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Master Plumber / Gas Fitter

Apply for the License
Maryland State Board of Plumbing
500 N. Calvert St, Room 302
Baltimore, MD  21202
Phone: (410) 230-6231
Exam Provider
PSI Licensure: Certification
3210 E. Tropicana
Las Vegas, NV  89121
Phone:  (800) 733-9267
Exam Type
Exam Content

The exam content shown below only lists main category headings.  Please consult the PSI exam bulletin from the button below for more detailed information about subject sub-categories.

Topics# of
Plumbing Fundamentals & Safety5
Materials, Uses & Specifications6
Traps, Interceptors & Backwater Valves4
Plumbing Fixtures, Fixture Fittings & Plumbing Appliances4
Water Supply Systems8
Backflow Prevention10
Drain, Waste & Vent Systems13
Special Topics3
Gas Appliances & Piping40
Plumbing Mathematics7
Total number of test questions:
Time allowed (minutes):
Books Allowed in the Exam
International Plumbing Code, 2018, ICC
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International Fuel Gas Code, 2018, ICC
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Mathematics for Plumbers and Pipefitters, 8th Edition, Lee Smith
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Any standard backflow text
Code of Federal Regulations, 29 CFR Part 1926 (OSHA), GPO [or] (OSHA) Selections by PSI
Buy from PSI
Available Study Materials
PSI OSHA Selections
Study Guide

Sample questions are based on the PSI publication titled “29 CFR PART 1926 Selections, as of June 2013” (highlighted in green above).

This file contains approx. 800 sample questions.

REMINDER:  PSI uses this book for many exams they offer.  Not all sections of this code will apply to your exam.

We also include a table showing the relationship between our questions and OSHA code sections.  Corrections to the original PSI publication are noted.

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