Chapter 37 Sanitary Drainage Systems

Question 1

The purpose of a trap in a sanitary sewer piping system is to:

a) Stop hair and other solids from entering the sewer
b) Keep soap scum from getting into the septic system
c) Allow condensate to escape while holding back steam
d) Stop sewer gases from escaping from the waste system through the fixture

Answer 1

d) Stop sewer gases from escaping from the waste system through the fixture

Question 2

When externally located, the trap should be within ______ of the fixture.

a) 900 mm (3 ft)
b) 500 mm (1.7 ft)
c) 750 mm (2.5 ft)
d) 400 mm (1.3 ft)

Answer 2

a) 900 mm (3 ft)

Question 3

What is the purpose of cleanouts in drainage lines, and where are they typically located?

SHORT ANSWER QUESTION.

Answer 3

Cleanouts allow access for cleaning and inspection service. They are normally found at the base of plumbing stacks, above running traps, or in the floor under a cover plate.

Question 4

Grease that drains from kitchen fixtures should be removed by passing the water through a:

a) Heat Exchanger
b) Filter
c) Grease trap
d) Closed bucket

Answer 4

c) Grease trap

Question 5

Materials, often used for indoor sanitary drainage piping, consist of which of the following.

a) Cast Iron
b) Galvanized steel
c) Copper
d) All of the above

Answer 5

d) All of the above