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_____________________ are suitable only for low...

_____________________ are suitable only for low spillways or weirs.

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+1 vote

asked Nov 16, 2023 in Irrigation Engineering by Carter (75.2k points)

_____________________ are suitable only for low spillways or weirs.

(a) Chute blocks

(b) Sloping aprons

(c) Baffle wall or friction blocks

(d) Roller buckets

I had been asked this question in an interview for internship.

Question is taken from Energy Dissipation Below Overflow Spillway topic in section Spillways, Energy Dissipators and Spillway Gates of Irrigation Engineering

irrigation engineering
spillways
energy dissipators and spillway gates
energy dissipation below overflow spillway

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1 Answer

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answered Jan 13 by Greg (106k points)

The correct option is (c) Baffle wall or friction blocks

To explain: Baffle piers or walls are blocks placed within the basin across the basin floor and they help in breaking the flow and dissipate the energy mostly by the impact. They generally give away under high-velocity jets due to their cavitation effects. It is unsuitable for large works.

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