Oklahoma Residential Journeyman Plumbing and Natural Gas Ultimate Exam Prep Rental Package

Prepare for the Oklahoma Residential Journeyman Plumbing and Natural Gas examination with an Ultimate Exam Prep Rental Package built around the technical references used for residential plumbing and natural gas preparation. This package combines highlighted and tabbed rental books, 1 year of course access, Application Service, residential plumbing review, natural gas preparation, plumbing mathematics, OSHA construction safety, and open-book reference navigation.

The Oklahoma Residential Plumbing Journeyman license is regulated by the Oklahoma Construction Industries Board. This classification is intended for plumbing work within the residential scope established by Oklahoma licensing rules. Candidates should prepare for residential water supply, drainage, vents, fixtures, piping materials, valves, natural gas piping, trade calculations, isometric analysis, and construction safety.

The Ultimate package includes the International Residential Code for One- and Two-Family Dwellings, 2018; Code of Federal Regulations - 29 CFR Part 1926 (OSHA); and Mathematics for Plumbers and Pipefitters, 8th Edition. All included rental books are highlighted and tabbed to help candidates organize their studies and develop efficient reference-navigation habits for the open-book examination.

Students also receive 1 year of course access, allowing time to work through the major examination subjects, revisit challenging topics, practice calculations, strengthen residential plumbing knowledge, review natural gas requirements, and become more comfortable navigating the approved references. Application Service is included as part of the Ultimate package.

Package Price: $1,245 plus a refundable $150 book deposit, for a total initial payment of $1,395.

Please allow up to 15 business days for Ultimate book package orders.

Exam Details

The Oklahoma Residential Journeyman Plumbing and Natural Gas examination is administered through PSI after the Oklahoma Construction Industries Board determines that an applicant meets the applicable licensing qualifications and is eligible for testing.

• Exam: Oklahoma Residential Journeyman Plumbing and Natural Gas
• Number of Questions: 85 scored questions
• Time Allowed: 180 minutes
• Passing Score: 75%
• Testing Provider: PSI

The examination is organized into ten technical categories that test residential plumbing knowledge, system installation, natural gas, mathematics, drawing interpretation, and safety.

• General Plumbing Knowledge and Regulations: 10 questions
• Piping, Valves, and Control Valves: 8 questions
• Fixtures and Equipment: 8 questions
• Water Supply: 10 questions
• Drains and Sewers: 10 questions
• Vents: 13 questions
• Traps, Interceptors, Indirect, and Special Waste: 5 questions
• Isometric Analysis: 7 questions
• Fuel Gas: 10 questions
• Safety: 4 questions

Vents is the largest individual examination category with 13 questions. Candidates should review vent installation and wet venting while understanding how residential vent systems work with fixtures and drainage piping.

General Plumbing Knowledge and Regulations contains 10 questions. Study areas include area and volume calculations, general code requirements, plumbing definitions, notches and holes in structural members, system testing, water-column concepts, and pipe offsets.

Piping, Valves, and Control Valves contains eight questions. Candidates should review piping connections, cast-iron piping, copper piping and tubing, steel piping, PVC, CPVC, plastic and PEX piping, and valves.

Fixtures and Equipment also contains eight questions and addresses fixture installation, water-heater installation, and requirements for residential plumbing fixtures. Candidates should understand how fixture requirements connect to water supply, drainage, and venting systems.

Water Supply contains 10 questions covering water-supply and distribution lines, protection of the potable water supply, and backflow. Candidates should practice identifying water-distribution requirements and locating related provisions efficiently.

Drains and Sewers contains 10 questions covering drain and sewer piping, building sewers, sewer and drain cleanouts, drainage fixture units, and drain and waste piping. Students should understand the relationship between fixture units, drainage sizing, cleanout requirements, and building drainage systems.

Isometric Analysis contains seven questions involving plumbing isometric drawings. Candidates should practice interpreting residential piping layouts and identifying the relationship between fixtures, drainage, vents, and piping arrangements.

Fuel Gas contains 10 questions and is an important part of the examination. Topics include gas piping conduit, general gas piping and valves, piping supports and hangers, pipe sizing, testing, installation and joining of gas pipe, and threads.

