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By how many factors the design of protection works is based?

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in Irrigation Engineering by (75.2k points)
By how many factors the design of protection works is based?

(a) 4

(b) 2

(c) 1

(d) 6

I got this question in an online quiz.

My question is based upon Design of Modern Weirs and Barrages topic in chapter Seepage Theories and Weirs and Barrages Design of Irrigation Engineering

1 Answer

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by (106k points)
Correct answer is (b) 2

Explanation: The protection works are needed both on the upstream and downstream side to prevent the scour hole which is travelling close to the pucca floor of the weir and to relieve the uplift pressure. So, in order to achieve this, the protection arrangement consists of an inverted filter and launching apron.

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