Exam P1
Residential Plumbing Inspector
Verifying installation and testing of piping systems, required fixtures, approved materials, flow rates, pressures and protection of the potable water supply and distribution system, including fuel gas piping combustion air and venting.
- Questions
- 60
- Time limit
- 120 min
- Per question
- 120 sec
- Book
- Open
Where the marks sit
Sanitary Drainage carries 23 percent on its own. Study time should follow this, not the order of the chapters.
Transcribed from ICC's published P1 content outline. Areas sum to 100 percent.
Full topic breakdown
Where candidates lose the clock on P1
Each of these is a term the exam words one way and the code files another way.
| You are looking for | The code calls it |
|---|---|
| p-trap under the sink | Traps, under sanitary drainage |
| backflow prevention | Water supply and protection |
Common questions
How many questions are on the ICC P1 exam?
The P1 Residential Plumbing Inspector exam has 60 multiple-choice questions with a 120-minute limit, which works out to about 120 seconds per question.
Is the ICC P1 exam open book?
Yes. The P1 is an open-book exam. The constraint is time rather than recall: you have roughly 120 seconds per question including the lookup.
How long is the ICC P1 exam?
120 minutes, or 2 hours, for 60 questions.
What is on the ICC P1 exam?
6 topic areas. The heaviest is Sanitary Drainage at 23 percent, followed by Vents at 22 percent. The full weighting is published by ICC and reproduced on this page.
Which code book do I need for the P1 exam?
The International Residential Code is the primary reference. Confirm the edition your jurisdiction has adopted, because adopted editions vary by state and the exam is written to a specific one.
The kit that goes on the table
2024 IRCThe book itself
2021 IRCIf you register on 2021
2024 Fast-TabsPlace them yourself
Construction Master ProFeet-inch math, no errorsMatch the book and tabs to the edition you register for.Confirm which, first.