Safety contains four questions focused on construction activities, ladders, and fall-arrest systems. Candidates should become familiar with the OSHA construction reference so safety topics can be located efficiently during the examination.

Open Book Test

The Oklahoma Residential Journeyman Plumbing and Natural Gas examination is an open-book test. Candidates may use approved references in the examination center while following the testing provider's requirements for permitted materials.

The approved examination references for this residential journeyman test include the International Residential Code for One- and Two-Family Dwellings, 2018 edition with applicable Oklahoma revisions; Code of Federal Regulations - 29 CFR Part 1926 (OSHA) with applicable amendments; and Mathematics for Plumbers and Pipefitters, 8th Edition.

Reference materials may be highlighted, underlined, and indexed before testing. Permanent tabs may be used. Temporary removable tabs such as Post-it notes are not permitted. Candidates should also avoid adding written notes to references when those notes are not allowed by the testing rules.

Every rental reference included with this Ultimate package is highlighted and tabbed. This organization is intended to help candidates develop familiarity with the books during preparation rather than trying to learn their structure for the first time on examination day.

The International Residential Code should be used regularly during preparation for water supply, drainage, vents, fixtures, piping materials, residential plumbing requirements, and natural gas topics. Candidates should practice using the index, chapter structure, tables, definitions, and cross-references.

Mathematics for Plumbers and Pipefitters supports preparation for calculations involving dimensions, area, volume, pipe offsets, and other trade mathematics. Candidates should work through calculation problems repeatedly so they can identify the correct method efficiently.

Code of Federal Regulations - 29 CFR Part 1926 supports construction-safety preparation. Rather than searching broadly through the reference during the exam, students should practice locating common safety topics such as ladders, fall protection, and construction activities before test day.

A productive open-book strategy is to identify the question category first, select the correct reference, locate the applicable section, table, or formula, and then apply that information to the answer choices. Regular practice with highlighted and tabbed references can support a more organized approach.

Licensing Steps

The Oklahoma Construction Industries Board regulates plumbing journeyman licensing. Candidates pursuing the Residential Plumbing Journeyman classification should complete the applicable experience, application, examination, and licensing requirements.

1. Begin as a plumbing apprentice. Build qualifying plumbing experience while working within Oklahoma's plumbing licensing structure.
2. Maintain apprentice registration when required. Oklahoma experience used toward licensing generally must be verifiable through proper apprentice registration unless lawfully obtained under an applicable exemption.
3. Gain qualifying plumbing experience. Accumulate the experience required for journeyman examination eligibility while working under a licensed plumbing contractor.
4. Use qualifying education when applicable. Approved formal plumbing education may substitute for a portion of the experience requirement when the applicable state requirements are satisfied.
5. Submit the plumbing license application. Apply to the Oklahoma Construction Industries Board for the Residential Plumbing Journeyman examination.
6. Provide experience documentation. Submit the applicable employment, apprenticeship, education, or licensing documentation needed to demonstrate qualification.
7. Receive examination authorization. The Construction Industries Board reviews the application before the candidate proceeds to testing.
8. Schedule the examination through PSI. Approved candidates arrange the examination date, time, and testing location with the designated testing provider.
9. Prepare for Residential Plumbing and Natural Gas. Study residential plumbing code, natural gas, mathematics, isometric analysis, OSHA safety, and open-book reference navigation.
10. Complete the examination. Meet the applicable passing requirement as part of the Oklahoma licensing process.
11. Work within the Residential Journeyman scope. Once licensed, perform authorized residential plumbing work while employed and supervised by a licensed plumbing contractor.

Application Service is included with this Ultimate package to support candidates with organizing the Oklahoma Residential Plumbing Journeyman licensing application process and related documentation.

State Requirements

Applicants for an Oklahoma plumbing journeyman examination must be at least 18 years old and meet the applicable experience requirements established by the Oklahoma Construction Industries Board.

One standard qualification pathway requires three years of experience in the plumbing trade while employed by a licensed plumbing contractor. Equivalent verifiable plumbing experience gained while serving in the United States military may also qualify.

A current and good-standing out-of-state plumbing license may also be considered when it satisfies the applicable Oklahoma licensing requirements.

Approved formal plumbing education may substitute for part of the required experience. A qualifying plumbing educational program of at least 1,000 classroom hours may substitute for two years of experience, while a qualifying program of at least 500 classroom hours may substitute for one year of experience.

