ICC Master Plumber - G24-N - Online Exam Prep

The ICC Master Plumber - G24-N - Online Exam Prep course is designed for candidates preparing for the ICC National Standard Master Plumber exam. This exam focuses on advanced plumbing code knowledge, general regulations, plumbing fixtures, water heaters, water supply and distribution, sanitary drainage, venting, traps, interceptors, separators, storm drainage, and plan reading. For experienced plumbing professionals pursuing a master-level license or local trade qualification, this course provides a structured path for exam preparation.

This online exam prep product helps candidates study the International Plumbing Code, 2018 in a focused and practical way. The International Plumbing Code is a detailed code reference that covers a wide range of plumbing system requirements. The G24-N exam requires candidates to understand the code book, locate information efficiently, and apply plumbing code requirements to exam-style questions under timed conditions.

Master-level plumbing work requires more than basic installation knowledge. Candidates should be able to interpret plumbing system layouts, evaluate fixture requirements, understand water distribution principles, apply sanitary drainage rules, recognize proper venting methods, review storm drainage provisions, and connect jobsite conditions to the correct code section. This course supports that preparation by helping candidates build stronger familiarity with the approved reference.

Many candidates preparing for the G24-N exam already have years of plumbing experience. That experience is valuable, but an ICC exam requires the code-supported answer. A method that is commonly used in the field still needs to match the specific wording, table, definition, exception, or requirement found in the International Plumbing Code. This online course helps candidates prepare for that difference by supporting organized code review and practical exam strategy.

The G24-N exam is an open book exam, but open book testing still requires serious preparation. Candidates who are unfamiliar with the International Plumbing Code can spend too much time searching through the wrong chapter or applying the wrong table. A strong preparation plan includes repeated use of the code book, careful review of definitions, practice with tables, plan-reading review, and timed exam-style practice.

This course is a strong fit for working plumbers, supervisors, contractors, and licensing candidates who need flexible exam preparation. Because the training is online, you can study around service calls, jobsite responsibilities, inspections, crew management, family obligations, and licensing deadlines. The course gives you a practical way to review major exam subjects without attending a live classroom at a fixed time.

Preparation for the G24-N exam should include topic review, repeated reference navigation, careful reading of code language, and time-management practice. Candidates should know how the International Plumbing Code is organized and how to move between definitions, chapters, tables, footnotes, and exceptions. The more familiar the reference becomes during study, the more comfortable candidates can feel when working through the exam.

Exam Details

The ICC G24-N National Standard Master Plumber exam evaluates master-level plumbing knowledge based on the International Plumbing Code, 2018. Candidates should be prepared for questions involving administration, general regulations, plumbing fixtures, water heaters, water supply and distribution, sanitary drainage, vents, traps, interceptors, separators, storm drainage, and plan reading.

The G24-N exam consists of 100 multiple-choice questions and has a 4-hour time limit. Candidates must manage time carefully because many questions may require code lookup, table use, plan interpretation, or comparison between several code sections. A steady pace is important, especially when working through venting, drainage, water distribution, and plan-reading questions.

The reference provided for this product is:

• International Plumbing Code, 2018

The exam requires a passing score of 70%. Major subject areas include administration, general regulations, fixtures, water heaters, water supply and distribution, sanitary drainage, vents, traps, interceptors and separators, storm drainage, and plan reading. Plan reading is a significant part of the exam, so candidates should practice interpreting plumbing layouts, riser diagrams, fixture locations, pipe sizes, drainage paths, vent arrangements, and code-related drawing information.

Using the correct code edition matters. Exam questions are tied to the listed reference, and code wording, section numbers, definitions, tables, footnotes, and exceptions can change between editions. Candidates preparing for this product should study with the International Plumbing Code, 2018.

Open Book Test

The ICC Master Plumber G24-N exam is an open book test. Candidates may use the approved reference during the exam, but they must know how to use the book efficiently. Open book testing rewards candidates who are organized, familiar with the code book, and comfortable locating information under timed conditions.

For this exam, candidates should become comfortable using the International Plumbing Code, 2018. You should know how to use the table of contents, index, chapter organization, definitions, tables, figures, footnotes, notes, and exceptions. Many questions require more than finding a section number. Candidates must read the full requirement and apply it correctly to the situation described in the question.

A strong open book strategy begins with identifying the subject. If the question involves plumbing fixtures, water heaters, water distribution, sanitary drainage, venting, traps, cleanouts, interceptors, separators, storm drainage, or plan reading, locate the chapter or section that applies before searching in detail. Choosing the right part of the code book first can save valuable exam time.

Open book does not mean the answer will be obvious. Many questions turn on a specific condition, fixture type, pipe size, developed length, drainage fixture unit value, venting arrangement, cleanout requirement, storm drainage condition, or exception. Candidates should practice reading the question fully, locating the relevant section, and confirming the answer before moving on.

