Irrigation Engineering
As per Lacey’s theory, the silt factor is

inversely proportional to average par¬ticle size
not related to average particle size
directly proportional to square root of average particle size
directly proportional to average par¬ticle size

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Irrigation Engineering
Lane's weighted creep theory assumes

Triple weightage to vertical creep and one weightage to horizontal creep
Equal weightage to horizontal and vertical creeps
Triple weightage to horizontal creep and one weightage to vertical creep
Double weightage to horizontal creep and one weightage to vertical creep

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