The Louisville Colorado Journeyman Mechanical (ICC - G31-N) Highlighted & Tabbed Book Package is designed for mechanical candidates preparing for the ICC G31 National Standard Journeyman Mechanical exam. This package includes the 2018 International Mechanical Code and the 2018 International Fuel Gas Code in a study-ready format with tabs and highlighting added to support more organized exam preparation.
Mechanical work requires a strong understanding of code requirements, equipment installation, ventilation, duct systems, combustion air, chimneys, vents, fuel gas piping, appliance connections, and general mechanical safety. The ICC G31-N exam measures a candidate’s ability to work with code-based information in a multiple-choice format. Because the exam is open book, preparation should focus on both understanding the material and learning how to navigate the approved references quickly.
This highlighted and tabbed book package helps students approach the exam with a clearer study system. The International Mechanical Code and International Fuel Gas Code are detailed references with definitions, tables, installation requirements, exceptions, and technical provisions. Tabs help candidates move to key sections faster, while highlighting helps draw attention to important code language during study. The goal is to make preparation more organized, practical, and focused.
For mechanical contractors and tradespeople working toward Louisville, Colorado licensing requirements, the ICC G31-N exam is an important testing option. Louisville identifies mechanical contractor testing as requiring passing ICC test results of at least Journeyman Mechanical G31, with G29 also accepted. This package supports the exam-preparation portion of that process by helping candidates study the 2018 mechanical and fuel gas references used for the G31-N exam.
A strong study plan should include repeated use of the books before exam day. Candidates should practice locating definitions, equipment requirements, ventilation provisions, duct system rules, combustion air sections, venting requirements, and fuel gas provisions. The more familiar you are with the structure of the books, the more confidently you can work through exam questions under time limits.
The ICC G31-N National Standard Journeyman Mechanical exam evaluates knowledge used by mechanical journeymen and mechanical contractor candidates. The exam is part of the ICC Contractor/Trades testing program and is used by licensing agencies and local jurisdictions to evaluate mechanical code knowledge for licensing or qualification purposes.
The ICC G31-N exam details include:
The listed content areas for the National Standard Journeyman Mechanical exam include General Requirements, Appliances and Equipment, Exhaust and Ventilation Systems, Duct Systems, Combustion Air, Chimneys and Vents, Fuel Supply Systems, Special Requirements, and Electrical. These categories cover a broad range of mechanical knowledge, so candidates should study both books and practice identifying which reference applies to each question.
General Requirements represent a major part of the exam. This area includes mechanical code provisions, definitions, installation requirements, access, clearances, safety rules, system requirements, and general mechanical principles. Candidates should become comfortable using the 2018 International Mechanical Code to locate general provisions and apply them to exam-style questions.
Appliances and Equipment focuses on mechanical equipment installation, appliance requirements, clearances, operating conditions, safety controls, and related mechanical system rules. Candidates should study the code language carefully because appliance questions may depend on specific requirements, exceptions, or manufacturer-related provisions referenced by the code.
Exhaust and Ventilation Systems include air movement, exhaust requirements, ventilation provisions, ducted systems, environmental air, makeup air, and mechanical ventilation concepts. These topics are important for safe indoor air quality and proper system performance.
Duct Systems include duct construction, installation, support, materials, plenums, openings, dampers, and related air distribution rules. Candidates should understand how duct requirements are organized in the IMC and should practice locating tables and section language.
Combustion Air is an important safety topic. Candidates should understand where the fuel gas code addresses combustion air, how appliance locations affect requirements, and how openings, volume, and air sources may be evaluated.
Chimneys and Vents involve venting systems, vent connectors, draft, appliance venting, termination rules, materials, sizing concepts, and installation provisions. These questions may require careful reading of both code language and tables.
Fuel Supply Systems involve fuel gas piping, pressure, sizing concepts, materials, valves, connections, shutoff requirements, and related gas system safety rules. Candidates should practice locating the correct chapter or table in the 2018 International Fuel Gas Code.
Special Requirements and Electrical may represent smaller portions of the exam, but they should still be reviewed. A balanced study plan helps reduce weak spots and supports better performance across the full exam outline.
