Free Journeyman Plumber Certification Questions and Answers — Questions and Answers
Question 1: It is necessary for sewage pumps or sumps used to store sewage to be ________.
- Placed outside of any habitable structure
- Vented
- Covered with a gas-tight cover
- Both "vented" and "covered with a gas-tight cover" (Correct answer)
Correct answer: Both "vented" and "covered with a gas-tight cover"
It is necessary to vent sump sewage pumps that remove sanitary waste to the outside air. If a pneumatic sewer ejector pump is to be installed, the vent cannot be connected to a general venting system. The vent can be connected back to a common venting system when a standard sewer pump is to be used. A vent for a sewage sump will typically need to have a minimum diameter of two inches. Sewage sump coverings, in addition to effective venting, must be gas-tight.
Question 2: When is a cleanout appropriate for a new fixture installation? What, in other words, qualifies the removal of a cleanout plug, its replacement with a male adapter, and the subsequent extension of piping to a new fixture?
- When approved by the master plumber who has been issued a plumbing permit
- When another cleanout is provided
- When approved by a code enforcement officer and another cleanout is provided to replace the one being used as a connection point of drainage piping for a new fixture. (Correct answer)
- Never
Correct answer: When approved by a code enforcement officer and another cleanout is provided to replace the one being used as a connection point of drainage piping for a new fixture.
Unless the connection is authorized by a code officer and a new cleanout is provided to replace the cleanout being converted to a connection point for drainage piping, fittings housing cleanout plugs are not permitted to be utilized as a connection point for a drainage pipe that will feed a new fixture.
Question 3: The plumbing that transports potable water from a water source to a water distribution system is referred to as which of the following?
- Water supply
- Water main
- Either water main and water supply (Correct answer)
- None of the above
Correct answer: Either water main and water supply
A water main or a water supply is the main conduit that transports potable water to a water-distribution system. Regardless of whether the water is flowing from a municipal water system or a water well, this is the situation. A water supply pipe must have a minimum diameter of.75 inches.
Question 4: Which of the following must be preserved for a water service?
- Damage during or related to backfilling of the water service trench (Correct answer)
- Geothermal shifting due to seismic action
- Tampering
- Vandalism
Correct answer: Damage during or related to backfilling of the water service trench
A water service pipe needs to be buried below the area's frost line in order to prevent freezing. In order to prevent floating, the pipe must also be secured from floods. To prevent damage to the piping from occurring under the weight of the backfill material and settlement movement, the backfill must be clean and devoid of sharp items when backfilling a ditch that contains a water service.
Question 5: Which of the following tools can be used to enhance water pressure when a water source's pressure is insufficient for a plumbing system's requirements?
- A booster pump (Correct answer)
- A pressure increasing valve
- All of the above
- None of the above
Correct answer: A booster pump
To boost water pressure as needed, booster pumps can be installed. As a component of the water distribution system, these pumps are placed. These pumps have the capacity to decrease volume to boost pressure without impairing the functionality of plumbing fixtures.
Question 6: Where the stack and its offset are functioning ____________ as a building drain, vertical offset vents are not needed.
- excluded
- identified
- sized (Correct answer)
- wet vented
Correct answer: sized
Where a stack and its offset are sized as building drains, vents for vertical offsets are not necessary. Vent pipes frequently have a diameter that is less than the drain they support. The vent is exempt from some vent rules, though, if it has the same diameter as the drain it is feeding. In this instance, it means that vertical offset venting is not required for vents with diameters equivalent to the drains being supplied.
Question 7: Which of the following fittings may shift the orientation of piping from horizontal to vertical?
- Short-sweep fittings
- 90-degree elbows
- Quarter bend
- All of the above (Correct answer)
Correct answer: All of the above
It is possible to switch pipes from a horizontal to a vertical position using any of the listed fittings. Any fitting that is approved for use when changing from a horizontal to a horizontal direction is also permitted when moving to a vertical position.
