Nevada Plumbing And Heating Contractor (C-1) Books Allowed into Exam Package

Prepare for the Nevada Plumbing And Heating Contractor (C-1) examination with a focused exam-room package containing the five code books approved for use during the open-book trade test. This package includes the Uniform Plumbing Code, 2018, Uniform Mechanical Code, 2018, NFPA 13: Installation of Sprinkler Systems, 2019, NFPA 54 - Standard for National Fuel Gas Code, 2012, and NFPA 58 - Standard for Liquid Petroleum Gas Code, 2014.

The Nevada C-1 Plumbing and Heating Contractor examination is an open-book test. Because the exam covers a wide range of plumbing and mechanical subjects, candidates need to know more than the content of each code. They also need to know which reference is most likely to contain the answer to a particular question and how to move through each book efficiently.

The C-1 examination contains 120 questions, allows 5 hours for completion, and requires 84 correct answers to pass. The exam covers plumbing, heating, gas systems, fire sprinklers, hydronics, chilled-water piping, industrial piping, safety, sheet metal, water heaters, venting, storm drainage, plumbing mathematics, and other subjects within the broad C-1 scope.

This package is designed specifically for candidates who want the books allowed into the Nevada C-1 examination. It does not include supplemental study-only references. Instead, it focuses on the five approved code books candidates can use while taking the trade test.

The Uniform Plumbing Code, 2018 supports the core plumbing portions of the exam. The Uniform Mechanical Code, 2018 supports heating, mechanical, venting, hydronic, and related topics. NFPA 13, 2019 supports fire sprinkler questions, NFPA 54, 2012 supports natural gas and fuel-gas systems, and NFPA 58, 2014 supports LP-Gas systems.

Because five different references may be used, organized preparation is essential. Candidates should practice recognizing the subject of a question, selecting the correct code book, locating the applicable section or table, and returning to the exam without losing unnecessary time.

What You Get

• Uniform Plumbing Code, 2018 — exam-room reference for water supply, drainage, waste and vent systems, fixtures, backflow protection, traps, cleanouts, storm drainage, joints, and general plumbing requirements.
• Uniform Mechanical Code, 2018 — exam-room reference supporting mechanical systems, hydronics, heating, cooling, venting, equipment, piping, and related requirements.
• NFPA 13: Installation of Sprinkler Systems, 2019 — exam-room reference supporting fire sprinkler system installation and related requirements.
• NFPA 54 - Standard for National Fuel Gas Code, 2012 — exam-room reference supporting natural gas piping, appliance installation, venting, combustion air, testing, and sizing.
• NFPA 58 - Standard for Liquid Petroleum Gas Code, 2014 — exam-room reference supporting LP-Gas piping, containers, regulators, installation, and safety requirements.
• Focused Exam-Room Package: This package contains the five books approved for use during the Nevada C-1 trade examination.
• Open-Book Preparation: Use these same references during study sessions to build code-navigation speed and familiarity before exam day.

Exam Details

The Nevada C-1 Plumbing and Heating Contractor examination contains 120 questions. Candidates are allowed 5 hours to complete the exam and must answer 84 questions correctly to pass.

The examination includes the following subject areas:

• Boilers: 4 questions
• Gas Systems: 8 questions
• Cleanouts: 4 questions
• Fixtures and Equipment: 4 questions
• Hydronics: 3 questions
• Water Heaters/Venting: 6 questions
• Piping, Valves, and Controls: 3 questions
• Sheet Metal: 3 questions
• Water Supply: 8 questions
• Hangers and Supports: 5 questions
• Drain, Waste, and Vents: 10 questions
• Backflow: 4 questions
• Traps and Interceptors: 8 questions
• Isometric Analysis/Plumbing Mathematics: 8 questions
• Safety: 5 questions
• Joints and Connections: 4 questions
• Solar: 4 questions
• General Plumbing Requirements: 7 questions
• Fire Sprinklers: 5 questions
• Storm Drainage: 5 questions
• Industrial Piping: 3 questions
• Breathing Systems for Firefighters: 3 questions
• Chilled Water Piping: 6 questions

Drain, Waste, and Vents is the largest single category with 10 questions. Gas Systems, Water Supply, Traps and Interceptors, and Isometric Analysis/Plumbing Mathematics each account for 8 questions. General Plumbing Requirements contributes another 7 questions.

