Irrigation Engineering
For designing the venturi head,

Width of the throat should not be less than one-third of the bed width of main canal
Length of the throat should be 2.5 times the depth measured to F.S.L. in the main canal
Minimum throat width should not be less than 60 cm
All listed here

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

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