RHODE ISLAND MASTER PIPEFITTER EXAM –
COMPREHENSIVE STUDY GUIDE & PRACTICE
REVIEW (2025 EDITION)
Rhode Island Master Pipefitter Exam: Practice Questions & Answers
Category 1: Codes, Regulations, and Safety (20 Questions)
1. According to the Rhode Island State Plumbing Code, which plumbing code is typically
adopted as the standard?
A) Uniform Plumbing Code (UPC)
B) International Plumbing Code (IPC) ✓
C) National Standard Plumbing Code (NSPC)
D) Any code approved by the local inspector
2. What is the minimum required working pressure for a Type L copper tube used in a
residential water distribution system?
A) 100 psi
B) 200 psi
C) 300 psi ✓
D) 400 psi
3. The primary purpose of an air gap in a potable water system is to:
A) Increase water pressure.
B) Prevent back-siphonage. ✓
C) Filter sediment from the water.
D) Vent the system.
4. OSHA regulations require that a confined space entry permit includes all of the following
EXCEPT:
A) The names of authorized entrants.
B) The results of atmospheric monitoring.
C) The social security numbers of the attendants. ✓
D) The identified hazards of the space.
5. A Pressure Reducing Valve (PRV) is required when the static water pressure from the
public main exceeds:
A) 60 psi
B) 80 psi ✓
, C) 100 psi
D) 120 psi
6. Which of the following must be protected by a vacuum breaker?
A) A shower head
B) A hose bibbspot ✓
C) A kitchen faucet
D) A tub filler
7. The minimum required size for a building sewer serving a single-family dwelling is:
A) 3 inches
B) 4 inches ✓
C) 6 inches
D) 8 inches
8. A "Danger" tag on a piece of equipment indicates:
A) A potential hazard that could cause minor injury.
B) An immediate hazard that will cause death or serious injury. ✓
C) A caution against unsafe practices.
D) That the equipment is out for repair.
9. The maximum horizontal developed length for a 2-inch fixture drain serving a water
closet is:
A) 6 feet
B) 8 feet
C) 10 feet ✓
D) 12 feet
10. According to OSHA, at what depth does an excavation require a protective system?
A) 3 feet
B) 4 feet
C) 5 feet ✓
D) 6 feet
11. The minimum slope for a 4-inch building sewer is:
A) 1/8 inch per foot
B) 1/4 inch per foot ✓
C) 1/2 inch per foot
D) 1 inch per foot
,12. A backflow preventer that is designed for high-hazard applications and provides the
maximum level of protection is a:
A) Pressure Vacuum Breaker (PVB)
B) Double Check Valve Assembly (DC)
C) Reduced Pressure Zone Assembly (RPZ) ✓
D) Atmospheric Vacuum Breaker (AVB)
13. The primary responsibility for jobsite safety, as per OSHA, lies with the:
A) Foreman
B) Safety Manager
C) Employer ✓
D) Employee
14. A cleanout is required within how many feet of the point where a building drain exits the
foundation?
A) 5 feet
B) 10 feet ✓
C) 15 feet
D) 20 feet
15. The minimum size for a gas piping system serving a residential furnace with a 120,000
BTU input is:
A) 1/2 inch
B) 3/4 inch ✓
C) 1 inch
D) 1 1/4 inch
16. Which of the following is an approved material for underground drainage piping?
A) PVC Schedule 40 ✓
B) ABS Schedule 20
C) Type M Copper
D) Galvanized Steel
17. The purpose of a "trap primer" is to:
A) Vent sewer gases.
B) Prevent trap siphonage.
C) Add water to a trap to maintain its seal. ✓
D) Clean the trap of debris.
, 18. Lockout/Tagout procedures are used to:
A) Secure tools at the end of the day.
B) Ensure energy sources are de-energized during servicing. ✓
C) Label hazardous materials.
D) Mark defective equipment.
19. The minimum required clearance in front of an electrical panel is:
A) 24 inches
B) 30 inches ✓
C) 36 inches
D) 42 inches
20. A wet vent is a vent that:
A) Services only one fixture.
B) Also serves as a drain for other fixtures. ✓
C) Is installed on the roof.
D) Has a continuous slope.
Category 2: Pipefitting Math and Sizing (20 Questions)
21. The volume of a cylindrical tank that is 10 feet in diameter and 20 feet tall is
approximately:
A) 1,570 cubic feet
B) 6,280 cubic feet ✓
C) 15,700 cubic feet
D) 62,800 cubic feet
22. The offset of a pipeline is 24 inches and the roll is 32 inches. What is the length of the
pipe run?
