Skip to content
WorkZen
Academy
Home
All Trades
My Progress
en
English
EN
Français
FR
Español
ES
Menu
Home
All Trades
My Progress
Search certifications...
en
English
EN
Français
FR
Español
ES
Academy
Plumbing
Plumber Red Seal Certification
Drainage, Waste & Vent Systems
Knowledge Check
Drainage, Waste & Vent Systems
Knowledge Check
Knowledge Check
1 / 10
The minimum diameter of a building sewer serving a one- and two-family residential building is
A
150 mm (6 inches)
B
50 mm (2 inches)
C
75 mm (3 inches)
D
100 mm (4 inches)
Check Answer
Back to lessons
Next module: Traps & Venting Systems
Next module: