When the weight of weir balances the up lift pressure caused by the head of the water seeping below the weir bed is called ___________________?
Correct answer: C. Gravity weir
- A. Cippollite weir
- B. Broad crested weir
- C. Gravity weir
- D. Non-gravity weir
Explanation
A gravity weir is designed so its own weight resists and balances the uplift pressure produced by seepage beneath the weir. A non-gravity weir requires structural reinforcement because its weight alone is insufficient.
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Practise Irrigation and Water Management
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