Plumber Red Seal · Question
What is the primary factor limiting the number of fixture units allowed on a horizontal branch drain?
The diameter of the horizontal branch drain is the primary factor determining its capacity to carry away wastewater. Larger diameter pipes can accommodate more
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Question: What is the primary factor limiting the number of fixture units allowed on a horizontal branch drain?
Answer options:
- The length of the branch
- The slope of the branch ✅ The diameter of the branch
- The type of fixtures connected
Correct answer: The diameter of the branch
Explanation: The diameter of the horizontal branch drain is the primary factor determining its capacity to carry away wastewater. Larger diameter pipes can accommodate more fixture units.
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