Master Plumber Exam Administration, Codes, and Regulations 2 — Questions and Answers
Question 1: Under the IPC, who is authorized to grant a variance from a code requirement when strict compliance would cause undue hardship?
- The licensed master plumber
- The Authority Having Jurisdiction (AHJ) (Correct answer)
- The plumbing inspector only
- The state plumbing board
Correct answer: The Authority Having Jurisdiction (AHJ)
The Authority Having Jurisdiction (AHJ) has the power to grant variances when strict code compliance creates undue hardship.
Question 2: Which document must a plumber typically submit before beginning work on a new commercial plumbing installation?
- Certificate of occupancy
- Permit application with plans (Correct answer)
- Master plumber license copy only
- Letter of intent from the owner
Correct answer: Permit application with plans
A permit application accompanied by construction drawings must be submitted and approved before commercial plumbing work begins.
Question 3: The IPC requires that plumbing systems be inspected and approved before being concealed. Which term describes this required inspection?
- Rough-in inspection (Correct answer)
- Certificate inspection
- Final walkthrough
- Occupancy check
Correct answer: Rough-in inspection
A rough-in inspection verifies that piping is correctly installed before walls and floors are closed in.
Question 4: When a conflict exists between the IPC and a state plumbing code, which generally takes precedence?
- The IPC always supersedes state law
- The state code, since states adopt and amend model codes (Correct answer)
- The federal plumbing standard
- Whichever is more lenient
Correct answer: The state code, since states adopt and amend model codes
States adopt model codes like the IPC with local amendments, so the state-adopted version controls within that jurisdiction.
Question 5: Which action is required when a plumber discovers existing work that violates the current plumbing code during a renovation project?
- Ignore it if not part of the current scope
- Report it to the AHJ immediately (Correct answer)
- Correct it only if the owner agrees to pay
- Document it and continue working
Correct answer: Report it to the AHJ immediately
Discovered code violations must be reported to the AHJ, who will determine the required corrective action.
Question 6: A master plumber's license is typically required to do which of the following?
- Replace a faucet washer
- Pull permits and supervise plumbing work (Correct answer)
- Flush a water heater
- Unclog a drain with a hand snake
Correct answer: Pull permits and supervise plumbing work
Pulling permits and supervising plumbing installations are activities that require a master plumber license.
Question 7: Under most state laws, what happens to a plumbing permit if work is not commenced within a specified period (commonly 180 days)?
- The permit is automatically renewed
- The permit expires and must be reapplied for (Correct answer)
- The inspector issues a warning only
- The permit converts to a provisional status
Correct answer: The permit expires and must be reapplied for
Permits lapse if work does not begin within the jurisdiction's required commencement period, typically 180 days.
Master Plumber Exam Administration, Codes, and Regulations 2
Under the IPC, who is authorized to grant a variance from a code requirement when strict compliance would cause undue hardship?