Journeyman Plumber ExamFixtures, Faucets, and Other AppliancesEasy
A plumber is installing a water closet in a newly constructed residential bathroom. The rough-in for the water closet is 12 inches from the finished wall. What is the minimum required distance from the center of the water closet to any side wall or obstruction?
- A21 inches
- B15 inches
- C12 inches
- D18 inches
Show answer & explanationAnswer & explanation
Correct answer: B. 15 inches
According to most plumbing codes, including the International Plumbing Code (IPC), the minimum clearance from the center of a water closet to any side wall or obstruction is 15 inches. This ensures adequate space for use and maintenance.
Why the other options are wrong
- A. 21 inches is excessive and not a standard minimum code requirement for side clearance.
- C. 12 inches is typically the rough-in distance from the wall to the drain, not the side clearance.
- D. 18 inches provides more clearance than required but is not the minimum specified by code.
Water Closet Side Clearance
The minimum distance required by code from the center of a water closet to any adjacent side wall or obstruction.
- Ensures user comfort and accessibility.
- Prevents obstruction of fixture operation.
- Typically measured from the centerline of the fixture.
Memory trick: Clear space around the commode keeps it code-compliant.