Applicants using Oklahoma plumbing experience toward licensing should maintain apprentice registration for qualifying periods when required. Candidates should keep accurate records of employers, work performed, apprenticeship periods, education, and plumbing experience.

The Residential Plumbing Journeyman classification limits the license holder to residential plumbing work within the scope established for the license. The residential category covers plumbing work for detached one- or two-family dwellings and qualifying multiple single-family dwellings such as townhouses not more than three stories in height with separate means of egress.

A licensed residential journeyman plumber must be employed and supervised by a licensed plumbing contractor when performing residential plumbing work. A residential journeyman may not independently contract to furnish plumbing labor or labor and materials.

Residential journeymen may not perform plumbing work beyond the limits of the residential license except when working as an apprentice under the direct supervision of an unlimited journeyman plumber or unlimited plumbing contractor as permitted by Oklahoma rules.

Oklahoma plumbing journeymen are also subject to continuing-education requirements. Licensed plumbing journeymen and contractors are required to complete six hours of continuing education within the 36 months preceding license expiration.

Reference Books

• International Residential Code for One- and Two-Family Dwellings, 2018
  Included Book: Highlighted and tabbed rental reference supporting residential plumbing preparation involving water supply, drainage, vents, fixtures, piping materials, structural considerations, natural gas, and other requirements applicable to residential plumbing systems.
• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  Included Book: Highlighted and tabbed rental safety reference supporting preparation for construction activities, ladder requirements, fall-arrest systems, and other applicable OSHA construction-safety topics.
• Mathematics for Plumbers and Pipefitters, 8th Edition
  Included Book: Highlighted and tabbed rental mathematics reference supporting measurements, area, volume, pipe offsets, piping applications, and trade calculations used in plumbing examination preparation.

All included rental books are highlighted and tabbed to support organized preparation and open-book reference navigation. Students should use the references throughout the course so important sections, formulas, tables, and technical topics become familiar before examination day.

Please allow up to 15 business days for Ultimate book package orders.

Test Information and Study Materials

A productive Oklahoma Residential Journeyman Plumbing and Natural Gas study plan should combine residential plumbing code knowledge, natural gas preparation, mathematics, isometric analysis, safety review, and repeated reference-navigation practice.

Prioritize venting. Vents is the largest individual examination category with 13 questions. Review vent installation, wet venting, and the relationship between vents, fixtures, and residential drainage systems.

Build water-supply knowledge. Study water-supply and distribution lines, potable-water protection, and backflow. Practice finding related requirements in the International Residential Code.

Review drains and sewers. Study building drains, building sewers, cleanouts, drainage fixture units, and drain and waste piping. Candidates should understand both system layout and applicable code requirements.

Learn piping materials. Review cast iron, copper, steel, PVC, CPVC, plastic, PEX, piping connections, and valves. Understanding the characteristics and installation requirements of different piping systems supports several exam categories.

Practice natural gas questions. Review pipe sizing, piping supports and hangers, valves, testing, joining methods, threaded connections, and general residential gas piping requirements.

Work on plumbing calculations. Use Mathematics for Plumbers and Pipefitters to practice area, volume, dimensions, offsets, and other plumbing mathematics. Develop a repeatable method for reading the problem, identifying known values, selecting the correct calculation, and checking the result.

Practice isometric analysis. Learn to interpret plumbing drawings and identify the relationships between fixtures, drains, vents, and piping. Isometric practice can also reinforce code navigation because candidates may need to connect a drawing to a technical requirement.

Prepare for OSHA safety. Review construction activities, ladders, fall-arrest systems, and other applicable safety material. Become familiar with the layout of the OSHA reference before examination day.

Use timed open-book drills. The examination provides 180 minutes for 85 scored questions. Timed practice can help candidates develop a balance between answering from trade knowledge and using the books when a reference lookup is needed.

Use the highlighted and tabbed books throughout preparation. The value of prepared references increases when candidates actively practice with them. Repeated navigation helps build familiarity with where important subjects are located.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep supports Oklahoma Residential Journeyman Plumbing and Natural Gas candidates through organized study guidance, plumbing trade-focused review, practice-oriented preparation, reference navigation, and confidence-building study structure.

