Arizona Plumbing Residential / Commercial Contractor (CR-37) Highlighted & Tabbed Book Package

The Arizona Plumbing Residential / Commercial Contractor (CR-37) Highlighted & Tabbed Book Package is designed for contractors preparing for the Arizona CR-37 plumbing trade exam with the supplied reference materials organized for open-book exam preparation. This package includes plumbing code, mechanical code, fuel gas code, OSHA safety, fire sprinkler standards, onsite wastewater provisions, pipe trade references, plumbing mathematics, boiler operation, Arizona utility notification information, and hydronic heating material, professionally highlighted and permanently tabbed to support focused study and faster reference navigation.

The Arizona CR-37 Plumbing classification is a residential and commercial contractor classification for plumbing work. Candidates preparing for this exam should be ready to study residential and commercial plumbing systems, water supply, drainage, waste and vent systems, fuel gas piping, mechanical coordination, boilers, hydronic systems, fire sprinkler references, onsite wastewater provisions, pipe materials, fittings, valves, installation methods, calculations, excavation safety, code navigation, and OSHA construction safety.

Plumbing work can vary widely between residential and commercial projects. Residential work may involve homes, additions, remodels, water distribution, fixtures, drainage, venting, gas piping, light hydronic systems, and onsite wastewater considerations. Commercial work may involve larger piping systems, more complex fixture layouts, more detailed code coordination, fire sprinkler references, mechanical equipment, boilers, roof drainage, utility coordination, and active jobsite safety planning. The CR-37 classification requires candidates to prepare for both sides of the trade.

This highlighted and tabbed book package helps turn a large reference list into a practical study system. Highlighting draws attention to important sections, while permanent tabs help candidates move through the books more efficiently. For an open-book contractor exam, owning the books is only the starting point. Candidates also need to understand where major topics are located and how to find information quickly under a time limit.

This package is a strong fit for qualifying party candidates, residential and commercial plumbing contractors, pipefitters, hydronic heating professionals, mechanical construction supervisors, plumbing business owners, and experienced tradespeople preparing for Arizona contractor licensing. It supports plumbing code review, safety awareness, pipe trade study, fuel gas preparation, onsite wastewater study, mechanical system awareness, and open-book reference navigation for the Arizona CR-37 Plumbing Residential / Commercial Contractor classification.

What You Get

• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  Professionally highlighted and tabbed construction safety reference used for OSHA-related exam preparation and jobsite safety review.
• International Fuel Gas Code, 2018
  Professionally highlighted and tabbed fuel gas code reference covering gas piping systems, appliances, combustion air, venting, installation requirements, testing, and fuel gas code navigation.
• International Mechanical Code, 2018
  Professionally highlighted and tabbed mechanical code reference covering mechanical systems, ventilation, equipment installation, combustion air, hydronic concepts, and mechanical system coordination.
• International Plumbing Code, 2018
  Professionally highlighted and tabbed plumbing code reference covering water distribution, sanitary drainage, vents, traps, fixtures, storm drainage, materials, joints, and plumbing system requirements.
• NFPA 13: Installation of Sprinkler Systems, 2019
  Professionally highlighted and tabbed sprinkler system standard covering installation requirements for sprinkler systems, system components, piping, protection criteria, and related fire protection concepts.
• NFPA 13D - Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes, 2019
  Professionally highlighted and tabbed residential sprinkler reference supporting sprinkler system study for one- and two-family dwellings and manufactured homes.
• NFPA 13R - Sprinkler Systems for Residential Occupancies up to and Including Four Stories in Height, 2019
  Professionally highlighted and tabbed sprinkler system reference for residential occupancies up to and including four stories in height.
• On-site Wastewater Treatment Facility Provisions in Unified Water Quality Permit Rule, Arizona Administrative Code Title 18, Chapter 9, 2006
  Professionally highlighted and tabbed Arizona onsite wastewater reference supporting study in onsite wastewater treatment facility provisions, permitting concepts, wastewater system requirements, and Arizona-specific regulatory language.
• Mathematics for Plumbers and Pipefitters, 8th edition
  Professionally highlighted and tabbed math reference supporting plumbing and pipefitting calculations, measurements, conversions, offsets, volumes, slopes, and trade math review.
• IPT’s Pipe Trades Handbook, Robert A. Lee, 2016
  Professionally highlighted and tabbed pipe trades reference covering piping data, fittings, valves, flanges, formulas, symbols, materials, layout, and practical pipe trade information.
• Boiler Operator’s Guide, 5th Edition
  Professionally highlighted and tabbed boiler reference supporting study in boiler operation, components, safety, controls, piping, maintenance, and system awareness.
• Arizona 811 - Arizona Blue Stake Brochure
  Professionally highlighted and tabbed utility notification reference supporting Arizona underground utility awareness, excavation planning, and damage prevention.
• Modern Hydronic Heating for Residential and Light Commercial Buildings, John Siegenthaler, P.E., 2022
  Professionally highlighted and tabbed hydronic heating reference covering hydronic system concepts, piping, circulators, boilers, heat transfer, controls, and residential or light commercial heating applications.
• Highlighted Study Organization
  Important sections are marked to help guide review and support faster lookup during open-book exam practice.
• Permanent Tabs
  Tabs are prepared to support organized study and exam-room reference navigation where the specific reference is allowed by testing rules.

