WorksheetsChapter 10: TRAPS AND INTERCEPTORS
Total questions: 10
Worksheet time: 5mins
What is the main function of a plumbing trap?
a) To increase water pressure
b) To prevent sewer gases from entering a building
c) To reduce water flow speed
d) To collect solid waste before it enters the drain
2. Which of the following plumbing fixtures must have a separate trap?
a) Each domestic clothes washer
b) A group of three adjacent lavatories
c) A set of laundry tubs with a single trap
d) A kitchen sink with a laundry tub
What is the maximum length allowed for a fixture’s tailpiece (vertical pipe between the fixture and the trap)?
a) 0.3 meters
b) 0.5 meters
c) 0.6 meters
d) 1.0 meters
What is the minimum depth of a trap seal?
a) 25 mm
b) 51 mm
c) 76 mm
d) 102 mm
Which type of trap is prohibited by the Plumbing Code?
a) P-trap
b) S-trap
c) Drum trap (without approval)
d) Both b and c
Which of the following materials is not an approved material for traps?
a) PVC
b) Cast iron
c) Glass
d) ABS
A trap arm can change direction without requiring a cleanout if the direction change does not exceed:
a) 30 degrees
b) 45 degrees
c) 90 degrees
d) 180 degrees
For trap arms 76 mm or larger, what is the maximum angle change allowed without requiring a cleanout?
a) 15 degrees
b) 22.5 degrees
c) 45 degrees
d) 90 degrees
What is the purpose of a vent pipe in relation to a plumbing trap?
a) To increase water pressure
b) To prevent trap siphonage and back-pressure
c) To filter out solid waste
d) To reduce pipe diameter
What happens if a fixture is double-trapped?
a) It improves drainage
b) It reduces the risk of siphonage
c) It slows or prevents proper drainage
d) It increases water pressure
