WorksheetsCHAPTER 8 AND 9: Indirect waste and Vents
Total questions: 10
Worksheet time: 5mins
Which of the following can be directly connected to a drainage system?
a) A relief vent from a water supply system
b) A sump pump approved by the Administrative Authority
c) A waste pipe carrying discharges under pressure
d) None of the above
How can appliances with pumps or drainage outlets discharge waste?
a) By connecting directly to a sewer line
b) By using indirect waste pipes into an approved open receptor
c) By discharging onto the ground
d) By connecting to a drinking fountain drain
Under what condition may clean running water used as a cooling medium discharge into a drainage system?
a) Only when directly connected
b) If approved by the Department having jurisdiction
c) Only if it discharges onto the ground
d) If connected to a closed-loop cooling system
What must be done to chemical or industrial liquid waste before discharging into the drainage system?
a) It must be neutralized or pretreated
b) It must be diluted with clean water
c) It must be mixed with regular sewage
d) It can be discharged as-is
What is the primary purpose of vent pipes in a plumbing system?
a) To provide water pressure
b) To prevent siphonage and back-pressure in traps
c) To store excess water
d) To filter water before it reaches the sewer
When may vent piping be omitted on an interceptor?
a) If the interceptor acts as a primary settling tank and discharges into a secondary interceptor
b) If the plumbing system has no traps
c) If the fixtures are used less than once a day
d) If the building has a high water table
Which of the following materials CANNOT be used underground for vent pipes?
a) Cast iron
b) PVC
c) Galvanized steel
d) Copper
The cross-sectional area of all vent pipes in a building must be:
a) Equal to the total number of fixture units
b) Larger than the largest required building sewer
c) Smaller than the largest soil stack
d) Equal to the roof vent opening
How far above the roof must a vent pipe terminate?
a) At least 10 cm
b) At least 15 cm
c) At least 30 cm
d) At least 50 cm
How far must a vent opening be from an openable window, door, or air intake?
a) At least 0.3 meters
b) At least 0.6 meters
c) At least 0.9 meters
d) At least 1.2 meters