Please allow up to 15 business days for tabbed and highlighted book package orders

Exam Details

The Arizona CR-37 Plumbing trade exam is part of the Arizona Registrar of Contractors examination program. The exam is connected to the residential and commercial plumbing classification and is designed to evaluate a candidate’s knowledge of plumbing systems, plumbing code requirements, fuel gas work, mechanical coordination, fire sprinkler references, onsite wastewater provisions, pipe trade practices, boiler and hydronic awareness, calculations, safety, and installation methods.

The CR-37 exam preparation process should focus on the reference list and the major trade areas connected to plumbing work in both residential and commercial settings. Candidates should study the 2018 International Plumbing Code for water supply, sanitary drainage, vents, traps, fixtures, storm drainage, materials, joints, testing, and system requirements. The 2018 International Fuel Gas Code supports gas piping, appliance installation, combustion air, venting, pressure, testing, and gas system protection. The 2018 International Mechanical Code supports mechanical system coordination and related equipment requirements.

Because the supplied references include NFPA 13, NFPA 13D, and NFPA 13R, candidates should also be prepared to navigate fire sprinkler system material. These references support study in sprinkler system installation, piping, components, protection concepts, residential sprinkler applications, and occupancy-related sprinkler system requirements.

The onsite wastewater reference adds Arizona-specific preparation for candidates who need to understand onsite wastewater treatment facility provisions under the Unified Water Quality Permit Rule. This material supports study in onsite wastewater terminology, regulatory organization, system provisions, permit-related language, and the way onsite wastewater requirements may connect to plumbing work in residential and light commercial settings.

Plumbing calculations are an important part of contractor exam preparation. Candidates should review trade math, fractions, decimals, area, volume, slope, offsets, pipe measurements, pressure, flow-related concepts, and practical conversion work. Mathematics for Plumbers and Pipefitters, 8th edition supports this study area, while IPT’s Pipe Trades Handbook provides pipe trade data, formulas, and field information.

Boiler and hydronic heating preparation should include boiler components, piping arrangements, controls, safety devices, heat transfer, circulators, system layout, and general hydronic concepts. Plumbing contractors working across residential and commercial settings may encounter systems that require coordination with heating, mechanical, and piping work, making these references useful for broader system understanding.

Open Book Test

The Arizona CR-37 Plumbing exam is an open-book test for approved references allowed by the testing provider. Candidates are responsible for bringing their own allowed reference materials to the examination center. Approved references may be highlighted, underlined, annotated, and indexed before the examination session begins.

During the exam, candidates may not write, highlight, underline, or index inside the reference books. Any markings, notes, highlighting, underlining, or indexing must be completed before the exam begins. Candidates should arrive with their allowed books already organized and ready to use.

Reference materials may be tabbed or indexed with permanent tabs only. Permanent tabs are tabs that would tear the page if removed. Temporary removable tabs, including Post-it style tabs or other removable markers, are not allowed and must be removed before the exam begins.

Candidates may use a silent, nonprinting, non-programmable calculator in the examination center. Loose papers and additional attached papers are not allowed with approved references. Downloaded references may be brought into the testing center only when they are properly bound, such as spiral bound or placed in a binder after being hole-punched.

Open book does not mean the exam is simple. Plumbing questions can require quick movement between plumbing code, fuel gas code, mechanical code, sprinkler standards, onsite wastewater provisions, pipe trade references, math references, boiler material, hydronic heating material, Arizona utility information, and OSHA safety rules. Highlighting and tabs help candidates move through the books with purpose instead of searching without a plan.

