Plumber Red Seal · Question
What is the minimum vertical distance required between the flood level rim of a fixture and the highest possible level of a connected vent pipe termination?
The vent pipe must terminate at least 6 inches (150 mm) above the flood level rim of the highest fixture served, but typically 12 inches (300 mm) is a common st
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Question: What is the minimum vertical distance required between the flood level rim of a fixture and the highest possible level of a connected vent pipe termination?
Answer options:
- 6 inches (150 mm) ✅ 12 inches (300 mm)
- 18 inches (450 mm)
- 24 inches (600 mm)
Correct answer: 12 inches (300 mm)
Explanation: The vent pipe must terminate at least 6 inches (150 mm) above the flood level rim of the highest fixture served, but typically 12 inches (300 mm) is a common standard to account for potential backsplash or pressure fluctuations.
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