Nevada Industrial Piping Contractor (A-20) Exam Book Package

Prepare for the Nevada Industrial Piping Contractor (A-20) examination with a focused book package designed around the technical knowledge used in industrial piping, excavation, hydronic systems, pipefitting mathematics, mechanical code requirements, and construction safety. This package combines the Uniform Mechanical Code, 2018 with supplemental study references that help candidates build practical knowledge across the major subjects associated with industrial piping work.

The Nevada A-20 Industrial Piping classification covers the fabrication and installation of piping used to transmit steam, gases, chemicals, and other substances required for industrial manufacturing or commercial operations. The classification also includes related excavation, trenching, and backfilling. Candidates preparing for this license should therefore expect to study more than pipe installation alone. Preparation should include mechanical-code navigation, piping systems, hydronic heating concepts, calculations, excavation practices, and construction safety.

The Uniform Mechanical Code, 2018 is the exam-room reference included in this package. The remaining books—Pipe and Excavation Contracting, Modern Hydronic Heating for Residential and Light Commercial Buildings, John Siegenthaler, P.E., 2022, Mathematics for Plumbers and Pipefitters, 8th edition, and Code of Federal Regulations - 29 CFR Part 1926 (OSHA)—are supplemental study references and are not allowed inside the examination center.

This distinction should guide the way candidates prepare. The Uniform Mechanical Code should be used repeatedly for reference-navigation practice because it can be consulted during the examination. The other books should be studied for comprehension, calculations, system knowledge, and recall because candidates will need to apply those concepts without having those references available during testing.

Industrial piping work can involve demanding field conditions and technical requirements. Candidates benefit from understanding how piping systems are planned, installed, supported, tested, protected, and coordinated with excavation and other construction activities. A well-rounded study plan should combine code knowledge with practical piping experience and regular problem-solving practice.

What You Get

• Uniform Mechanical Code, 2018 — included as the exam-room reference for Nevada A-20 Industrial Piping preparation.
• Pipe and Excavation Contracting — supplemental study reference covering excavation, trenching, pipe installation, backfill, equipment, and related field practices. Not allowed inside the exam.
• Modern Hydronic Heating for Residential and Light Commercial Buildings, John Siegenthaler, P.E., 2022 — supplemental study reference for hydronic piping systems, circulation, system components, and heating concepts. Not allowed inside the exam.
• Mathematics for Plumbers and Pipefitters, 8th edition — supplemental study reference for trade mathematics, measurements, piping calculations, and problem solving. Not allowed inside the exam.
• Code of Federal Regulations - 29 CFR Part 1926 (OSHA) — supplemental construction safety reference covering excavation, equipment, fall protection, personal protective equipment, and other jobsite requirements. Not allowed inside the exam.

Exam Details

The Nevada Industrial Piping Contractor (A-20) trade examination evaluates knowledge relevant to industrial piping work and the construction activities that support piping installations. Candidates should prepare for both technical code questions and practical trade questions.

Industrial piping preparation should include subjects such as piping materials, fittings, valves, system components, pipe supports, installation methods, system operation, mechanical requirements, excavation, trenching, backfilling, mathematics, and jobsite safety.

The Uniform Mechanical Code, 2018 should receive regular attention because it is the exam-room reference included with this package. Candidates should become familiar with its organization and practice locating requirements involving piping systems, equipment, ventilation, combustion-related provisions where applicable, installation requirements, clearances, and other mechanical topics.

Pipe and Excavation Contracting supports the field-construction side of preparation. Industrial piping projects can require trenches, underground pipe, bedding, alignment, backfill, compaction, and safe excavation practices. These subjects are closely connected to the A-20 scope.

Modern Hydronic Heating for Residential and Light Commercial Buildings helps reinforce knowledge of closed-loop piping systems, circulation, system design concepts, pumps, valves, controls, heat transfer, and related hydronic principles that can strengthen overall piping-system understanding.

Mathematics for Plumbers and Pipefitters supports the calculation skills needed in piping work. Candidates should be comfortable with measurements, fractions, decimals, basic geometry, pipe-related calculations, elevations, offsets, and other trade mathematics.