The broad distribution of questions means candidates should avoid focusing on only one code. Strong preparation requires familiarity with plumbing, mechanical, gas, LP-Gas, and fire sprinkler references.

Open Book Test

The Nevada C-1 Plumbing and Heating Contractor examination is an open-book test.

The books included in this package and allowed into the examination are:

• Uniform Plumbing Code, 2018
• Uniform Mechanical Code, 2018
• NFPA 13: Installation of Sprinkler Systems, 2019
• NFPA 54 - Standard for National Fuel Gas Code, 2012
• NFPA 58 - Standard for Liquid Petroleum Gas Code, 2014

Open-book testing does not eliminate the need for preparation. With 120 questions in five hours, candidates have an average of two and a half minutes per question. Searching multiple books without a clear idea of where to look can quickly consume valuable time.

A practical strategy is to identify the subject first and then select the appropriate reference. Plumbing questions often lead to the Uniform Plumbing Code. Mechanical, heating, hydronic, and related questions may lead to the Uniform Mechanical Code. Fire sprinkler questions may require NFPA 13, natural gas questions may require NFPA 54, and LP-Gas questions may require NFPA 58.

Candidates should practice code navigation before exam day. Use the table of contents, index, chapter structure, definitions, and tables repeatedly until the organization of each reference becomes familiar.

Licensing Steps

1. Confirm the C-1 classification. Make sure Plumbing and Heating Contracting matches the work the business intends to perform.
2. Identify the qualifying individual. The contractor application must identify the person responsible for meeting the applicable trade qualification requirements.
3. Document qualifying experience. Prepare the work-history information required for the classification.
4. Submit the Nevada contractor license application. Complete the applicable application and supporting documentation.
5. Receive examination eligibility. After the qualification information is reviewed, the qualifying individual can proceed with the required examinations.
6. Prepare for the C-1 trade examination. Study plumbing, mechanical systems, gas, fire sprinklers, hydronics, chilled-water piping, industrial piping, calculations, and related subjects.
7. Practice with the approved references. Use the UPC, UMC, NFPA 13, NFPA 54, and NFPA 58 regularly during preparation.
8. Prepare for Nevada Business and Law. Contractor applicants must satisfy the applicable business and law requirement unless an authorized waiver applies.
9. Complete the required examinations. Take the applicable trade and business examinations.
10. Complete remaining licensing requirements. Finish the additional requirements associated with contractor license issuance.

State Requirements

Nevada's C-1 Plumbing and Heating Contracting classification is broad and covers work across multiple plumbing and mechanical specialties.

The scope includes plumbing systems that provide safe water and sanitary drainage, waste, and vent systems. It also includes roof drainage, gas supply systems, water-heating systems, hydronic heating, and related piping work within the classification.

The C-1 scope also includes boilers and related piping, fire sprinkler systems, insulation of pipes and ducts, sheet metal work, heating and cooling systems, gas pipes and vents, chilled-water piping, industrial piping, and firefighter breathing-air systems.

This broad scope is reflected in the examination. Candidates may encounter questions involving plumbing code, mechanical systems, fire protection, gas systems, hydronics, piping, calculations, and system components.

The C-1 trade exam is only one part of the Nevada contractor licensing process. Applicants must also complete the applicable qualification, application, business and law, and other licensing requirements before a contractor license is issued.

