Kansas City, MO Master Plumber with Gas (ICC G27, 2018 IFGC/IPC) Exam: Step-by-Step Study Guide
Preparing for the Kansas City, MO Master Plumber with Gas (ICC G27, 2018 IFGC/IPC) exam is easier one step at a time. This guide starts with the key facts from the official bulletin, then covers the topics on the exam, the reference books, sample questions with answers, and a simple way to prepare. Pearson VUE gives the exam.
Kansas City, MO Master Plumber with Gas (ICC G27, 2018 IFGC/IPC) Exam Overview
Start with the facts. Here's what the official bulletin says:
| Questions | 100 questions |
| Time limit | 4 hours |
| Passing score | a minimum score of 70 |
| Books in the exam room | Open book |
| Exam fee | $115 |
On exam day
- Questions are four-option multiple choice with one correct answer.
References you may bring
- International Fuel Gas Code (2018)
- International Plumbing Code (2018)
Scheduling, changes and retakes
- Exams are scheduled through Pearson VUE at www.pearsonvue.com/ICC.
- Results for electronically administered examinations are available immediately after the exam is completed.
- You must wait 10 days before retaking a failed exam.
- After passing, contact the jurisdiction for any other requirements needed to become licensed.
Source: Kansas City, Missouri Examination Information Bulletin (ICC Contractor/Trades), PUBLISHED November 10, 2025. Check the bulletin before test day: fees and rules can change.
Topics on the Kansas City, MO Master Plumber with Gas (ICC G27, 2018 IFGC/IPC) Exam
Next, the content. The official content outline has 8 topics:
| Topic | Questions | Share of the exam |
|---|---|---|
| Administration and General Regulations | 36 | 36% |
| Plumbing Fixtures | 13 | 13% |
| Water Supply and Distribution | 9 | 9% |
| Sanitary Drainage | 8 | 8% |
| Plumbing Vent Requirements | 6 | 6% |
| Traps, Interceptors, and Separators | 5 | 5% |
| Storm Drainage | 2 | 2% |
| Gas Piping | 21 | 21% |
A Simple Plan to Prepare for the Kansas City, MO Master Plumber with Gas (ICC G27, 2018 IFGC/IPC) Exam
Step one is the books. This is an open-book exam, so the references on the bulletin's list are what you'll work from, while you study and in the exam room. Get the editions the bulletin names.
Step two is learning your way around them. Go through each book's table of contents and index until you know where the major subjects are. You don't need to memorize the books. You need to find things in them.
Step three is marking them up. Highlight the sections you use most. Check the bulletin's rules on tabs and markings before you add any.
Step four is timed practice. Our practice exams run on a clock, so you get used to the real exam's pace: about 2 minutes 24 seconds per question.
Along the way, give the most time to the biggest topics. Administration and General Regulations and Gas Piping make up 57% of the exam.
The last step is consistency. Keep practicing until you pass several practice exams in a row. That's the signal you're ready.
Reference Books for the Kansas City, MO Master Plumber with Gas (ICC G27, 2018 IFGC/IPC) Exam
The references listed for this open-book exam are the 2018 International Fuel Gas Code and the 2018 International Plumbing Code.
Where to get them:
On Test Day
Go through the exam at a steady pace. On your first pass, answer the questions you know and bookmark the ones you don't. Every exam lets you come back to bookmarked questions, but some lock the ones you've seen once you take a break, so finish your bookmarks first.
On your second pass, return to your bookmarks one at a time. You have 4 hours for 100 questions, which is about 2 minutes 24 seconds per question, so keep moving and don't let one question hold you up. Before you finish, answer anything you skipped. A blank can't earn a point.
Study Tips
Take this practice exam several times. The goal is to consistently clear your exam's passing score — often around 70–75% — so passing feels routine before you walk into the real test.
Don't choose a word simply because it looks familiar. On difficult questions, you may not recognize several words in the answer choices—but that doesn't mean they're invented. Test writers only use real words. If you recognize the words in only one answer choice, focus on that choice and evaluate it carefully. If it's correct, great. If not, eliminate it. Every answer choice you eliminate improves your odds, even if you end up guessing among the remaining options.