OSHA 29 CFR Part 1926 supports preparation for safety topics involving trenches, excavation, ladders, personal protective equipment, material handling, tools, equipment, and other hazards commonly found on industrial construction projects.

Open Book Test

The Nevada Industrial Piping Contractor (A-20) examination is an open-book test with a specific approved reference.

The exam-room reference included in this package is:

• Uniform Mechanical Code, 2018

The following books are included for study but are not allowed inside the examination center:

• Pipe and Excavation Contracting
• Modern Hydronic Heating for Residential and Light Commercial Buildings, John Siegenthaler, P.E., 2022
• Mathematics for Plumbers and Pipefitters, 8th edition
• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)

Candidates should practice using the Uniform Mechanical Code before test day rather than relying on unfamiliar searches during the examination. Learn how the table of contents, index, chapter structure, definitions, tables, and section headings work together.

A useful approach is to begin with the main subject of a practice question. If the question concerns mechanical piping requirements, identify the likely chapter or indexed term before opening the code. If it involves an installation detail, support requirement, equipment connection, or another technical rule, use the index and chapter headings to narrow the search.

Open-book testing does not eliminate the need for trade knowledge. Many industrial piping questions require candidates to understand what is happening in the system before a reference lookup becomes useful. Strong preparation combines technical understanding with efficient code navigation.

Licensing Steps

The Nevada A-20 Industrial Piping trade examination is one part of the contractor licensing process. Applicants must satisfy the applicable licensing requirements in addition to preparing for the trade test.

1. Confirm the A-20 Industrial Piping classification. Make sure the work the business intends to perform falls within Nevada's Industrial Piping scope.
2. Identify the qualifying individual. The contractor license application must designate the person responsible for providing the applicable trade qualification.
3. Prepare qualifying experience documentation. Organize applicable work history demonstrating experience related to industrial piping, piping systems, excavation, trenching, and associated construction activities.
4. Complete the Nevada contractor license application. Provide the required business, qualifying individual, experience, financial, and supporting information.
5. Submit the application for review. Examination eligibility is established after the contractor application and qualifying experience are reviewed.
6. Receive examination eligibility. The qualifying individual can schedule the required examinations after receiving authorization.
7. Prepare for the Industrial Piping trade examination. Study mechanical code requirements, piping systems, excavation, hydronic concepts, mathematics, and construction safety.
8. Prepare for Business and Law. Nevada contractor applicants are also subject to the applicable Business and Law examination requirement unless a waiver applies.
9. Complete applicable examinations. Satisfy the examination requirements associated with the contractor license application.
10. Complete remaining licensing requirements. Finish the other applicable requirements before the contractor license is issued.

State Requirements

Nevada classifies A-20 Industrial Piping under the General Engineering contractor classifications. The scope covers the fabrication and installation of pipes for the transmission of steam, gases, chemicals, and other substances required for industrial manufacturing or commercial operations.

The classification also includes related excavation, trenching, and backfilling. This is an important part of the scope because many industrial piping systems are installed underground or require substantial site preparation before piping can be placed.

Candidates should therefore prepare for a combination of piping and civil construction knowledge. Understanding piping materials and system components is important, but so is knowledge of trenches, excavation procedures, bedding, backfill, equipment, and construction safety.

The qualifying individual must establish the applicable experience required for the requested contractor classification as part of the Nevada licensing process. The state licensing process also involves requirements beyond the trade exam, including application review and other applicable business and licensing requirements.

Passing the A-20 examination is an important licensing step, but it does not independently create a Nevada contractor license. Applicants must complete all applicable requirements before the license can be issued.