Licensing Steps

Arizona contractor licensing is handled by the Arizona Registrar of Contractors. A candidate pursuing the CR-37 Plumbing Residential / Commercial Contractor classification should begin by reviewing the classification scope, confirming the applicable examination requirements, and preparing for the required trade examination.

The person who satisfies the examination requirement is commonly the qualifying party for the license. The qualifying party is connected to the contractor license application and is responsible for demonstrating knowledge in the classification. Applicants should follow the Arizona Registrar of Contractors process for current application forms, business information, bonding, financial responsibility items, and any other licensing materials required for the application.

A practical preparation path begins with gathering the references, reviewing the CR-37 classification scope, and building a study schedule around the major subject areas. Candidates should divide study time across plumbing code, fuel gas code, mechanical code, sprinkler standards, onsite wastewater provisions, pipe materials, fittings, valves, piping layout, trade math, boiler systems, hydronic systems, excavation awareness, utility marking, and OSHA safety.

After preparing, candidates schedule and complete the required examination through the testing provider. Passing the trade exam is an important licensing step, but passing the exam does not automatically issue a contractor license. The license application must still be submitted to the Arizona Registrar of Contractors and reviewed according to state licensing requirements.

Candidates should keep the full licensing process in mind while preparing. The exam is one part of the broader path to licensure. Business setup, application documents, bonding, compliance responsibilities, and state review may also be part of the process depending on the applicant and business structure.

State Requirements

The Arizona CR-37 Plumbing classification is the residential/commercial plumbing contractor classification. It is intended for contractors preparing to perform plumbing work across both residential and commercial settings. Contractors who plan to perform plumbing only on commercial projects should review the C-37 classification, while contractors who plan to perform plumbing only on residential projects should review the residential plumbing classification.

Residential and commercial plumbing work may include installation, alteration, and repair of plumbing systems within the classification scope. Candidates should make sure the CR-37 license matches the plumbing work they plan to contract, advertise, supervise, and perform. Residential projects may involve homes, remodels, additions, fixtures, water distribution, drainage, venting, gas piping, hydronic heating, and onsite wastewater considerations. Commercial projects may involve larger piping systems, more complex coordination, roof drainage, gas systems, equipment connections, boilers, sprinkler references, and coordination with mechanical and general building trades.

The CR-37 classification is not a substitute for unrelated specialty licenses outside the plumbing scope. Contractors should understand the boundaries of the license and use appropriately licensed contractors when separate regulated trade work is required. Plumbing contractors should also understand safety responsibilities related to excavation, underground utilities, gas piping, pressure testing, hot work, restricted areas, and active jobsites.

Plumbing contractors must be able to read code language, apply installation requirements, understand pipe materials and joining methods, calculate measurements, coordinate with other systems, and maintain safe work practices. The supplied references support this broad preparation path by combining codes, standards, practical trade books, safety references, Arizona-specific onsite wastewater material, and system-specific study materials.

Reference Books

Please allow up to 15 business days for tabbed and highlighted book package orders.

• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  This construction safety reference supports preparation for OSHA-related questions involving excavation, personal protective equipment, ladders, scaffolds, fall protection, tools, equipment, material handling, pipe work, and safe construction practices.
• International Fuel Gas Code, 2018
  This fuel gas code reference supports study in gas piping systems, appliances, combustion air, venting, sizing concepts, pressure testing, installation clearances, materials, and fuel gas code navigation.
• International Mechanical Code, 2018
  This mechanical code reference supports study in mechanical system coordination, ventilation, equipment installation, combustion air, hydronic-related concepts, and mechanical code navigation.
• International Plumbing Code, 2018
  This plumbing code reference supports study in water distribution, sanitary drainage, vents, traps, fixtures, storm drainage, materials, joints, backflow protection concepts, installation requirements, and plumbing code navigation.
• NFPA 13: Installation of Sprinkler Systems, 2019
  This sprinkler system standard supports study in sprinkler installation requirements, system piping, components, protection criteria, hangers, fittings, water supplies, and fire protection system concepts.
• NFPA 13D - Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes, 2019
  This residential sprinkler reference supports study in sprinkler systems for one- and two-family dwellings and manufactured homes.
• NFPA 13R - Sprinkler Systems for Residential Occupancies up to and Including Four Stories in Height, 2019
  This residential sprinkler occupancy reference supports study in sprinkler systems for residential occupancies up to and including four stories in height.
• On-site Wastewater Treatment Facility Provisions in Unified Water Quality Permit Rule, Arizona Administrative Code Title 18, Chapter 9, 2006
  This Arizona onsite wastewater reference supports study in onsite wastewater treatment facility provisions, permit-related requirements, wastewater system language, and Arizona-specific regulatory concepts.
• Mathematics for Plumbers and Pipefitters, 8th edition
  This trade math reference supports study in measurements, conversions, fractions, decimals, offsets, slopes, area, volume, pressure, and practical plumbing and pipefitting calculations.
• IPT’s Pipe Trades Handbook, Robert A. Lee, 2016
  This pipe trades reference supports study in pipe materials, fittings, valves, flanges, formulas, symbols, piping data, layout information, and field reference tables.
• Boiler Operator’s Guide, 5th Edition
  This boiler reference supports study in boiler operation, components, safety devices, controls, piping, maintenance, combustion, water treatment concepts, and system operation awareness.
• Arizona 811 - Arizona Blue Stake Brochure
  This Arizona utility notification reference supports study in underground utility awareness, excavation planning, damage prevention, and Blue Stake procedures.
• Modern Hydronic Heating for Residential and Light Commercial Buildings, John Siegenthaler, P.E., 2022
  This hydronic heating reference supports study in hydronic system design concepts, piping layouts, boilers, circulators, heat transfer, controls, balancing, and residential or light commercial heating applications.

