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Question
In case of a trapezoidal notch fall
Options:
A .  top width of the notch is kept between 3/4 th of full water depth above the sill of the notch
B .  top length of the piers should not be less than their thickness
C .  splay up stream from the notch section is 45°
D .  all the above.
Answer: Option D
Answer: (d).all the above.

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