Reference Books

• Uniform Mechanical Code, 2018
  This mechanical-code reference supports preparation involving piping systems, mechanical equipment, installation requirements, system components, clearances, ventilation, and related mechanical provisions. It is the exam-room reference included with this Nevada A-20 package.
• Pipe and Excavation Contracting
  This study reference supports preparation involving pipe installation, trenching, excavation, bedding, backfill, equipment, site preparation, and related field construction methods. It is particularly useful because excavation, trenching, and backfilling are included within the A-20 Industrial Piping scope. This book is not allowed inside the examination center.
• Modern Hydronic Heating for Residential and Light Commercial Buildings, John Siegenthaler, P.E., 2022
  This study reference provides detailed information on hydronic systems, circulating water, piping arrangements, pumps, valves, controls, heat transfer, system components, and related heating concepts. It supports broader piping-system knowledge but is not allowed inside the examination center.
• Mathematics for Plumbers and Pipefitters, 8th edition
  This trade mathematics reference supports preparation involving fractions, decimals, measurements, geometry, pipefitting calculations, elevations, offsets, and other mathematical skills used in piping work. It is not allowed inside the examination center.
• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  This construction safety reference supports study involving excavation, trenching, ladders, fall protection, personal protective equipment, tools, equipment, material handling, and other jobsite safety requirements. It is not allowed inside the examination center.

Exam Room Approved Books

• Uniform Mechanical Code, 2018
  This is the approved exam-room reference included in the Nevada Industrial Piping Contractor (A-20) Exam Book Package. Candidates should use it throughout preparation for mechanical-code navigation practice.

Pipe and Excavation Contracting, Modern Hydronic Heating for Residential and Light Commercial Buildings, Mathematics for Plumbers and Pipefitters, and Code of Federal Regulations - 29 CFR Part 1926 (OSHA) are study-only references and are not allowed inside the examination center.

Test Information and Study Materials

A strong Nevada A-20 preparation plan should combine mechanical-code navigation with piping fundamentals, excavation knowledge, mathematical problem solving, system understanding, and construction safety.

Mechanical Code preparation should center on the Uniform Mechanical Code, 2018. Candidates should become comfortable locating requirements rather than simply reading the code from beginning to end. Practice with the index, chapter headings, definitions, tables, and cross-references.

Piping Systems should include materials, fittings, valves, supports, connections, system components, installation practices, testing concepts, and how piping systems are used to move steam, gases, chemicals, and other substances in commercial and industrial settings.

Excavation and Trenching deserve dedicated preparation because those activities are specifically included within the A-20 classification. Study trench layout, bedding, pipe placement, backfill, compaction, equipment, underground conditions, and safe excavation methods.

Hydronic Systems provide useful preparation for understanding circulating fluid systems. Review pumps, flow, piping arrangements, valves, controls, heat transfer, expansion, and system components. The goal is not simply to memorize terminology but to understand how a piping system functions as a complete system.

Trade Mathematics should be practiced regularly. Pipefitters need to work accurately with fractions, decimals, lengths, elevations, angles, offsets, areas, volumes, and related calculations. Candidates should solve problems without depending on the mathematics book during testing because that reference is not allowed inside the examination center.

Safety should include OSHA concepts associated with industrial construction. Excavation and trenching are especially important because piping work frequently requires below-grade installation. Candidates should also review personal protective equipment, ladders, tools, equipment, material handling, and other common hazards.

Study-only references should be used with active recall. Read a section, close the book, and explain the concept or solve a related problem without looking at the reference. Then return to the book to correct mistakes or reinforce weak areas.

Mathematics practice should follow the same approach. Work calculations repeatedly until the steps become familiar. Candidates who must repeatedly consult a formula explanation during study may have difficulty applying the concept efficiently during an exam where the book is unavailable.

The Uniform Mechanical Code should receive a different type of preparation because it can be used during testing. Create practice questions that require code lookups and time how long it takes to locate the relevant provision. If a particular type of search takes too long, review that section and repeat the lookup later.

When using the code, candidates should not stop at the first sentence containing the correct keyword. Read enough surrounding material to determine whether definitions, exceptions, tables, conditions, or referenced sections affect the requirement.

Industrial piping candidates should also practice identifying the nature of the system before searching. A piping question may involve installation, equipment connection, materials, support, system operation, or another technical issue. Recognizing the category helps narrow the search.

A balanced study schedule might divide preparation into mechanical code, piping systems, excavation, mathematics, hydronic concepts, and safety. Rotating through these subjects can help candidates maintain broad knowledge without neglecting a weaker area.

