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The silt factor ‘f’ in Lacey’s regime theory for canal design is related to average particle diameter ‘d’ (in mm) by:

Af = 1.76 * sqrt(d)
Bf = 1.35 * (d)^(1/3)
Cf = 2.00 * sqrt(d)
Df = 0.75 * d

Explanation

Lacey’s silt factor formula is f = 1.76 * sqrt(d_mm), where d_mm is the average grain size in millimeters.

Submitted by: mcqstutor Team More Civil Engineering MCQs →

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