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What is the minimum value of free-board for Main and Branch Lined canals if the discharge is more than 10 cumecs as per specified by BIS code?

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+1 vote
in Irrigation Engineering by (75.2k points)
What is the minimum value of free-board for Main and Branch Lined canals if the discharge is more than 10 cumecs as per specified by BIS code?

(a) 0.60

(b) 0.50

(c) 0.75

(d) 0.30

The question was asked during an interview.

Asked question is from Channel Cross-sections topic in portion Lining of Irrigation Canals and its Economics of Irrigation Engineering

1 Answer

0 votes
by (106k points)
The correct choice is (c) 0.75

To explain: In main and branch canals for discharge more than 10 cumecs, the minimum value of freeboard is 0.75 m. For branch canals and distributaries in which discharge is less than 10 cumecs the value is 0.60 m.

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