Practice questions can then be used as a diagnostic tool. If excavation questions are consistently difficult, return to Pipe and Excavation Contracting and OSHA. If calculation questions are slow, dedicate additional sessions to Mathematics for Plumbers and Pipefitters. If code searches are taking too long, increase timed navigation exercises with the Uniform Mechanical Code.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep supports Nevada Industrial Piping Contractor candidates through organized study guidance, trade-focused review, practice-oriented preparation, reference navigation, and structured preparation across the major technical areas associated with the A-20 classification.

This Exam Book Package brings together the Uniform Mechanical Code with supplemental references covering pipe installation, excavation, hydronic systems, mathematics, and OSHA construction safety. The combination helps candidates prepare for both code-based and knowledge-based questions.

The Uniform Mechanical Code can be used throughout preparation to develop stronger reference-navigation habits. Repeated practice helps candidates become familiar with how mechanical requirements are organized and where important piping and system provisions can be located.

The supplemental books reinforce the knowledge candidates need when a reference is unavailable. Pipe and Excavation Contracting supports field installation and trenching concepts, Modern Hydronic Heating strengthens system understanding, Mathematics for Plumbers and Pipefitters supports calculation skills, and OSHA helps reinforce safe construction practices.

1 Exam Prep encourages candidates to use practice questions to guide their study. Instead of reviewing every subject equally, candidates can identify weaker areas and return to the appropriate reference for more focused preparation.

Reference navigation, trade knowledge, calculations, and active recall work together. A candidate who understands the piping concept can identify the right technical issue more quickly, while a candidate familiar with the mechanical code can confirm detailed requirements without unnecessary searching.

The goal is to help candidates approach the Nevada Industrial Piping Contractor examination with better organized knowledge, stronger familiarity with the approved exam-room reference, and a practical study structure for the piping, excavation, mathematics, and safety subjects associated with the trade.

What books are included in the Nevada A-20 Industrial Piping Exam Book Package?

The package includes the Uniform Mechanical Code, 2018; Pipe and Excavation Contracting; Modern Hydronic Heating for Residential and Light Commercial Buildings, John Siegenthaler, P.E., 2022; Mathematics for Plumbers and Pipefitters, 8th edition; and Code of Federal Regulations - 29 CFR Part 1926 (OSHA).

Which book is allowed inside the Nevada A-20 examination?

The Uniform Mechanical Code, 2018 is the exam-room reference included with this package.

Are the other books allowed inside the examination?

No. Pipe and Excavation Contracting, Modern Hydronic Heating, Mathematics for Plumbers and Pipefitters, and OSHA 29 CFR Part 1926 are supplemental study references and are not allowed inside the examination center.

Is the Nevada A-20 Industrial Piping exam open book?

Yes. The trade examination is open book with the approved Uniform Mechanical Code, 2018 reference.

What work is covered by the Nevada A-20 Industrial Piping classification?

The classification covers fabrication and installation of piping used to transmit steam, gases, chemicals, and other substances needed for industrial manufacturing or commercial operations, along with related excavation, trenching, and backfilling.

Why is Pipe and Excavation Contracting included?

Excavation, trenching, and backfilling are part of the A-20 scope. This reference supports preparation for underground pipe installation, trench work, bedding, backfill, equipment, and related field practices.

Why is Modern Hydronic Heating included?

The book strengthens understanding of circulating piping systems, pumps, valves, controls, heat transfer, and hydronic system concepts that support broader piping knowledge.

Why is Mathematics for Plumbers and Pipefitters included?

Industrial piping work requires accurate measurements and calculations. The book supports preparation involving trade mathematics, dimensions, geometry, offsets, elevations, and related pipefitting calculations.

Why is OSHA included?

OSHA 29 CFR Part 1926 supports preparation for construction safety topics including excavation, trenching, ladders, personal protective equipment, equipment, tools, and material handling.

How should I study the books that are not allowed into the exam?

Use active recall and practice problems. Review the material, close the book, answer questions or complete calculations without assistance, and then return to the reference to correct weak areas.

How should I prepare with the Uniform Mechanical Code?

Practice timed code lookups involving piping and mechanical-system requirements. Become familiar with the index, chapter organization, definitions, tables, and cross-references before test day.

Does this package guarantee a passing score?

No. The package provides exam and study references to support organized preparation. Examination results depend on each candidate's knowledge, experience, study, and performance.