Exam Room Approved Books

The following books are included in this highlighted and tabbed book package for Arizona CR-37 Plumbing Residential / Commercial Contractor exam preparation:

• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  Construction safety reference for OSHA-related exam questions and jobsite safety topics.
• International Fuel Gas Code, 2018
  Fuel gas code reference for gas piping, appliances, venting, combustion air, installation, testing, and code navigation.
• International Mechanical Code, 2018
  Mechanical code reference for mechanical system coordination, ventilation, equipment, combustion air, and related requirements.
• International Plumbing Code, 2018
  Plumbing code reference for water distribution, sanitary drainage, vents, traps, fixtures, storm drainage, materials, and installation requirements.
• NFPA 13: Installation of Sprinkler Systems, 2019
  Sprinkler system standard for installation requirements, system components, piping, protection criteria, and fire protection concepts.
• NFPA 13D - Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes, 2019
  Residential sprinkler system standard for one- and two-family dwellings and manufactured homes.
• NFPA 13R - Sprinkler Systems for Residential Occupancies up to and Including Four Stories in Height, 2019
  Sprinkler system standard for residential occupancies up to and including four stories in height.
• On-site Wastewater Treatment Facility Provisions in Unified Water Quality Permit Rule, Arizona Administrative Code Title 18, Chapter 9, 2006
  Arizona onsite wastewater reference for wastewater treatment facility provisions and permit-rule language.
• Mathematics for Plumbers and Pipefitters, 8th edition
  Plumbing and pipefitting math reference for measurements, conversions, offsets, slopes, and trade calculations.
• IPT’s Pipe Trades Handbook, Robert A. Lee, 2016
  Pipe trades field reference for piping data, formulas, fittings, valves, symbols, and layout information.
• Boiler Operator’s Guide, 5th Edition
  Boiler reference for boiler operation, controls, safety devices, piping, maintenance, and system awareness.
• Arizona 811 - Arizona Blue Stake Brochure
  Arizona utility notification reference for excavation planning, underground utility awareness, and damage prevention.
• Modern Hydronic Heating for Residential and Light Commercial Buildings, John Siegenthaler, P.E., 2022
  Hydronic heating reference for boilers, circulators, piping, controls, heat transfer, and residential or light commercial hydronic systems.

Approved references may be highlighted, underlined, annotated, and indexed before the examination session. References may not be written in during the exam. Permanent tabs are allowed. Temporary removable tabs are not allowed. Candidates should avoid loose papers, removable notes, or extra attached pages with the references.

Test Information and Study Materials

The Arizona CR-37 exam requires a broad plumbing study plan. Candidates should begin with the classification scope, then connect each major subject area to the books most likely to support that topic. This creates a more efficient study process than reading every reference without direction.

Plumbing code preparation should include fixtures, water distribution, drainage, waste and vent systems, traps, cleanouts, storm drainage, pipe materials, joints, supports, backflow protection concepts, testing, and code navigation. Candidates should practice using the table of contents, index, chapter structure, section headings, and tabs in the International Plumbing Code, 2018.

Fuel gas preparation should include gas piping materials, appliance connections, combustion air, venting, shutoff valves, testing, sizing concepts, and installation requirements. Mechanical code preparation should include mechanical system coordination, equipment installation, combustion air, ventilation, hydronic-related topics, and code navigation.