Be alert to hedging words like likely, may, can, sometimes, usually, generally, and rarely—question writers use them to account for exceptions. An answer choice is often wrong simply because it allows no exceptions. Similarly, avoid choices containing absolute terms like exactly and always.
Don't let the clock rattle you. It's easy to feel overwhelmed when facing a page full of questions, a racing mind, and a ticking clock. Stay calm and stick to your planned pace. If you've been monitoring your progress consistently, you'll have enough time to finish. Even if the final minutes feel rushed, as long as you have only as many questions remaining as you should at that point, you're exactly where you need to be.
On technical questions, don't get bogged down in unfamiliar terminology. If you don't recognize a term, you're unlikely to figure it out on the spot—acknowledge it quickly and move on. Use the surrounding context, answer choices, and familiar terms to guide your reasoning, but don't linger on any single difficult question.
Sample Kansas City, MO Master Plumber with Gas (ICC G27, 2018 IFGC/IPC) Practice Questions
Here are a few questions from our practice question bank, each with its answer and reference.
Sample 1 — Water Supply and Distribution
Question: In laying out the hot water piping for a sprawling single-story dwelling, what is the maximum developed length permitted from the source of hot water to a fixture requiring hot or tempered water, where no recirculation or heat-traced piping is provided?
- A. 25 feet
- B. 100 feet
- C. 50 feet
- D. 75 feet
Correct Answer: C
IPC 607.2 limits the developed length of hot or tempered water piping from the source of hot water to such fixtures to 50 feet; recirculating system piping and heat-traced piping are considered sources of hot or tempered water.
Reference: IPC 2018 Section 607.2 (Chapter 6 Water Supply and Distribution)
Sample 2 — Sanitary Drainage
Question: Where horizontal branches connect to the base of a drainage stack, the connection point must be located not less than how many times the diameter of the drainage stack downstream from the stack?
- A. 5 times
- B. 10 times
- C. 12 times
- D. 8 times
Correct Answer: B
Per IPC Section 704.3, horizontal branches shall connect to the bases of stacks at a point located not less than 10 times the diameter of the drainage stack downstream from the stack.
Reference: IPC 2018 Section 704.3
Sample 3 — Plumbing Vent Requirements
Question: Fixtures on a horizontal branch drain in a high-rise are vented by a branch-type air admittance valve. Under what condition must that horizontal branch also be provided with a relief vent connected to a vent stack, stack vent, or extended outdoors?
- A. The branch is more than four branch intervals from the base of the stack
- B. The branch is more than two branch intervals from the top of the stack
- C. The branch is more than six branch intervals from the top of the stack
- D. The branch is more than four branch intervals from the top of the stack
Correct Answer: D
Per IPC 918.3.1, where a horizontal branch served by an individual or branch-type air admittance valve is located more than four branch intervals from the top of the stack, the branch must be provided with a relief vent connecting to a vent stack or stack vent, or extending outdoors. The six-branch-interval figure applies to stack-type air admittance valves under IPC 918.3.2.
Reference: IPC 2018 Chapter 9 Vents — Sections 918.3.1 and 918.3.2
Sample 4 — Traps, Interceptors, and Separators
Question: Which of the following trap types is prohibited but has an exception allowing its use as a solids interceptor or for chemical waste systems?
- A. Bell trap
- B. Drum trap
- C. S-trap
- D. Crown-vented trap
Correct Answer: B
Per IPC Section 1002.3 item 6, drum traps are prohibited. However, an exception permits drum traps used as solids interceptors and drum traps serving chemical waste systems.
Reference: IPC 2018 Section 1002.3
Practicing Online vs. With a PDF
A PDF lets you read questions at your own pace. The real exam runs on a clock. Our practice exams are timed and on a screen, so you practice finding answers with the clock running. Each attempt draws a new set of questions from our bank, and your results show your score by topic, so you always know what to study next.
Your Next Step
Take the free Kansas City, MO Master Plumber with Gas (ICC G27, 2018 IFGC/IPC) practice exam to see where you stand. Then study the topics that need the most attention, one at a time. For the official rules, read the exam bulletin, and see the licensing board's website.