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Which of the following spillway is an improvement over free overflow spillway?

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+1 vote
in Irrigation Engineering by (75.2k points)
Which of the following spillway is an improvement over free overflow spillway?

(a) Straight drop spillway

(b) Open channel spillway

(c) Overflow spillway

(d) Siphon spillway

The question was posed to me in a job interview.

I need to ask this question from Ogee Spillway topic in section Spillways, Energy Dissipators and Spillway Gates of Irrigation Engineering

1 Answer

0 votes
by (106k points)
Correct option is (c) Overflow spillway

For explanation I would say: Ogee spillway is an improvement over free overflow spillway and is widely used with concrete, arch and buttress dam. The profile is made such that the shape of the lower nappe of a freely falling jet over a duly ventilated sharp-crested weir.

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