+1 vote
in Irrigation Engineering by (75.2k points)
When the weight of the weir balances the uplift pressure caused by the head of water seeping below the weir, it is called as ____________

(a) gravity weir

(b) non-gravity weir

(c) vertical drop masonry weir

(d) concrete glacis weir

This question was addressed to me in a national level competition.

Question is from Diversion Head Works in division Diversion Head Works, Hydraulic Jump Usefulness in Irrigation Structure of Irrigation Engineering

1 Answer

0 votes
by (106k points)
Correct answer is (a) gravity weir

Explanation: In Gravity weir, the weight of the weir balances the uplift pressure caused by the seepage water. In non-gravity weirs, the weight of the concrete slab and the divide piers together keep the structure safe against the uplift.

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