2018 Plumbing License Exam 1

19. When a fixture is individually vented, the vent connects to __________.

• a. a drain receiving the discharge from more than one fixture drain
• b. the fixture branch receiving the discharge
• c. the fixture drain of the trapped fixture
• d. a minimum 1 1/2- inch drain

06. The minimum burial depth of exterior water service piping is __________ inches below grade.

• a. 6
• b. 12
• c. 24
• d. 30

19. What is the minimum access opening size required for a water heater installed in an attic?

• 20 inches by 30 inch
• b. 20 inches by 24 inches
• c. 24 inches by 30 inches
• d. 30 inches by 30 inches

06. A hub drain receiving the discharge from an ice storage bin through an air gap and connected to the sanitary drainage system is not required to __________.

• 6.       a. be trapped and vented
• 6.       be equipped with a removable strainer
• 6.       c. be designed and installed to prevent splashing
• 6.       d. extend a minimum of 1 inch above the surrounding floor

12. The minimum air gap required for a whirlpool tub filler spout with a 1-inch diameter effective opening that is located away from sidewalls is...

• One inch
• 1.5 inches
• 2 inches
• 2.5 inches

19. Water supply lines and fittings for every plumbing fixture shall be installed so as to prevent __________.

• condensation
• backflow
• vibration
• expansion

When the maximum allowable water pressure within a building is exceeded, a...is required.

• flow control valve vented
• pressure reducing valve
• In-line pressure balancing valve
• Pressure relief valve

09. A...backflow prevention assembly is not approved for protection of the potable water supply to an automatic fire sprinkler system.

• Pressure vacuum breaker
• Reduced pressure principle Fire Protection
• double check
• Double check Fire Protection

13. The discharge pipe of a sewage ejector connecting to horizontal drainage piping shall be connected through a __________.

• a. wye fitting into the side of the drainage piping
• b. sanitary tee into the side of the drainage piping
• c. sanitary tee into the top of the drainage piping
• d. wye fitting into the top of the drainage piping

19. One inch cross-linked polyethylene (PEX) piping installed horizontally requires hangers at intervals not greater than __________ inches.

• 48
• 36
• 32
• 24