A) 40 inches ✓
B) 45 inches
C) 48 inches
D) 56 inches
23. A 45-degree elbow is used to create an offset. If the offset required is 14 inches, the
travel of the offset is:
A) 16.97 inches
B) 19.80 inches ✓
COMPREHENSIVE STUDY GUIDE & PRACTICE
REVIEW (2025 EDITION)
Rhode Island Master Pipefitter Exam: Practice Questions & Answers
Category 1: Codes, Regulations, and Safety (20 Questions)
1. According to the Rhode Island State Plumbing Code, which plumbing code is typically
adopted as the standard?
A) Uniform Plumbing Code (UPC)
B) International Plumbing Code (IPC) ✓
C) National Standard Plumbing Code (NSPC)
D) Any code approved by the local inspector
2. What is the minimum required working pressure for a Type L copper tube used in a
residential water distribution system?
A) 100 psi
B) 200 psi
C) 300 psi ✓
D) 400 psi
3. The primary purpose of an air gap in a potable water system is to:
A) Increase water pressure.
B) Prevent back-siphonage. ✓
C) Filter sediment from the water.
D) Vent the system.
4. OSHA regulations require that a confined space entry permit includes all of the following
EXCEPT:
A) The names of authorized entrants.
B) The results of atmospheric monitoring.
C) The social security numbers of the attendants. ✓
D) The identified hazards of the space.
5. A Pressure Reducing Valve (PRV) is required when the static water pressure from the
public main exceeds:
A) 60 psi
B) 80 psi ✓
, C) 100 psi
D) 120 psi
6. Which of the following must be protected by a vacuum breaker?
A) A shower head
B) A hose bibbspot ✓
C) A kitchen faucet
D) A tub filler
7. The minimum required size for a building sewer serving a single-family dwelling is:
A) 3 inches
B) 4 inches ✓
C) 6 inches
D) 8 inches
8. A "Danger" tag on a piece of equipment indicates:
A) A potential hazard that could cause minor injury.
B) An immediate hazard that will cause death or serious injury. ✓
C) A caution against unsafe practices.
D) That the equipment is out for repair.
9. The maximum horizontal developed length for a 2-inch fixture drain serving a water
closet is:
A) 6 feet
B) 8 feet
C) 10 feet ✓
D) 12 feet
10. According to OSHA, at what depth does an excavation require a protective system?
A) 3 feet
B) 4 feet
C) 5 feet ✓
D) 6 feet
11. The minimum slope for a 4-inch building sewer is:
A) 1/8 inch per foot
B) 1/4 inch per foot ✓
C) 1/2 inch per foot
D) 1 inch per foot
,12. A backflow preventer that is designed for high-hazard applications and provides the
maximum level of protection is a:
A) Pressure Vacuum Breaker (PVB)
B) Double Check Valve Assembly (DC)
C) Reduced Pressure Zone Assembly (RPZ) ✓
D) Atmospheric Vacuum Breaker (AVB)
13. The primary responsibility for jobsite safety, as per OSHA, lies with the:
A) Foreman
B) Safety Manager
C) Employer ✓
D) Employee
14. A cleanout is required within how many feet of the point where a building drain exits the
foundation?
A) 5 feet
B) 10 feet ✓
C) 15 feet
D) 20 feet
15. The minimum size for a gas piping system serving a residential furnace with a 120,000
BTU input is:
A) 1/2 inch
B) 3/4 inch ✓
C) 1 inch
D) 1 1/4 inch
16. Which of the following is an approved material for underground drainage piping?
A) PVC Schedule 40 ✓
B) ABS Schedule 20
C) Type M Copper
D) Galvanized Steel
17. The purpose of a "trap primer" is to:
A) Vent sewer gases.
B) Prevent trap siphonage.
C) Add water to a trap to maintain its seal. ✓
D) Clean the trap of debris.
, 18. Lockout/Tagout procedures are used to:
A) Secure tools at the end of the day.
B) Ensure energy sources are de-energized during servicing. ✓
C) Label hazardous materials.
D) Mark defective equipment.
19. The minimum required clearance in front of an electrical panel is:
A) 24 inches
B) 30 inches ✓
C) 36 inches
D) 42 inches
20. A wet vent is a vent that:
A) Services only one fixture.
B) Also serves as a drain for other fixtures. ✓
C) Is installed on the roof.
D) Has a continuous slope.
Category 2: Pipefitting Math and Sizing (20 Questions)
21. The volume of a cylindrical tank that is 10 feet in diameter and 20 feet tall is
approximately:
A) 1,570 cubic feet
B) 6,280 cubic feet ✓
C) 15,700 cubic feet
D) 62,800 cubic feet
22. The offset of a pipeline is 24 inches and the roll is 32 inches. What is the length of the
pipe run?
A) 40 inches ✓
B) 45 inches
C) 48 inches
D) 56 inches
23. A 45-degree elbow is used to create an offset. If the offset required is 14 inches, the
travel of the offset is:
A) 16.97 inches
B) 19.80 inches ✓