Because the G24-N exam includes 100 questions, pacing is important. Candidates should avoid spending too much time on one question during the first pass. Mark difficult questions and return to them after answering the questions that can be solved more quickly. This approach helps protect exam time and can reduce pressure during the final portion of the test.

Licensing Steps

The ICC G24-N exam may be used by state, county, city, or local licensing authorities as part of a master plumber licensing process. Licensing requirements are controlled by the jurisdiction where the candidate plans to work. Passing the exam may satisfy a testing requirement in some locations, but it does not automatically create a plumbing license by itself.

A typical licensing path may include identifying the correct license classification, confirming that the G24-N exam is accepted for that license, reviewing application and experience requirements, preparing for the exam, registering through the approved testing process, taking the exam, and submitting required documentation to the licensing authority.

Some jurisdictions may require documented trade experience, journeyman-level experience, supervisor verification, employment records, application approval, insurance, bonding, background checks, continuing education, or additional exams. Plumbing licensing may also involve business registration or contractor licensing requirements depending on the location and scope of work.

This online course focuses on preparation for the ICC Master Plumber G24-N exam. Candidates should confirm that the G24-N exam matches the license classification they are pursuing before registering for the test.

State Requirements

Plumbing licensing requirements vary by state and local jurisdiction. Some agencies use ICC National Standard exams as part of the licensing process, while others may use state-specific exams, board-administered exams, local exams, or additional qualification requirements. The G24-N exam may be accepted in one jurisdiction and not accepted in another.

Candidates should confirm the accepted exam ID, application process, experience requirements, required documentation, passing score rules, renewal requirements, continuing education obligations, and any additional exams required by the licensing authority. This is especially important for candidates who work near state lines, serve multiple municipalities, or operate a plumbing business across different service areas.

Licensing rules may also affect the scope of work allowed under the license. A master plumber credential may have specific rules for supervision, permitting, business ownership, plumbing system installation, inspection responsibilities, and contractor operations. Candidates should understand how the license applies to the work they plan to perform.

The purpose of this course is to help candidates prepare for the ICC G24-N exam. It does not replace the application, experience, documentation, insurance, bonding, or approval process required by any licensing agency.

Reference Books

• International Plumbing Code, 2018
  This code reference establishes requirements for plumbing systems, including administration, definitions, fixtures, water heaters, water supply and distribution, sanitary drainage, vents, traps, interceptors, separators, storm drainage, indirect waste, cleanouts, materials, and plumbing safety provisions. Candidates should study the organization of the book, definitions, tables, figures, notes, exceptions, and chapter layout so they can locate information efficiently during the open book exam.

Exam Room Approved Books

The approved exam reference for this open book exam prep product is:

• International Plumbing Code, 2018

Candidates should bring only approved references in the condition allowed by current testing rules. Before exam day, review testing policies for book condition, tabs, highlighting, handwritten notes, loose papers, inserted pages, and other materials. Even when an exam is open book, testing rules determine what materials may be used during the exam.

Reference preparation should be part of your study routine. Candidates should know where major plumbing chapters are located, how the index is organized, and how to move between definitions, tables, and code sections. Familiarity with the reference can reduce stress and save time during the exam.

Test Information and Study Materials

The G24-N exam requires a strong understanding of plumbing systems and the ability to apply the International Plumbing Code, 2018. Candidates should study the code with attention to how plumbing requirements are organized. Administration and definitions establish the foundation for code compliance, while later chapters address fixtures, water heaters, water distribution, drainage, vents, traps, interceptors, separators, storm drainage, and other plumbing system requirements.

For administration and general regulations, candidates should review code scope, permits, inspections, approvals, materials, installation requirements, maintenance responsibilities, and general compliance language. Definitions are especially important because plumbing code terms can control how a question should be interpreted. Terms related to fixtures, drainage systems, vents, developed length, cleanouts, backflow, indirect waste, traps, and storm drainage can affect the correct answer.

For plumbing fixtures, candidates should review fixture requirements, fixture connections, clearances, installation provisions, indirect waste conditions, accessibility-related plumbing provisions when applicable, and related system requirements. Fixture questions may depend on the type of fixture, its location, the connected system, or a specific installation condition.

For water heaters, candidates should review installation requirements, access, safety provisions, relief valves, discharge piping, drainage provisions, and related system connections. Water heater questions may involve specific safety details, installation locations, or required components.

For water supply and distribution, candidates should study pipe sizing concepts, fixture supply requirements, backflow protection, valves, pressure considerations, materials, distribution layout, and system installation. Tables and sizing provisions are important because many water distribution questions require careful code application.

For sanitary drainage, candidates should review drainage fixture units, pipe sizing, slope, cleanouts, horizontal drainage, vertical stacks, branch connections, offsets, and system layout. Drainage questions often require attention to measurements, fixture units, pipe arrangement, and code tables.

