Irrigation Engineering
To control the silt entry into a distributary at head regulator, King's vanes are provided which are the walls

Of height ⅓rd to ¼th the depth of water in the main canal
Of R.C.C. or steel plate 8 cm thick
All listed here
Spaced at interval of 1½ times their heights

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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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