Sprinkler preparation should include the difference between NFPA 13, NFPA 13D, and NFPA 13R applications, along with basic sprinkler system components, piping, hangers, water supply, protection concepts, and system installation rules. Candidates should practice locating sprinkler topics in the correct NFPA reference.

Onsite wastewater preparation should include Arizona-specific regulatory organization, onsite wastewater terminology, facility provisions, permit-rule language, and how wastewater system requirements may relate to plumbing work. Pipe trade preparation should include fittings, valves, pipe sizes, flanges, materials, joining methods, symbols, offsets, layout, formulas, and practical field data. Math preparation should include slopes, offsets, area, volume, measurements, conversions, and pipefitting calculations.

Safety should be part of every study schedule. Plumbing work can involve excavation, underground utilities, ladders, scaffolds, restricted work areas, pressurized systems, gas piping, hot work, heavy materials, and active jobsites. Candidates should become familiar with OSHA 29 CFR Part 1926 and the Arizona 811 Blue Stake material before exam day.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep helps contractor candidates prepare with organized study tools built around real exam needs. For the Arizona Plumbing Residential / Commercial Contractor (CR-37) exam, this highlighted and tabbed book package gives you the supplied references in a format designed for practical study and open-book navigation.

The highlighting helps draw attention to important sections inside the books. The permanent tabs help candidates move through the references more quickly. Together, they create a study structure that supports review, repetition, and faster lookup during timed practice.

1 Exam Prep’s approach supports trade-focused review, plumbing code navigation, fuel gas review, mechanical code awareness, pipe trade study, calculation practice, sprinkler reference navigation, boiler and hydronic study, onsite wastewater review, OSHA safety awareness, and confidence-building preparation. The goal is to help candidates build a clear routine: review the classification scope, study the references, learn the tab system, practice timed lookup, and enter the exam with a stronger command of the materials.

This package does not replace preparation, but it can make preparation more efficient. Instead of beginning with plain books and creating a system from scratch, candidates receive references that are already highlighted and tabbed. That structure gives each study session a clear starting point and helps reduce the confusion that can come with a large open-book plumbing reference set.

For residential and commercial plumbing contractors, time matters. Organized references can help reduce setup work, support focused study, and make exam practice less stressful. When you understand plumbing topics and know where to look in the books, the open-book format becomes more manageable.

Who is this book package for?

This package is for candidates preparing for the Arizona Plumbing Residential / Commercial Contractor (CR-37) trade exam. It is designed for qualifying party candidates, residential plumbing contractors, commercial plumbing contractors, pipefitters, plumbing supervisors, boiler and hydronic system professionals, and business owners preparing for Arizona contractor licensing.

What work is covered by the CR-37 classification?

The CR-37 classification is for plumbing work across residential and commercial settings. Candidates should review the Arizona classification scope before applying and make sure the license matches the plumbing work they plan to contract, advertise, supervise, and perform.

Is the Arizona CR-37 plumbing exam open book?

Yes. The Arizona CR-37 Plumbing exam is open book for approved references allowed by the testing provider. Candidates may bring allowed references into the testing center when the books comply with rules for highlighting, annotations, indexing, tabs, and loose materials.

Are the books highlighted and tabbed?

Yes. The included books are professionally highlighted and permanently tabbed to support study, reference lookup, and open-book exam preparation.

Can I use temporary tabs in the exam room?

No. Temporary removable tabs, including Post-it style tabs, are not allowed. References may be tabbed or indexed with permanent tabs only.

Which codes are included in this package?

This package includes the International Plumbing Code, 2018, International Fuel Gas Code, 2018, International Mechanical Code, 2018, NFPA 13, 2019, NFPA 13D, 2019, NFPA 13R, 2019, and Arizona onsite wastewater provisions, along with OSHA and trade references.

What topics should I study for the CR-37 exam?

Candidates should study plumbing code, water distribution, drainage, vents, fuel gas piping, mechanical coordination, sprinkler references, onsite wastewater provisions, pipe materials, fittings, valves, trade math, boilers, hydronic heating, excavation awareness, utility marking, and OSHA construction safety.

Is this package for residential or commercial plumbing?

This package is for the Arizona CR-37 Plumbing Residential / Commercial Contractor classification. It is intended for candidates preparing for the dual residential and commercial plumbing scope.

Does this package guarantee that I will pass?

No. This package is a study and reference-navigation tool. Exam results depend on preparation, trade knowledge, study time, test-taking habits, and the candidate’s ability to use the references effectively.