For venting, candidates should study vent types, vent sizing, vent connections, vent terminals, wet venting, distance limitations, and special venting arrangements. Venting is a major plumbing exam area because small layout differences can change the requirement that applies.

For traps, interceptors, and separators, candidates should review trap seal requirements, prohibited trap arrangements, cleanout access, grease interceptors, oil separators, indirect waste, and special fixture or system conditions. These topics often require both code definitions and installation rules.

For storm drainage, candidates should review roof drainage, storm system sizing, secondary drainage, conductors, leaders, and related provisions. Storm drainage questions may involve tables, rainfall rates, roof areas, or drainage system layout.

Plan reading is also important for master-level plumbing preparation. Candidates should practice reading plumbing layouts, riser diagrams, pipe sizes, fixture locations, vent arrangements, drainage paths, cleanout locations, storm drainage layouts, and notes. Plan-reading questions may require candidates to interpret the drawing first and then apply the correct code requirement.

Good preparation includes repeated practice with the actual reference. Use the table of contents to understand the book’s structure. Use the index to find terms quickly. Review definitions often. Practice using tables carefully and reading all notes, exceptions, and footnotes. Build the habit of checking the full requirement before selecting an answer.

Timed practice is also important. Since the exam includes 100 questions in 4 hours, candidates should practice moving steadily through questions. Some questions may be answered quickly, while others may require code lookup, table interpretation, or plan-reading review. Practicing under timed conditions helps candidates learn when to keep moving and when to return to a difficult question later.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep helps candidates prepare for the ICC Master Plumber G24-N exam with organized study guidance, plumbing-focused review, practice-oriented preparation, and reference-navigation support. The course is designed to help you approach the International Plumbing Code, 2018 with a clearer study plan.

For many candidates, the most difficult part of preparation is knowing where to focus. The approved reference contains a large amount of technical information, and reading without structure can be overwhelming. 1 Exam Prep helps organize review around major exam areas, including administration, general regulations, fixtures, water heaters, water supply and distribution, sanitary drainage, vents, traps, interceptors, separators, storm drainage, and plan reading.

Because the G24-N exam is open book, the ability to navigate the reference is essential. 1 Exam Prep supports candidates by helping them become more comfortable locating information, recognizing code terms, working with tables, and applying requirements to exam-style questions. This kind of preparation can help reduce confusion and build confidence before test day.

The course also helps candidates connect field experience with code-based testing. A master plumber may understand how plumbing systems are installed and supervised, but the exam requires answers supported by the approved code reference. 1 Exam Prep helps reinforce that connection through structured review and practical exam preparation.

1 Exam Prep does not guarantee passing, licensing approval, state approval, or exam outcomes. Candidates still need to study, practice, register properly, and follow the licensing requirements of their jurisdiction. The value of the course is in giving candidates a more organized path toward exam readiness.

FAQ Section

What is the ICC Master Plumber G24-N exam?

The ICC G24-N exam is a National Standard Master Plumber exam that evaluates plumbing code knowledge, including administration, general regulations, fixtures, water heaters, water supply and distribution, sanitary drainage, vents, traps, interceptors, separators, storm drainage, and plan reading.

Is the G24-N exam open book?

Yes. The G24-N exam is an open book exam. Candidates should prepare by learning how to use the International Plumbing Code, 2018 quickly and accurately during the timed test.

How many questions are on the G24-N exam?

The G24-N exam consists of 100 multiple-choice questions.

How long is the G24-N exam?

The G24-N exam has a 4-hour time limit. Candidates should practice time management so they can answer questions efficiently while using the approved reference.

What score is required to pass the G24-N exam?

The passing score for the G24-N exam is 70%.

What book is used for this exam prep course?

The reference listed for this course is the International Plumbing Code, 2018.

Does this online exam prep include the code book?

This product title identifies the item as online exam prep. Books should only be considered included when the product purchase option specifically states that books are included.

What topics should I study for the G24-N exam?

Important study topics include administration, general regulations, fixtures, water heaters, water supply and distribution, sanitary drainage, vents, traps, interceptors, separators, storm drainage, and plan reading.

Can passing the G24-N exam get me licensed?

Passing the G24-N exam may satisfy a testing requirement in some jurisdictions, but licensing approval depends on the state, county, city, or local licensing authority. Candidates should confirm all licensing requirements before registering for the exam.

Who should take this online exam prep course?

This course is intended for candidates preparing for the ICC Master Plumber G24-N exam, including experienced plumbers, supervisors, contractors, and license candidates who need structured exam preparation.

Why choose 1 Exam Prep for G24-N exam preparation?

1 Exam Prep provides organized online study support for candidates preparing for the ICC Master Plumber G24-N exam. The course helps reinforce plumbing code knowledge, reference navigation, table use, plan-reading preparation, and confidence-building exam study.