cross connections at operating conditions?
- A water softener regenerates using 8 lb of salt per cubic foot of resin for a 3 cubic foot resin bed. How much salt is consumed per regeneration cycle?
- A water heater is installed in a garage where flammable vapors may be present. What installation requirement addresses ignition of those vapors?
- An indirect waste pipe has an effective outlet opening of 3/4 in. The required air gap above the receptor flood-level rim is two times the effective opening. What is the minimum air gap?
- A sewage ejector serving fixtures below the sewer must discharge upward and then into the gravity building drain. What fitting protects the pump from gravity backflow when it is off?
- A medical gas distribution system has a working pressure of 50 psi. The installation acceptance test is performed at 1.5 times the working pressure. What is the required test pressure?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against Master Plumber Licensing Exam (UPC/IPC-based) · How we review