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