What is the minimum value of free-board for Main and Branch Lined cana – McqOptions

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1.	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
Answer» D. 0.30

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