Irrigation Engineering
According to Lacey, depth of scour in a river depends upon the straightness of the reach. If D is the depth of scour in regime flow in a right angled bend, it is

2.00 D
1.50 D
1.25 D
1.75 D

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Irrigation Engineering
Lane's weighted creep theory assumes

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

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