The ICC G31-N National Standard Journeyman Mechanical exam is an open book test. Candidates are allowed to use approved references during the exam, and the test includes 50 multiple-choice questions with a 3-hour time limit. Because the exam is timed, candidates need to know how to locate information efficiently rather than relying on slow searching during the test.
Open book testing does not remove the need to study. Many questions require candidates to understand which code applies, where the answer is likely located, and how to read the surrounding language. A candidate who has practiced using the references will usually have a stronger exam-day strategy than a candidate who simply brings the books without knowing how they are organized.
This highlighted and tabbed package supports open book preparation by helping candidates move through the references more efficiently. Tabs can help you locate major chapters and sections faster. Highlighting can help draw attention to important code language during review. These tools are most effective when used repeatedly during study before the exam.
Because the G31-N exam uses mechanical and fuel gas references, candidates should practice deciding which book applies to each type of question. General mechanical systems, ventilation, exhaust, equipment, and duct questions will commonly lead to the 2018 International Mechanical Code. Fuel gas piping, combustion air, gas appliances, and venting topics may lead to the 2018 International Fuel Gas Code. Some topics may overlap, so candidates should become comfortable moving between both books.
A good open book strategy is to read the question carefully, identify the subject, select the most likely reference, and then use the tabs to move to the appropriate section. When using a table, code section, or definition, read the heading, notes, exceptions, and surrounding language before choosing an answer. Many code questions depend on context, and the correct answer may require more than one sentence of code language.
Louisville, Colorado handles contractor licensing locally through the city. Mechanical contractors and mechanical tradespeople preparing to work in Louisville should follow the city’s contractor licensing process and confirm the correct license type before performing work that requires licensing or permits.
A practical preparation path for this product includes:
Colorado contractor licensing requirements can vary by trade and jurisdiction. Many contractor license classifications, including local mechanical contractor licensing, are handled by the city or county where work is performed. Contractors working in Louisville should follow Louisville’s local licensing and permitting requirements before beginning regulated mechanical work.
Louisville requires mechanical contractors to provide passing ICC testing results of at least Journeyman Mechanical G31, with G29 also accepted. This means candidates preparing for the G31-N exam should focus on the accepted ICC exam, the required references, and the city’s licensing documentation process.
Passing the ICC G31-N exam does not automatically issue a Louisville contractor license. The exam result may satisfy the testing portion of the licensing process, but applicants must still complete the city’s local licensing requirements and provide required documentation. Mechanical contractors should also stay current with permit rules, inspection requirements, code adoption, and renewal requirements for work performed in Louisville.
Because requirements can differ between Colorado jurisdictions, a contractor or journeyman who meets one city’s requirements may still need to apply separately in another location. Before bidding, permitting, or starting mechanical work, candidates should confirm the accepted exam, license classification, insurance requirements, documentation requirements, and permit obligations for the project location.
Please allow up to 15 business days for tabbed and highlighted book package orders. Plan your study schedule accordingly so you have your materials in hand before scheduling your exam date.
This highlighted and tabbed book package is built to support preparation for the ICC G31-N National Standard Journeyman Mechanical exam. The package gives candidates the two provided 2018 references in an organized format that supports code navigation and structured review.
Begin by learning the structure of the 2018 International Mechanical Code. Review the table of contents, chapter layout, definitions, general requirements, equipment provisions, ventilation sections, exhaust system requirements, duct system rules, chimneys, vents, and mechanical system requirements. Candidates should understand where major mechanical topics are located before beginning timed practice.
Next, study the 2018 International Fuel Gas Code. Focus on definitions, combustion air, fuel gas piping, pipe sizing concepts, valves, appliance connections, venting systems, gas appliances, and fuel supply requirements. Fuel gas questions often require careful use of tables, notes, installation requirements, and safety provisions.
General requirements should receive significant attention because they represent a major part of the exam. These questions may test access, installation standards, equipment support, clearances, permits, inspections, materials, and code terms. Candidates should practice reading code language carefully and connecting the question to the correct chapter or section.
