Colorado Pipefitter Licensing Exam
Practice Examination 100 Questions with
Correct Answers Plus Explanation 2026/27
Instant Pdf Download
Section 1: Regulatory Framework and Licensing (Questions 1-15)
1. Which Colorado agency oversees the licensing of plumbers and
pipefitters?
a) Colorado Department of Public Health and Environment
b) Division of Professions and Occupations - State Plumbing Board
c) Colorado Department of Transportation
d) Office of Economic Development
Correct Answer: b) Division of Professions and Occupations - State
Plumbing Board
Explanation: The State Plumbing Board, under the Division of
Professions and Occupations in DORA, regulates plumbing and
related trades .
2. Which code serves as the foundation for the Colorado Plumbing
Code?
a) International Building Code (IBC)
b) International Plumbing Code (IPC)
c) National Electrical Code (NEC)
d) Uniform Mechanical Code (UMC)
Correct Answer: b) International Plumbing Code (IPC)
,Explanation: The Board adopts and incorporates the IPC with
Colorado-specific additions, revisions, and deletions to form the
Colorado Plumbing Code .
3. Which code serves as the foundation for the Colorado Fuel Gas
Code?
a) International Fuel Gas Code (IFGC)
b) ASME B31.1
c) NFPA 54
d) Both A and C
Correct Answer: a) International Fuel Gas Code (IFGC)
Explanation: The IFGC is the primary code adopted by Colorado
jurisdictions for fuel gas systems and is incorporated into the
Colorado Fuel Gas Code .
4. Which license is the entry-level plumbing license in Colorado?
a) Journeyman Plumber
b) Master Plumber
c) Residential Plumber
d) Plumbing Apprentice
Correct Answer: c) Residential Plumber
Explanation: The Residential Plumber license is an entry-level
license for performing residential installations, requiring 2 years
(3,400 hours) of experience .
5. How many hours of practical experience are required for a
Journeyman Plumber license?
,a) 3,400 hours
b) 6,800 hours
c) 8,500 hours
d) 9,780 hours
Correct Answer: b) 6,800 hours
Explanation: Journeyman Plumber requires 4 years of experience,
equivalent to 6,800 hours .
6. What is the experience requirement for a Master Plumber license?
a) 6,800 hours
b) 8,500 hours
c) 9,780 hours
d) 10,000 hours
Correct Answer: b) 8,500 hours
Explanation: Master Plumber requires 8,500 hours of practical
experience .
7. What is the definition of gas piping under Colorado law?
a) Only piping used for natural gas
b) Any piping used to convey fuel gas, supplied by one meter, serving a
building or premises
c) Only piping installed inside a building
d) Piping used exclusively for propane
Correct Answer: b) Any piping used to convey fuel gas, supplied by
one meter, serving a building or premises
Explanation: Gas piping includes any arrangement of piping used to
convey fuel gas, supplied by one meter, and each arrangement
serving a building, structure, or premises .
, 8. Who is defined as a Journeyworker Plumber under Colorado law?
a) A person who supervises plumbing installations
b) A person, other than a master, residential, or apprentice, who installs,
alters, and repairs plumbing
c) A person who only repairs plumbing fixtures
d) A person who designs plumbing systems
Correct Answer: b) A person, other than a master, residential, or
apprentice, who installs, alters, and repairs plumbing
Explanation: A Journeyworker Plumber engages in the actual
installation, alteration, repair, and renovation of plumbing .
9. How long can an approved applicant wait to take the examination
before the application expires?
a) 6 months
b) 1 year
c) 2 years
d) 18 months
Correct Answer: b) 1 year
Explanation: An approved applicant who does not take the
examination within one year must submit an updated application .
10. How often must a Colorado plumbing license be renewed?
a) Annually
b) Every 2 years
c) Every 3 years
d) Every 5 years
Practice Examination 100 Questions with
Correct Answers Plus Explanation 2026/27
Instant Pdf Download
Section 1: Regulatory Framework and Licensing (Questions 1-15)
1. Which Colorado agency oversees the licensing of plumbers and
pipefitters?
a) Colorado Department of Public Health and Environment
b) Division of Professions and Occupations - State Plumbing Board
c) Colorado Department of Transportation
d) Office of Economic Development
Correct Answer: b) Division of Professions and Occupations - State
Plumbing Board
Explanation: The State Plumbing Board, under the Division of
Professions and Occupations in DORA, regulates plumbing and
related trades .
2. Which code serves as the foundation for the Colorado Plumbing
Code?
a) International Building Code (IBC)
b) International Plumbing Code (IPC)
c) National Electrical Code (NEC)
d) Uniform Mechanical Code (UMC)
Correct Answer: b) International Plumbing Code (IPC)
,Explanation: The Board adopts and incorporates the IPC with
Colorado-specific additions, revisions, and deletions to form the
Colorado Plumbing Code .
3. Which code serves as the foundation for the Colorado Fuel Gas
Code?
a) International Fuel Gas Code (IFGC)
b) ASME B31.1
c) NFPA 54
d) Both A and C
Correct Answer: a) International Fuel Gas Code (IFGC)
Explanation: The IFGC is the primary code adopted by Colorado
jurisdictions for fuel gas systems and is incorporated into the
Colorado Fuel Gas Code .
4. Which license is the entry-level plumbing license in Colorado?
a) Journeyman Plumber
b) Master Plumber
c) Residential Plumber
d) Plumbing Apprentice
Correct Answer: c) Residential Plumber
Explanation: The Residential Plumber license is an entry-level
license for performing residential installations, requiring 2 years
(3,400 hours) of experience .
5. How many hours of practical experience are required for a
Journeyman Plumber license?
,a) 3,400 hours
b) 6,800 hours
c) 8,500 hours
d) 9,780 hours
Correct Answer: b) 6,800 hours
Explanation: Journeyman Plumber requires 4 years of experience,
equivalent to 6,800 hours .
6. What is the experience requirement for a Master Plumber license?
a) 6,800 hours
b) 8,500 hours
c) 9,780 hours
d) 10,000 hours
Correct Answer: b) 8,500 hours
Explanation: Master Plumber requires 8,500 hours of practical
experience .
7. What is the definition of gas piping under Colorado law?
a) Only piping used for natural gas
b) Any piping used to convey fuel gas, supplied by one meter, serving a
building or premises
c) Only piping installed inside a building
d) Piping used exclusively for propane
Correct Answer: b) Any piping used to convey fuel gas, supplied by
one meter, serving a building or premises
Explanation: Gas piping includes any arrangement of piping used to
convey fuel gas, supplied by one meter, and each arrangement
serving a building, structure, or premises .
, 8. Who is defined as a Journeyworker Plumber under Colorado law?
a) A person who supervises plumbing installations
b) A person, other than a master, residential, or apprentice, who installs,
alters, and repairs plumbing
c) A person who only repairs plumbing fixtures
d) A person who designs plumbing systems
Correct Answer: b) A person, other than a master, residential, or
apprentice, who installs, alters, and repairs plumbing
Explanation: A Journeyworker Plumber engages in the actual
installation, alteration, repair, and renovation of plumbing .
9. How long can an approved applicant wait to take the examination
before the application expires?
a) 6 months
b) 1 year
c) 2 years
d) 18 months
Correct Answer: b) 1 year
Explanation: An approved applicant who does not take the
examination within one year must submit an updated application .
10. How often must a Colorado plumbing license be renewed?
a) Annually
b) Every 2 years
c) Every 3 years
d) Every 5 years