The Ultimate Exam Prep Rental Package provides highlighted and tabbed rental references so candidates can work with organized study materials throughout preparation. Instead of approaching the International Residential Code, OSHA reference, and plumbing mathematics book as unfamiliar materials, students can use them repeatedly during their course access.

With 1 year of course access, candidates have time to work through residential plumbing systems, natural gas, calculations, isometric drawings, and safety without limiting preparation to a short study window. Students can revisit difficult subjects and spend additional time where improvement is needed.

Trade-focused review helps connect code requirements with the plumbing work candidates encounter in residential applications. Understanding how water supply, drainage, venting, fixtures, piping materials, and gas systems operate together can make technical questions easier to interpret.

Practice-oriented preparation supports development of problem-solving skills. Candidates can work through plumbing questions, mathematical calculations, isometric analysis, and code lookups while building a repeatable approach for the open-book examination.

Reference-navigation practice is particularly important because the examination includes multiple books and technical subjects. Candidates can practice identifying whether a question belongs in the residential code, mathematics reference, or OSHA material before beginning the lookup process.

Application Service is included with the Ultimate package to support candidates with organizing the Oklahoma Residential Plumbing Journeyman application process while they concentrate on examination preparation.

By combining highlighted and tabbed rental books, 1 year of course access, Application Service, technical study guidance, and repeated open-book practice, 1 Exam Prep provides an organized preparation path for candidates pursuing the Oklahoma Residential Journeyman Plumbing and Natural Gas license.

Frequently Asked Questions

What is included in the Oklahoma Residential Journeyman Plumbing and Natural Gas Ultimate package?

The package includes highlighted and tabbed rental copies of the International Residential Code for One- and Two-Family Dwellings, 2018; Code of Federal Regulations - 29 CFR Part 1926 (OSHA); and Mathematics for Plumbers and Pipefitters, 8th Edition. It also includes 1 year of course access and Application Service.

How much does the Ultimate package cost?

The package price is $1,245 plus a refundable $150 book deposit, for a total initial payment of $1,395.

Is the $150 book deposit refundable?

Yes. The $150 amount is identified as a refundable book deposit for the rental package.

Are all included books highlighted and tabbed?

Yes. All included rental books are highlighted and tabbed to support organized study and open-book reference navigation.

How long should I allow for my Ultimate book package order?

Please allow up to 15 business days for Ultimate book package orders.

Is the Oklahoma Residential Journeyman Plumbing and Natural Gas exam open book?

Yes. The examination is open book. Candidates may use approved references while following the applicable PSI rules for examination materials.

How many questions are on the exam?

The Oklahoma Residential Journeyman Plumbing and Natural Gas examination contains 85 scored questions. Candidates have 180 minutes and must achieve a 75% passing score.

What is the largest exam category?

Vents is the largest individual category with 13 questions. General Plumbing Knowledge and Regulations, Water Supply, Drains and Sewers, and Fuel Gas each contain 10 questions.

Does the examination include natural gas?

Yes. Fuel Gas contains 10 questions addressing gas piping, valves, supports, hangers, pipe sizing, testing, installation, joining methods, and threaded connections.

Does the exam include plumbing mathematics?

Yes. Candidates should prepare for plumbing calculations involving measurements, area, volume, offsets, and other trade mathematics. Mathematics for Plumbers and Pipefitters, 8th Edition is an approved exam reference.

Does the examination include isometric drawings?

Yes. Isometric Analysis contains seven questions. Candidates should practice interpreting residential plumbing drawings and identifying fixture, drainage, vent, and piping relationships.

What type of work can an Oklahoma Residential Plumbing Journeyman perform?

The Residential Plumbing Journeyman classification is limited to residential plumbing work within the scope established by Oklahoma licensing rules. A residential journeyman must work under a licensed plumbing contractor and may not independently contract to furnish plumbing labor or materials.

Does this package include 1 year of course access?

Yes. The Ultimate package includes 1 year of course access for residential plumbing, natural gas, mathematics, OSHA safety, isometric analysis, and reference-navigation preparation.

Is Application Service included?

Yes. Application Service is included with this Ultimate package to support candidates with organizing the Oklahoma Residential Plumbing Journeyman licensing application process.