Plumber Red Seal · Question
A plumber is roughing-in a new bathroom group, including a lavatory, a shower, and a water closet, all connecting to a common 75 mm branch drain. What is the maximum number of fixture units allowed on a 75 mm branch drain with a slope of 1:50?
The National Plumbing Code of Canada specifies that a 75 mm branch drain with a 1:50 slope can accommodate a maximum of 12 fixture units. Exceeding this limit w
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Question: A plumber is roughing-in a new bathroom group, including a lavatory, a shower, and a water closet, all connecting to a common 75 mm branch drain. What is the maximum number of fixture units allowed on a 75 mm branch drain with a slope of 1:50?
Answer options:
- 8 fixture units ✅ 12 fixture units
- 20 fixture units
- 30 fixture units
Correct answer: 12 fixture units
Explanation: The National Plumbing Code of Canada specifies that a 75 mm branch drain with a 1:50 slope can accommodate a maximum of 12 fixture units. Exceeding this limit would violate code and potentially lead to drainage issues.
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