Reference Books

• Uniform Plumbing Code, 2018
  This exam-room reference supports preparation involving water supply, drainage, waste and vent systems, fixtures, cleanouts, backflow protection, traps and interceptors, storm drainage, joints, and general plumbing requirements.
• Uniform Mechanical Code, 2018
  This exam-room reference supports preparation involving mechanical systems, heating, hydronics, equipment, piping, venting, air distribution, and related mechanical code requirements.
• NFPA 13: Installation of Sprinkler Systems, 2019
  This exam-room reference supports preparation involving fire sprinkler systems, piping, components, installation requirements, system layout concepts, and related fire protection provisions.
• NFPA 54 - Standard for National Fuel Gas Code, 2012
  This exam-room reference supports preparation involving natural gas piping, sizing, regulators, appliance connections, venting, combustion air, testing, and other fuel-gas system requirements.
• NFPA 58 - Standard for Liquid Petroleum Gas Code, 2014
  This exam-room reference supports preparation involving LP-Gas containers, regulators, piping, fittings, installation, system protection, and related safety requirements.

Exam Room Approved Books

• Uniform Plumbing Code, 2018
  Approved for use during the Nevada C-1 Plumbing and Heating Contractor examination for applicable plumbing requirements.
• Uniform Mechanical Code, 2018
  Approved for use during the examination for applicable mechanical, heating, hydronic, equipment, and related requirements.
• NFPA 13: Installation of Sprinkler Systems, 2019
  Approved for use during the examination for fire sprinkler system questions and related installation requirements.
• NFPA 54 - Standard for National Fuel Gas Code, 2012
  Approved for use during the examination for natural gas and fuel-gas piping, sizing, venting, appliance, and testing requirements.
• NFPA 58 - Standard for Liquid Petroleum Gas Code, 2014
  Approved for use during the examination for LP-Gas piping, containers, regulators, installation, and safety requirements.

Test Information and Study Materials

A strong Nevada C-1 study plan should organize the exam into systems and connect each system with its most relevant reference.

Drain, Waste, and Vent Systems should receive substantial attention because this is the largest individual category. Candidates should review drainage sizing, slope, vents, fixture units, cleanouts, traps, interceptors, and sanitary plumbing requirements using the Uniform Plumbing Code.

Water Supply should include sizing, pressure, materials, valves, distribution, backflow protection, supports, and system protection. Practice using UPC tables and locating applicable requirements quickly.

Gas Systems should be studied with NFPA 54 and NFPA 58 nearby. Candidates should understand the difference between natural gas and LP-Gas systems and know which code applies to each.

Fire Sprinklers should be reviewed with NFPA 13. Candidates should become familiar with sprinkler system components, piping, installation concepts, and the organization of the standard.

Hydronics, Boilers, and Chilled Water Piping should be studied with the Uniform Mechanical Code. Review piping systems, valves, controls, pumps, equipment, supports, heat transfer, and system operation.

Water Heaters and Venting should include installation, combustion air, venting, temperature and pressure protection, fuel-gas considerations, and related code provisions.

Traps and Interceptors account for 8 questions. Candidates should understand trap function, seal protection, interceptor applications, installation requirements, and related UPC provisions.

Plumbing Mathematics and Isometric Analysis also account for 8 questions. Candidates should practice measurements, pipe calculations, elevations, areas, volumes, offsets, and interpretation of piping layouts.

Code books can provide tables and values, but candidates should still be comfortable performing the calculations. Efficient mathematics can save time that can then be used for more difficult reference lookups.

Storm Drainage should include roof drainage, conductors, sizing, drainage pathways, and related code requirements.

General Plumbing Requirements should be reviewed throughout preparation rather than treated as a separate subject. Many general provisions apply across water, waste, vent, fixture, and piping questions.

A useful study method is to create five groups of practice questions: UPC, UMC, NFPA 13, NFPA 54, and NFPA 58. This helps build the habit of identifying the correct reference before beginning a search.

After candidates become comfortable selecting the correct book, practice should become more mixed. Randomly combine plumbing, mechanical, sprinkler, natural gas, and LP-Gas questions so the process more closely resembles the actual examination.

Timed navigation drills can also improve efficiency. Select a topic, choose the reference, locate the section or table, and record how long the lookup takes. Repeat slower subjects until navigation becomes more natural.

The table of contents and index are useful, but candidates should also learn the overall structure of each book. Knowing which chapter contains a major subject can be faster than beginning with the index every time.

Definitions should also be reviewed because technical terminology can affect the meaning of a question. Understanding how a code defines a term can help candidates interpret both the question and the applicable requirement.

