Sanitary Drainage Systems 117 Exam
2026/2027 | Complete Study Guide |
Practice Test
Drain traps serve which of the following purposes:
1. To seal the outlet fixture
2. To prevent back flow of sewer gas
3. To deflect grease and oil for separate disposal
a. 2
b. 1
c. 1,3
d. 1,2
e. 1,2,3. - correct answer-D
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°.
b. The stack vent prevents sewer gas from being vented through
the roof.
c. The stack vent and loop vents allow equalisation of pressure in
the system.
, d. Most buildings have several waste and soil stacks with each
stack providing drainage for all the sections of the building.
e. In a multi story building one stack is used for venting and
waste disposal. - correct answer-C
Which of the following has a trap as an integral part of the fixture?
a. A water closet
b. A sink
c. A storm drain
d. A sewer
e. A sump pump. - correct answer-A
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 is caused by:
a. Chattering of faucets
b. Whistling of faucets
c. Water hammer
d. Hissing of pipes
e. Creaking of pipes - correct answer-C
What is the correct sequence, from start to finish, needed to replace a washer in a
faucet?
1. Unscrew the packing nut and remove the spindle.
2. Replace the spindle and tighten the packing nut.
3. Remove the washer from the end of the spindle.
2026/2027 | Complete Study Guide |
Practice Test
Drain traps serve which of the following purposes:
1. To seal the outlet fixture
2. To prevent back flow of sewer gas
3. To deflect grease and oil for separate disposal
a. 2
b. 1
c. 1,3
d. 1,2
e. 1,2,3. - correct answer-D
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°.
b. The stack vent prevents sewer gas from being vented through
the roof.
c. The stack vent and loop vents allow equalisation of pressure in
the system.
, d. Most buildings have several waste and soil stacks with each
stack providing drainage for all the sections of the building.
e. In a multi story building one stack is used for venting and
waste disposal. - correct answer-C
Which of the following has a trap as an integral part of the fixture?
a. A water closet
b. A sink
c. A storm drain
d. A sewer
e. A sump pump. - correct answer-A
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 is caused by:
a. Chattering of faucets
b. Whistling of faucets
c. Water hammer
d. Hissing of pipes
e. Creaking of pipes - correct answer-C
What is the correct sequence, from start to finish, needed to replace a washer in a
faucet?
1. Unscrew the packing nut and remove the spindle.
2. Replace the spindle and tighten the packing nut.
3. Remove the washer from the end of the spindle.
