Journeyman Plumber ExamFixtures, Faucets, and Other AppliancesMedium
A plumber is installing a shower receptor (base) in a new residential bathroom. What is the minimum interior dimension required for a shower receptor, measured from the finished interior of the shower stall, according to the International Plumbing Code (IPC)?
- A30 inches by 30 inches (762 mm by 762 mm)
- B36 inches by 36 inches (914 mm by 914 mm)
- C32 inches by 32 inches (813 mm by 813 mm)
- D24 inches by 24 inches (610 mm by 610 mm)
Show answer & explanationAnswer & explanation
Correct answer: A. 30 inches by 30 inches (762 mm by 762 mm)
IPC 2021, Section 417.4, states that the minimum interior dimension of a shower compartment shall be 30 inches by 30 inches (762 mm by 762 mm).
Why the other options are wrong
- B. 36x36 inches is a common comfortable size but not the minimum required by code.
- C. 32x32 inches is larger than the minimum but not the exact minimum required by code.
- D. 24x24 inches is too small and does not meet current IPC requirements for a shower receptor.
Shower Receptor Minimum Size (IPC)
The smallest allowable interior dimensions for a shower base or compartment, as defined by the International Plumbing Code (IPC), to ensure user safety and comfort.
- Minimum 30 inches by 30 inches (762 mm by 762 mm).
- Measured from the finished interior surfaces.
- Ensures adequate space for showering.
Memory trick: For a shower's smallest square, 30 by 30, no less, if you dare.