USVI Plumbing Licensing Journeyman Exam 200 Practice Questions with Verified
Answers
USVI Plumbing Licensing Journeyman Exam: 210 Practice Questions with Verified
Answers and Rationales
This comprehensive practice exam is designed to help candidates prepare for the
US Virgin Islands Journeyman Plumber licensing examination. The questions cover
code requirements, trade knowledge, safety practices, and local licensing
regulations based on the applicable codes and standards referenced by the USVI.
Exam Administration: The USVI Journeyman Plumber examination is administered
through PSI Testing Services and is computer-based, offered weekly . The exam
content is based on the International Plumbing Code, with the transition from the
2018 edition to the 2021 edition taking effect in 2025 .
Licensing Requirements: Applicants must have completed at least four years as an
apprentice or worker in the trade under a licensed Master Plumber or Plumbing
Contractor. The Board may allow up to 1500 hours of accredited study to count
toward the experience requirement .
SECTION 1: GENERAL PLUMBING CODE KNOWLEDGE
1. What is the minimum size of a plumbing fixture drain for a water closet?
A) 2 inches
,B) 3 inches
C) 4 inches
D) 1½ inches
Answer: B) 3 inches
Rationale: The International Plumbing Code requires water closet fixture drains to
be a minimum of 3 inches in diameter to handle the discharge volume and solid
waste.
2. The maximum horizontal distance from a fixture to the trap weir is:
A) 24 inches
B) 30 inches
C) 36 inches
D) 48 inches
Answer: B) 30 inches
,Rationale: Each plumbing fixture shall be provided with a trap located as close to
the fixture outlet as possible. The horizontal distance from the fixture outlet to
the trap weir shall not exceed 30 inches.
3. What is the minimum slope required for a 3-inch building drain?
A) ¼ inch per foot
B) ⅛ inch per foot
C) ½ inch per foot
D) 1 inch per foot
Answer: B) ⅛ inch per foot
Rationale: For pipes 3 inches and larger, the minimum slope is ⅛ inch per foot.
Pipes 2½ inches and smaller require ¼ inch per foot.
4. Which type of pipe is most commonly used for underground water supply lines
in the USVI?
A) Galvanized steel
B) Cast iron
C) Copper or PVC
, D) Lead
Answer: C) Copper or PVC
Rationale: Copper tubing (Type K, L, or M) and PVC pipe (ASTM D1785 or D2241)
are approved materials for water distribution systems per code requirements .
Lead pipe is prohibited in plumbing systems.
5. What is the minimum clearance required for a plumbing access panel?
A) 12 inches by 12 inches
B) 18 inches by 18 inches
C) 24 inches by 24 inches
D) 6 inches by 6 inches
Answer: A) 12 inches by 12 inches
Rationale: Access panels shall be at least 12 inches by 12 inches and shall provide
access to valves, cleanouts, and other accessible plumbing components.
6. A backflow prevention device is required to protect against:
Answers
USVI Plumbing Licensing Journeyman Exam: 210 Practice Questions with Verified
Answers and Rationales
This comprehensive practice exam is designed to help candidates prepare for the
US Virgin Islands Journeyman Plumber licensing examination. The questions cover
code requirements, trade knowledge, safety practices, and local licensing
regulations based on the applicable codes and standards referenced by the USVI.
Exam Administration: The USVI Journeyman Plumber examination is administered
through PSI Testing Services and is computer-based, offered weekly . The exam
content is based on the International Plumbing Code, with the transition from the
2018 edition to the 2021 edition taking effect in 2025 .
Licensing Requirements: Applicants must have completed at least four years as an
apprentice or worker in the trade under a licensed Master Plumber or Plumbing
Contractor. The Board may allow up to 1500 hours of accredited study to count
toward the experience requirement .
SECTION 1: GENERAL PLUMBING CODE KNOWLEDGE
1. What is the minimum size of a plumbing fixture drain for a water closet?
A) 2 inches
,B) 3 inches
C) 4 inches
D) 1½ inches
Answer: B) 3 inches
Rationale: The International Plumbing Code requires water closet fixture drains to
be a minimum of 3 inches in diameter to handle the discharge volume and solid
waste.
2. The maximum horizontal distance from a fixture to the trap weir is:
A) 24 inches
B) 30 inches
C) 36 inches
D) 48 inches
Answer: B) 30 inches
,Rationale: Each plumbing fixture shall be provided with a trap located as close to
the fixture outlet as possible. The horizontal distance from the fixture outlet to
the trap weir shall not exceed 30 inches.
3. What is the minimum slope required for a 3-inch building drain?
A) ¼ inch per foot
B) ⅛ inch per foot
C) ½ inch per foot
D) 1 inch per foot
Answer: B) ⅛ inch per foot
Rationale: For pipes 3 inches and larger, the minimum slope is ⅛ inch per foot.
Pipes 2½ inches and smaller require ¼ inch per foot.
4. Which type of pipe is most commonly used for underground water supply lines
in the USVI?
A) Galvanized steel
B) Cast iron
C) Copper or PVC
, D) Lead
Answer: C) Copper or PVC
Rationale: Copper tubing (Type K, L, or M) and PVC pipe (ASTM D1785 or D2241)
are approved materials for water distribution systems per code requirements .
Lead pipe is prohibited in plumbing systems.
5. What is the minimum clearance required for a plumbing access panel?
A) 12 inches by 12 inches
B) 18 inches by 18 inches
C) 24 inches by 24 inches
D) 6 inches by 6 inches
Answer: A) 12 inches by 12 inches
Rationale: Access panels shall be at least 12 inches by 12 inches and shall provide
access to valves, cleanouts, and other accessible plumbing components.
6. A backflow prevention device is required to protect against:
