ICC G34 Journeyman Gas Pipe Fitter Exam (2018 IFGC)

How to Pass the ICC G34 Journeyman Gas Pipe Fitter (2018 IFGC) Exam

You don't have to guess how to prepare for the ICC G34 Journeyman Gas Pipe Fitter (2018 IFGC) exam. This guide lays it out: the key facts from the official bulletin, the topics on the test, the books you need, sample questions with answers, and a study plan you can follow. Pearson VUE gives the exam.

ICC G34 Journeyman Gas Pipe Fitter (2018 IFGC) Exam Basics

Here's what the official bulletin says about the exam:

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.

What's on the ICC G34 Journeyman Gas Pipe Fitter (2018 IFGC) Exam

The official content outline splits the exam into 5 topics:

Your ICC G34 Journeyman Gas Pipe Fitter (2018 IFGC) Study Plan

Your books are your best friend on this exam. It's open book, so the references on the bulletin's list are what you'll use on test day. Get your own copies in the editions the bulletin names.

Get to know them early. Spend time with each book's table of contents and index until you can find any major subject quickly. On an open-book exam, finding answers fast is the skill that counts.

Make the books yours. Highlight the sections you keep coming back to. The exam facts above list the bulletin's rules on tabs and markings, so follow them exactly.

Put your energy where the points are. General Requirements and Appliances and Equipment make up 64% of the exam, so start there.

Practice with the clock running. Our timed practice exams help you build the pace the real exam needs: about 2 minutes 11 seconds per question. Every attempt is another rep.

Keep going until you pass practice exams consistently. One good score is a great start. A few passing scores in a row is how you know you're ready.

Books You'll Need for the ICC G34 Journeyman Gas Pipe Fitter (2018 IFGC) Exam

The listed reference is the 2018 International Fuel Gas Code.

Where to get them:

• IFGC 2018

Test Day Tips

Start with a quick pass through the whole exam. Answer every question you're sure about and bookmark the rest. Every exam lets you return to bookmarked questions, so nothing is lost by moving on.

Then come back to your bookmarks and work through them one at a time. Keep an eye on the clock: you have 2 hours for 55 questions, which is about 2 minutes 11 seconds per question. Before you finish, make sure every question has an answer. A blank can't earn a point.

Study Tips

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.

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.

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.

Reading the material cover to cover usually isn't enough to pass. This is a multiple-choice exam, and multiple choice rewards practice — the more questions you work through under real conditions, the more the terminology and question style become second nature.

Try These ICC G34 Journeyman Gas Pipe Fitter (2018 IFGC) Practice Questions

Give these a try. They come from our practice question bank, each with its answer and reference.

Sample 1 — Combustion Air

Question: You are a journeyman plumber installing a gas furnace in a utility closet that receives all combustion air through ducts from the outdoors. The ducts terminate in the closet. According to code, which of the following requirements applies to horizontal upper combustion air ducts?

• A. They must maintain a minimum 2-percent slope in either direction
• B. They must be insulated where passing through unconditioned spaces
• C. They shall not slope downward toward the source of combustion air
• D. They must slope downward toward the source of combustion air

Correct Answer: C

Per IFGC Section 304.11, Item 6, horizontal upper combustion air ducts shall not slope downward toward the source of combustion air. This prevents condensation or other issues from flowing back toward the air source and ensures proper air delivery.

Reference: IFGC 2018 Section 304.11

Sample 2 — 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 3 — General Requirements

Question: The IFGC covers piping systems for natural gas with an operating pressure of what maximum value or less?

• A. 20 psig
• B. 100 psig
• C. 125 psig
• D. 50 psig

Correct Answer: C

Per IFGC Section 101.2.2, the code covers piping systems for natural gas with an operating pressure of 125 psig or less, and for LP-gas with an operating pressure of 20 psig or less.

Reference: IFGC 2018 Section 101.2.2

Sample 4 — Appliances and Equipment

Question: Which testing standard applies to unit heaters?

• A. ANSI Z83.8/CSA 2.6
• B. ANSI Z21.47/CSA 2.3
• C. ANSI Z21.86/CSA 2.32
• D. ANSI Z21.11.2

Correct Answer: A

Per IFGC Section 620.1, unit heaters shall be tested in accordance with ANSI Z83.8/CSA 2.6 and shall be installed in accordance with the manufacturer's instructions.

Reference: IFGC 2018 Section 620.1, Chapter 6

Why Practice Online?

Reading questions in a PDF is a start, but it doesn't prepare you for the clock. Our practice exams are timed and on a screen, so you build speed along with knowledge. Each attempt draws a new set of questions from our bank, and your results show your score by topic so you know where to focus next.

Ready to Start?

Take the free ICC G34 Journeyman Gas Pipe Fitter (2018 IFGC) practice exam and see where you stand today. Then focus on the topics that need the most work. For the official rules, read the exam bulletin, and see the licensing board's website.