1.5 Exam Format, Approved References & Open-Book Lookup Strategy

Exam Format, Approved References & Open-Book Lookup Strategy

1. Who runs this exam

The Plumbing and Mechanical Systems Board, under the Department of Inspections, Appeals, and Licensing, has contracted with Kirkwood Community College to conduct its examination program. That single fact clears up most of the confusion candidates arrive with, because national prep sites frequently list Iowa as a PSI state. It is not, for plumbing and mechanical licensure.

The process runs in a fixed order:

1. Apply to the board for examination approval, and pay the $35 application fee per trade examination. Journeyperson candidates may apply up to six months before completing the 48 months of required apprentice credit. Applicants qualifying on four years of experience earned prior to 2010 must attach a notarized Affidavit of Employment or the application will not be processed.
2. Wait for board approval.
3. Register with Kirkwood and pay the examination fee. Registration is taken by phone; examination fees are non-refundable and non-transferable.
4. Contact the test center of your choice to schedule an appointment. Kirkwood registers you; the test center books the seat.
5. Take the exam. Your score appears on screen at the end as a percent of correct answers.
6. Apply to the board for post-examination licensure. Passing is not a license. A passing score expires if you do not apply for the license within two years of notification.

Test cities include Ankeny, Des Moines, Dubuque, Cedar Falls, Cedar Rapids, Coralville, Council Bluffs, Creston, Estherville, Fort Dodge, Hiawatha, Ottumwa, Marshalltown, Mason City, Sheldon, and Sioux City.

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2. The format, in one table

Do the arithmetic on the time: 180 minutes ÷ 75 questions = 2 minutes 24 seconds per question. That number should govern how you prepare. It is enough time to confirm an answer in the code book. It is nowhere near enough time to learn one there.

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3. The official content outline

This is the blueprint the exam is written from. Every subject area is a chapter of the Uniform Plumbing Code:

Read that table as a study budget. Drainage and vents together are 40 percent of the exam — 30 of 75 questions. Storm drainage alone outweighs fixtures, water heaters, general regulations, indirect wastes, and traps individually, and it is the chapter most candidates skip. Note also what is not on this outline: there is no isometric-drawing subject area on the journeyperson exam. (The master plumber outline does include Isometric at 8 percent — a difference worth knowing if you are studying from a master-level book.)

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4. The two references you may bring

Exactly two, and no more:

1. 2024 Uniform Plumbing Code, published by the International Association of Plumbing and Mechanical Officials (IAPMO).
2. Iowa State Plumbing Code 2024 — Amendment Booklet, available from the Department of Inspections, Appeals, and Licensing website.

That is the entire approved list for this exam. The International Plumbing Code and the International Fuel Gas Code are not allowed references, which is the deepest reason this guide keeps distinguishing UPC rules from IPC rules: the wrong book is not merely a wrong answer, it is not in the room.

One helpful nuance from the official instructions: although exam questions are based on information from a certain book edition, references brought to the exam may be from any edition. An older UPC will still get you to the right chapter. It will not, however, contain the Iowa amendments — so the amendment booklet is not optional. Several of the most testable Iowa rules exist only there: the substituted trap-arm Table 1002.2, the wet-vent sizing sentence in Section 908.2.2, the 60-inch burial depth in Section 609.1, the floor drain in rooms with a water heater in Section 418.3, the backwater valve rewrite in Section 710.1, and the CSST amendments in Chapter 12.

How your books may be marked

Reference materials are checked before and after the examination, and any reference written in during the exam will be confiscated. Scratch paper is provided by the test center and collected at the end.

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5. Exam-day logistics

• Arrive at least 30 minutes early to verify identification and sign in.
• Bring government-issued photo identification with both a current photo and your signature, and a name that exactly matches your registration, including suffixes such as "Jr" or "III". Failure to present acceptable ID means you do not test that day.
• Bring the login email Kirkwood sends within an hour of registration, subject line "[Exam name] (online) Class Log-in Information." Credentials are emailed only once, on the first day you register, and are the same for every state exam you take. Check spam.
• If you leave the testing room while the exam is in progress you must sign out and back in, and you lose exam time.
• Testing generally does not occur on New Year's Day, Martin Luther King Jr. Day, Presidents' Day, Memorial Day, Independence Day, Labor Day, Thanksgiving, or Christmas.
• ADA accommodations are available at no additional charge; the application and supporting documentation must be submitted at least two weeks before the exam date. Note that a language barrier is not treated as a disability.
• Appeals about exam content, registration, scheduling, or test administration must be in writing and signed — faxes are not accepted because an original signature is required — and must include your name, Social Security number, exam title, date tested, and the details of your concern.

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6. An open-book strategy that fits 2 minutes 24 seconds

Tab before you study, not after. Build your tabs around the content outline above, and give the two 20 percent chapters the most granular tabs you own. At minimum, tab: Table 702.1 (DFU values), Table 703.2 (drainage and vent capacity and length), Section 706 (changes of direction), Section 707 (cleanouts), Section 708 (grade), Chapter 9 section headings, Table 1103.1, 1103.2, and 1103.3 (storm sizing), Chapter 6 and Appendix A (water sizing), Chapter 5 (water heaters), and Chapter 12 (fuel gas). In the amendment booklet, tab 425.4 and flag the sub-items by UPC chapter.

Sort questions into three piles on the first pass.

1. Know it cold — answer and move on. These fund the time for the others.
2. Know where it lives — one lookup, 30 to 45 seconds. Mark and answer.
3. Multi-step calculation — a sizing problem with an area, a rate, and a slope. Skip on the first pass, come back with the remaining time, and work it on scratch paper.

Write the givens down before you open the book. For a storm question that means area, rainfall rate, and slope. For a drainage question, total DFU, orientation, and water closet count. Nearly every avoidable wrong answer in an open-book plumbing exam comes from reading the right table in the wrong column.

Check the amendment booklet whenever the answer feels familiar. The Iowa exam is written for Iowa. If a question is about trap arm length, wet vent size, burial depth, backwater valves, fixture counts, CSST, or floor drain locations, there is a real chance the model UPC answer is a distractor and the amendment booklet holds the right one.