Heavy Equipment Operator Certification Exam Prep · Question
When installing a storm sewer pipe with a 300 mm diameter and a required slope of 0.5%, what is the minimum fall needed over a 50-metre section to ensure proper drainage?
To calculate the fall, multiply the length by the slope: 50 metres * 0.005 (0.5%) = 0.25 metres, which is 25 centimetres. This ensures adequate gravity flow for
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Question: When installing a storm sewer pipe with a 300 mm diameter and a required slope of 0.5%, what is the minimum fall needed over a 50-metre section to ensure proper drainage?
Answer options: ✅ 25 centimetres
- 50 centimetres
- 2.5 metres
- 5.0 metres
Correct answer: 25 centimetres
Explanation: To calculate the fall, multiply the length by the slope: 50 metres * 0.005 (0.5%) = 0.25 metres, which is 25 centimetres. This ensures adequate gravity flow for the pipe.
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