Because the exam contains 120 questions, pacing should be part of every practice session. Candidates should avoid spending too much time on a single code search. If a question becomes difficult, moving forward and returning later can help protect overall exam time.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep supports Nevada C-1 Plumbing and Heating Contractor candidates through organized study guidance, trade-focused review, practice-oriented preparation, reference navigation, and confidence-building study structure.

This Books Allowed into Exam Package focuses specifically on the five references candidates may use during the open-book C-1 examination: the Uniform Plumbing Code, Uniform Mechanical Code, NFPA 13, NFPA 54, and NFPA 58.

1 Exam Prep encourages candidates to use these books throughout preparation rather than opening them for the first time on exam day. Repeated practice with chapters, tables, definitions, indexes, and subject organization helps build more efficient navigation.

Trade-focused preparation should connect each reference to the systems it covers. The UPC supports core plumbing, the UMC supports mechanical and heating systems, NFPA 13 supports sprinklers, NFPA 54 supports natural gas, and NFPA 58 supports LP-Gas.

Practice-oriented review can also help candidates identify the reason behind missed questions. Some errors come from trade-knowledge gaps, while others come from choosing the wrong reference, missing a table, or spending too much time searching.

The goal is to help candidates approach the Nevada C-1 Plumbing and Heating Contractor examination with stronger trade knowledge, faster code navigation, better pacing, and a more organized open-book strategy without guaranteeing a passing score or licensing approval.

How many questions are on the Nevada C-1 exam?

The Nevada C-1 Plumbing and Heating Contractor examination contains 120 questions.

How much time is allowed for the C-1 exam?

Candidates are allowed 5 hours to complete the examination.

How many correct answers are required to pass?

Candidates must answer 84 questions correctly to pass the C-1 trade examination.

Is the Nevada C-1 exam open book?

Yes. The Nevada C-1 Plumbing and Heating Contractor examination is an open-book test.

Which books are allowed into the Nevada C-1 exam?

The exam-room references in this package are the Uniform Plumbing Code 2018, Uniform Mechanical Code 2018, NFPA 13 2019, NFPA 54 2012, and NFPA 58 2014.

Are all five books in this package allowed into the exam?

Yes. All five books included in this package are approved for exam-room use for the Nevada C-1 trade examination.

What does the Uniform Plumbing Code help me study?

The UPC supports water supply, drainage, waste and vents, fixtures, cleanouts, backflow, traps, storm drainage, joints, and general plumbing requirements.

What does the Uniform Mechanical Code help me study?

The UMC supports mechanical systems, heating, hydronics, equipment, piping, venting, chilled-water applications, and related code requirements.

What does NFPA 13 help me study?

NFPA 13 supports fire sprinkler system installation, piping, components, and related requirements tested within the C-1 scope.

What does NFPA 54 help me study?

NFPA 54 supports natural gas piping, sizing, regulators, appliance connections, combustion air, venting, testing, and other fuel-gas requirements.

What does NFPA 58 help me study?

NFPA 58 supports LP-Gas containers, regulators, piping, fittings, installation, system protection, and safety requirements.

Does the C-1 exam include fire sprinkler questions?

Yes. Fire Sprinklers accounts for 5 questions.

Does the exam include plumbing mathematics?

Yes. Isometric Analysis and Plumbing Mathematics accounts for 8 questions.

Does the exam include chilled-water piping?

Yes. Chilled Water Piping accounts for 6 questions.

How should I study with five open-book references?

Practice identifying which code applies to each question before beginning the lookup. Use timed drills and mixed practice questions so you can move efficiently among the UPC, UMC, NFPA 13, NFPA 54, and NFPA 58.

Should I look up every answer during the exam?

No. Build strong trade knowledge first and use the approved books strategically when a specific rule, table, definition, or code section needs to be confirmed.

Does this package guarantee that I will pass the Nevada C-1 exam?

No. This package provides the approved exam-room references and supports organized preparation. Examination results depend on each candidate's experience, knowledge, study, calculations, reference-navigation skills, and performance on test day.