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If H and d are the water depth and drop in the bed level at a Sarda fall, the width B of the trapezoidal crest, is given by

If H and d are the water depth and drop in the bed level at a Sarda fall, the width B of the trapezoidal crest, is given by Correct Answer $${\text{B}} = 0.55\sqrt {{\text{H}} + {\text{d}}} $$

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