RI JOURNEYMAN PLUMBING CODES AND STANDARDS
EXAM 2025|170 QUESTIONS WITH ACCURATE
SOLUTIONS
1. If there is a conflict between a code requirement and the manufacturer's
installation instructions, which one shall apply?
installer preference
the code requirement
the more restrictive provision
manufacturer's installation instructions
2. When performing a shower liner test, what is the required depth of
standing water in the shower liner when the drain is plugged?
1-1/2"
2"
3"
1"
3. If a building inspector finds that a service sink has been used for human
waste disposal, what potential consequences could arise?
The building may face code violations and require remediation
to meet health standards.
The service sink will be replaced at the owner's expense.
No action will be taken as it is a minor issue.
The inspector will issue a warning without further action.
4. If a plumbing inspector finds valves in the discharge piping of a water
,heater, what action should they take based on plumbing codes?
They should require the removal of the valves to comply with
safety regulations.
, They should ignore the issue if there are no leaks.
They should recommend adding more valves for safety.
They should approve the installation as is.
5. What is the minimum size for sink waste outlets according to plumbing
codes?
1 1/2 inch (38mm)
2 inch (51mm)
1 inch (25mm)
3 inch (76mm)
6. What is the requirement for water heater discharge piping serving a
pressure relief valve according to plumbing codes?
It shall not be trapped.
It should be made of copper.
It must be insulated.
It can be trapped if properly supported.
7. In a building where waste water temperatures can reach 150°F, what
should be considered when selecting sanitary drainage piping materials?
The piping can be standard PVC as it is cheaper.
The piping material must be rated for temperatures above 150°F.
The installation can ignore temperature ratings if insulated.
Only the fittings need to be rated for high temperatures.
8. What is the minimum distance that the critical level of a vacuum breaker
must be set above the flood level rim of a fixture or device?
6 inches
, 4 inches
3 inches
12 inches
9. Describe the significance of keeping a chemical waste system
completely separated from the sanitary drainage system.
It reduces the cost of plumbing installations.
It prevents contamination of the sanitary system and protects
public health.
It allows for easier maintenance of the plumbing system.
It simplifies the design of plumbing fixtures.
10. If a new plumbing fixture is installed in a building, how would you verify
its compliance with NSF standard 372?
Check the fixture's certification label for NSF standard 372 and
confirm that it states a lead content of 0.25 percent or less.
Consult local plumbing codes to determine if the fixture is
acceptable without NSF certification.
Inspect the fixture for visible lead components and assume
compliance based on appearance.
Review the manufacturer's warranty for the fixture to ensure it
meets safety standards.
11. What must be clearly stamped or attached to the outside of storage
tanks and water heaters?
max allowable working pressure
installation guidelines
drain pipe sizes
minimum safety standards
EXAM 2025|170 QUESTIONS WITH ACCURATE
SOLUTIONS
1. If there is a conflict between a code requirement and the manufacturer's
installation instructions, which one shall apply?
installer preference
the code requirement
the more restrictive provision
manufacturer's installation instructions
2. When performing a shower liner test, what is the required depth of
standing water in the shower liner when the drain is plugged?
1-1/2"
2"
3"
1"
3. If a building inspector finds that a service sink has been used for human
waste disposal, what potential consequences could arise?
The building may face code violations and require remediation
to meet health standards.
The service sink will be replaced at the owner's expense.
No action will be taken as it is a minor issue.
The inspector will issue a warning without further action.
4. If a plumbing inspector finds valves in the discharge piping of a water
,heater, what action should they take based on plumbing codes?
They should require the removal of the valves to comply with
safety regulations.
, They should ignore the issue if there are no leaks.
They should recommend adding more valves for safety.
They should approve the installation as is.
5. What is the minimum size for sink waste outlets according to plumbing
codes?
1 1/2 inch (38mm)
2 inch (51mm)
1 inch (25mm)
3 inch (76mm)
6. What is the requirement for water heater discharge piping serving a
pressure relief valve according to plumbing codes?
It shall not be trapped.
It should be made of copper.
It must be insulated.
It can be trapped if properly supported.
7. In a building where waste water temperatures can reach 150°F, what
should be considered when selecting sanitary drainage piping materials?
The piping can be standard PVC as it is cheaper.
The piping material must be rated for temperatures above 150°F.
The installation can ignore temperature ratings if insulated.
Only the fittings need to be rated for high temperatures.
8. What is the minimum distance that the critical level of a vacuum breaker
must be set above the flood level rim of a fixture or device?
6 inches
, 4 inches
3 inches
12 inches
9. Describe the significance of keeping a chemical waste system
completely separated from the sanitary drainage system.
It reduces the cost of plumbing installations.
It prevents contamination of the sanitary system and protects
public health.
It allows for easier maintenance of the plumbing system.
It simplifies the design of plumbing fixtures.
10. If a new plumbing fixture is installed in a building, how would you verify
its compliance with NSF standard 372?
Check the fixture's certification label for NSF standard 372 and
confirm that it states a lead content of 0.25 percent or less.
Consult local plumbing codes to determine if the fixture is
acceptable without NSF certification.
Inspect the fixture for visible lead components and assume
compliance based on appearance.
Review the manufacturer's warranty for the fixture to ensure it
meets safety standards.
11. What must be clearly stamped or attached to the outside of storage
tanks and water heaters?
max allowable working pressure
installation guidelines
drain pipe sizes
minimum safety standards