Appliances and equipment should also be reviewed in detail. Mechanical candidates should understand how appliances are installed, supported, vented, connected, and maintained according to the applicable code provisions. Questions in this area may require candidates to know where the IMC and IFGC address appliance requirements.
Ventilation and exhaust systems are essential mechanical topics. Candidates should study requirements for exhaust ducts, environmental air systems, mechanical ventilation, intake openings, discharge locations, makeup air, and related system provisions. Understanding the difference between types of air movement and system functions can help candidates answer questions more accurately.
Duct system study should include materials, installation, supports, plenums, openings, dampers, insulation, and related requirements. Duct questions may require candidates to locate specific tables, definitions, or construction rules in the International Mechanical Code.
Combustion air, chimneys, and vents should be studied together because they are closely connected to safe fuel-burning appliance operation. Candidates should understand how air supply, venting, draft, termination, appliance location, and fuel gas requirements work together. These topics require careful reading and repeated book navigation practice.
Use the highlighted sections as study anchors, but do not rely only on highlighted language. Read the surrounding section, definitions, exceptions, footnotes, and table notes. Many exam questions depend on context, and the correct answer may require understanding more than one code provision.
Since the G31-N exam is open book, timed practice is important. The exam includes 50 questions in 3 hours, which gives candidates an average of just over 3 minutes per question. Some questions may be answered quickly, while others may require a code lookup. Practicing with the highlighted and tabbed books can help candidates build a steady pace and reduce time spent searching.
1 Exam Prep helps mechanical exam candidates prepare with organized materials designed around exam-focused study. For the Louisville Colorado Journeyman Mechanical (ICC - G31-N) exam, this highlighted and tabbed book package supports candidates who need to study the 2018 International Mechanical Code and the 2018 International Fuel Gas Code.
Large code books can be difficult to use without a clear system. 1 Exam Prep helps make the process more manageable by preparing the books with tabs and highlighting. This supports faster navigation, more focused review, and a cleaner study routine for candidates preparing for an open book mechanical exam.
Many mechanical candidates have hands-on field experience, but the ICC exam requires answers in a code-based format. 1 Exam Prep helps bridge that gap by supporting reference navigation, trade-focused review, and practice-oriented preparation. Candidates can use the prepared books to connect field knowledge with the code language used on the exam.
This package also helps build confidence through repetition. When candidates study with organized references, they can become more comfortable locating information, reading code language, and applying requirements under timed conditions. That familiarity can help reduce stress and support a more structured approach to exam day.
1 Exam Prep does not guarantee passing, licensing approval, or exam outcomes. It provides organized study support, prepared reference materials, and a practical structure to help candidates prepare more effectively for the ICC G31-N National Standard Journeyman Mechanical exam and the Louisville mechanical licensing process.
This package includes the 2018 International Mechanical Code and the 2018 International Fuel Gas Code in highlighted and tabbed format.
Yes. The ICC G31-N National Standard Journeyman Mechanical exam is an open book test.
The ICC G31-N exam includes 50 multiple-choice questions.
The exam time limit is 3 hours.
The exam covers general requirements, appliances and equipment, exhaust and ventilation systems, duct systems, combustion air, chimneys and vents, fuel supply systems, special requirements, and electrical topics.
Louisville identifies mechanical contractor testing as requiring passing ICC testing results of a minimum of Journeyman Mechanical G31, with G29 also accepted.
No. Passing the ICC exam may satisfy the testing portion of the licensing process, but candidates must still complete Louisville’s local licensing requirements and provide required documentation.
The 2018 International Fuel Gas Code is included because the G31-N exam covers fuel gas topics such as combustion air, fuel supply systems, appliances, piping, and venting requirements.
Tabs help candidates move through the IMC and IFGC more efficiently during study and open book practice. Faster navigation is important because the exam is timed.
Highlighting helps draw attention to important code language and study areas. It supports focused review and helps candidates become more familiar with the required references.
Please allow up to 15 business days for tabbed and highlighted book package orders. Plan your study schedule accordingly so you have your materials in hand before scheduling your exam date.
This package is designed for candidates preparing for the ICC G31-N National Standard Journeyman Mechanical exam, especially mechanical candidates preparing for Louisville, Colorado licensing requirements.