ICC G33 Master Gas Pipe Fitter (2018 IFGC) Exam Prep Checklist
Everything for the ICC G33 Master Gas Pipe Fitter (2018 IFGC) exam in one place: the bulletin's key facts, the topics and how many questions each carries, the reference books, sample questions with answers, and a prep checklist. Pearson VUE gives the exam.
ICC G33 Master Gas Pipe Fitter (2018 IFGC) Exam Facts
From the official bulletin:
| Questions | 75 questions |
| Time limit | 3 hours |
| Passing score | 70% correct |
| Books in the exam room | Open book |
| Exam fee | $120 |
On exam day
- Test questions are in four-option, multiple-choice format with one scored correct answer.
- You may bring copyrighted, bound books to the test administration, including those specifically listed as approved references. However, training materials such as presentations, study guides, or practice questions are not permitted. All exam questions are based solely on the approved reference list, and only those references may be used as the basis for appealing exam questions.
References you may bring
- 2018 International Fuel Gas Code
Scheduling, changes and retakes
- Exams are scheduled through PearsonVUE at www.pearsonvue.com/ICC, where candidates can create an account, schedule an exam, locate a test center, purchase vouchers and request accommodations.
- Results for examinations taken electronically are available immediately after the examination is completed.
- You must wait 10 days before retaking a failed exam.
- After passing, contact the jurisdiction in which you wish to be licensed for any other requirements, because ICC is not a licensing agency.
Source: National Contractor/Trades Examination Information Bulletin, PUBLISHED June 30, 2026; ICC Exam Catalog, checked October 6, 2026. Check the bulletin before test day: fees and rules can change.
ICC G33 Master Gas Pipe Fitter (2018 IFGC) Exam Topics
The official content outline has 6 topics:
| Topic | Questions | Share of the exam |
|---|---|---|
| General Requirements | 37 | 49% |
| Water Heaters | 4 | 5% |
| Appliances and Equipment | 11 | 15% |
| Fuel Supply System Sizing | 4 | 5% |
| Combustion Air | 10 | 13% |
| Chimneys and Vents | 9 | 12% |
ICC G33 Master Gas Pipe Fitter (2018 IFGC) Exam Prep Checklist
- Get the reference books the bulletin lists, in the editions it names.
- Learn each book's table of contents and index first.
- Highlight the sections you use most. The exam facts above list the bulletin's rules on tabs and markings, so follow them exactly.
- Start with the biggest topics: General Requirements and Appliances and Equipment (64% of the exam).
- Take our timed practice exams until you pass several in a row.
- After each attempt, look up every question you missed in your book.
- Practice at the real exam's pace: about 2 minutes 24 seconds per question.
ICC G33 Master Gas Pipe Fitter (2018 IFGC) Exam Reference Books
The listed reference is the 2018 International Fuel Gas Code.
Where to get them:
Test Day Checklist
- First pass: answer every question you know. Bookmark the rest. Every exam lets you return to bookmarked questions.
- Second pass: work through your bookmarks.
- Pace: 3 hours for 75 questions, which is about 2 minutes 24 seconds per question.
- Last step: answer anything still blank. A blank can't earn a point.
Study Tips
Practicing against a ticking clock is the best way to beat exam-clock anxiety. Use these timed tests to build your pacing, so you learn to move steadily and never burn too long on a single question. By test day, the format feels routine.
This practice exam mirrors the real Pearson VUE exam — the same number of questions, drawn from the same topics. Practicing in that format now means no surprises when you sit for the real thing.
Don't be distracted by an answer that is merely factually true—focus on whether it actually answers the question. Always return to the question and verify that your chosen answer directly addresses what's being asked, not just that it's a true statement. Also, when two answers seem equally correct, read all choices carefully and select the one that best answers the question.
Our practice exam is specifically designed to mimic the testing conditions at all exam centers. While untimed PDF study guides might help with studying, they don’t prepare you for the challenge of managing your time during an actual test.
ICC G33 Master Gas Pipe Fitter (2018 IFGC) Sample Questions
From our practice question bank, with answers and references:
Sample 1 — Chimneys and Vents
Question: You are the master on a high-efficiency boiler retrofit in a tight urban lot. The Category IV vent system will terminate through the outside wall and discharge flue gases perpendicular to the adjacent wall, and the adjacent building sits closer than 10 feet horizontally. Under what vertical relationship to an operable opening in that adjacent building does the 10-foot horizontal separation NOT apply?
- A. 2 feet above or 10 feet below the opening
- B. 3 feet above or 25 feet below the opening
- C. 4 feet above or 10 feet below the opening
- D. 2 feet above or 25 feet below the opening
Correct Answer: D
Per IFGC 2018 Section 503.8, Item 5, vent systems for Category IV appliances that terminate through an outside wall and discharge flue gases perpendicular to the adjacent wall shall be located not less than 10 feet horizontally from an operable opening in an adjacent building. That requirement does not apply to vent terminals that are 2 feet or more above, or 25 feet or more below, operable openings.
Reference: IFGC 2018 Section 503.8, Item 5
Sample 2 — Water Heaters
Question: You are reviewing plans for a gas clothes dryer installation in a residential closet. The closet has no external openings. What is the minimum makeup air opening area that must be provided in the closet enclosure?
- A. 150 square inches
- B. 50 square inches
- C. 75 square inches
- D. 100 square inches
Correct Answer: D
Per IFGC Section 614.6, where a closet is designed for the installation of a clothes dryer, an opening having an area of not less than 100 square inches for makeup air shall be provided in the closet enclosure, or makeup air shall be provided by other approved means.
Reference: IFGC 2018 Section 614.6, Chapter 6
Sample 3 — Fuel Supply System Sizing
Question: The design pressure loss in a gas piping system under maximum probable flow conditions must ensure what at the appliance inlet?
- A. The pressure drop does not exceed 1 inch water column under any circumstances
- B. The supply pressure at the appliance is at least twice the minimum pressure required by the appliance
- C. The supply pressure at the appliance does not exceed the maximum rated pressure of the appliance
- D. The supply pressure at the appliance is greater than or equal to the minimum pressure required by the appliance
Correct Answer: D
Per IFGC Section 402.6, the design pressure loss in any piping system under maximum probable flow conditions, from the point of delivery to the inlet connection of the appliance, shall be such that the supply pressure at the appliance is greater than or equal to the minimum pressure required by the appliance.
Reference: IFGC 2018 Section 402.6
Sample 4 — General Requirements
Question: When a gas piping system is connected to appliances or equipment that are part of a building or structure moved into or within the jurisdiction, the installation must comply with which set of requirements?
- A. Only the manufacturer's original installation instructions
- B. The provisions for existing installations, with no additional requirements
- C. The provisions for new installations
- D. Only the provisions that were in effect when the building was originally constructed
Correct Answer: C
Per IFGC Section 102.7, except as determined by Section 102.2, installations that are a part of buildings or structures moved into or within the jurisdiction shall comply with the provisions of this code for new installations. This means the gas piping and appliance installations in moved buildings must meet current code requirements.
Reference: IFGC 2018 Section 102.7
Online Practice vs. a PDF
- Timed: you practice finding answers under time pressure, not just reading them.
- Bookmarks: flag questions and come back, the way you will on test day.
- New sets: each attempt draws new questions from our bank.
- Scored by topic: your results show which outline topics need more study.
Next Step
- Take the free ICC G33 Master Gas Pipe Fitter (2018 IFGC) practice exam.
- Study the topics where you scored lowest.
- Read the exam bulletin for the official rules, and see the licensing board's website.