The pounding or banging of pipes and shuddering of fixtures caused by a shock wave resulting from a sudden stop of water flow in a pipe results in which of the following sounds?

The pounding or banging of pipes and shuddering of fixtures caused by a shock wave resulting from a sudden stop of water flow in a pipe results in which of the following sounds?

a) chattering of faucets
b) whistling of faucets
c) water hammer
d) hissing in the pipes
e) creaking of the pipes






Answer: C

What is the correct sequence, from start to finish, needed to replace a washer in a faucet? i) Unscrew the packing nut and remove the spindle. ii) If the valve seat is smooth and serviceable, replace the spindle and tighten the packing nut. iii) Remove the washer from the end of the spindle. iv) Shut off the water at the nearest isolation valve. v) Place the new washer on the end of the spindle.

What is the correct sequence, from start to finish, needed to replace a washer in a faucet?
i) Unscrew the packing nut and remove the spindle.
ii) If the valve seat is smooth and serviceable, replace
the spindle and tighten the packing nut.
iii) Remove the washer from the end of the spindle.
iv) Shut off the water at the nearest isolation valve.
v) Place the new washer on the end of the spindle.

a) i, ii, iii, iv, v
b) iv, i, iii, v, ii
c) v, iv, iii, ii, i
d) iv, i, v, ii
e) v, ii, i, iv, iii

Answer: B

Which of the following statements is true?

Which of the following statements is true?

a) Branch line connections to the waste stack should be connected at an angle of more than 45 degrees.
b) The stack vent prevents sewer gas from being vented through the roof.
c) The stack vent and loop vents allow equalization of pressure in the system.
d) In multi-story buildings one stack is used for venting and waste disposal.
e) Most buildings have several waste and soil stacks with each stack providing drainage for all the sections of the building.

Answer: C

Sewer smells coming from a floor drain in a washroom can be a problem if the floors of the washroom are not cleaned often. Which of the following courses of action is the simplest way to stop the smell from coming out of the drain?

Sewer smells coming from a floor drain in a washroom can be a problem if the floors of the washroom are not cleaned often. Which of the following courses of action is the simplest way to stop the smell from coming out of the drain?

a) Pour a pail of water in the drain.
b) Cover the drain opening.
c) Sanitize the washroom.
d) Flush the drain with caustic soda.
e) Improve the washroom's ventilation.






Answer: A

Which of the following has a trap as an integral part of the fixture?

Which of the following has a trap as an integral part of the fixture?

a) water closet
b) sink
c) storm drain
d) sewer
e) sump pump

Answer: A

Drain traps serve which of the following purposes: i) to seal the outlet fixture ii) to prevent back flow of sewer gas iii) to deflect grease and oil for separate disposal

Drain traps serve which of the following purposes:
i) to seal the outlet fixture
ii) to prevent back flow of sewer gas
iii) to deflect grease and oil for separate disposal

a) ii) only
b) i) only
c) both i) and iii)
d) both i) and ii)
e) i), ii) and iii)

Answer: D

Corrugations in outside aluminum storm piping are required to:

Corrugations in outside aluminum storm piping are required to:

a. Increase the flow of storm water
b. Decrease potential for blockage
c. Eliminate corrosion
d. Allow water to flow if there is scale build up
e. Permit expansion of the aluminum





Answer: E

The first step when repairing a faucet is:

The first step when repairing a faucet is:

a. Replace the spindle and tighten the packing nut.
b. Shut off the water at the nearest isolation valve.
c. Unscrew the packing nut and remove the spindle.
d. Remove the washer from the end of the spindle.
e. Place a new washer on the end of the spindle.





Answer: B

Which of the following has a trap as an integral part of the fixture?

Which of the following has a trap as an integral part of the fixture?

a. A toilet
b. A sink
c. A roof drain
d. A laundry tub
e. A bathtub






Answer: A

A deep seal plumbing trap has a water seal depth of:

A deep seal plumbing trap has a water seal depth of:

a. 5 cm
b. 10 cm
c. 15 cm
d. 20 cm
e. 25 cm





Answer: B

Which of the following statements about footing drains is untrue?

Which of the following statements about footing drains is untrue?

a. Installed to prevent an accumulation of ground water around the building foundations
b. Used to reduce the hydrostatic pressure on the walls below ground level
c. Perforated or porous pipe is used to collect the water near the footings
d. The collected water is drained to a remote area or into a sump
e. They are installed only in wet climates





Answer: E

Which of the following is the simplest way to stop sewer gas from coming out of floor drains?

Which of the following is the simplest way to stop sewer gas from coming out of floor drains?

a. Pour a pail of water into the drain
b. Cover the drain opening
c. Sanitize the washroom
d. Flush the drain with caustic soda
e. Improve the washroom's ventilation






Answer: A

A common plumbing trap has a water seal depth of:

A common plumbing trap has a water seal depth of:

a. 5 cm
b. 10 cm
c. 15 cm
d. 20 cm
e. 25 cm




Answer: A

Negative pressure in a sanitary drainage system may result in which of the following problems:

Negative pressure in a sanitary drainage system may result in which of the following problems:

a. Clogging of drain pipes
b. Build up of scale in water closets
c. Loss of trap sealing water
d. Forcing of sewer gases through traps
e. Collection of sediment in drain traps







Answer: C

In a sanitary drainage system, a drain trap should be located within _____ of the fixture it serves.

In a sanitary drainage system, a drain trap should be located within _____ of the fixture it serves.

a. 750 mm
b. 610 mm
c. 590 mm
d. 460 mm
e. 350 mm

Answer: B

Some water closets are provided with flush tanks while others are equipped with:

Some water closets are provided with flush tanks while others are equipped with:

a. Float valves
b. Flushometers
c. Ball cocks
d. Drain valves
e. Flood valves






Answer: B

The blow off valve in a storage heater is used to:

The blow off valve in a storage heater is used to:

a. Take potable water samples
b. Monitor unsafe temperatures
c. Release steam should the heater malfunction to avoid flashing of steam in the fixtures
d. Remove sediment from the heater
e. Relieve excess pressure in the heater, during periods of low hot water demand.





Answer: D