Plumber Red Seal · Question
What phenomenon occurs in a horizontal drainage pipe that is too large for its flow rate, leading to solids being deposited?
Oversized drainage pipes result in shallow flow, which reduces the water's velocity. This lack of scouring velocity allows solid waste to settle and potentially
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Question: What phenomenon occurs in a horizontal drainage pipe that is too large for its flow rate, leading to solids being deposited?
Answer options:
- Hydraulic jump
- Capillary action ✅ Reduced scouring velocity
- Venturi effect
Correct answer: Reduced scouring velocity
Explanation: Oversized drainage pipes result in shallow flow, which reduces the water's velocity. This lack of scouring velocity allows solid waste to settle and potentially cause blockages.
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