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
All listed here
Spaced at interval of 1½ times their heights
Of R.C.C. or steel plate 8 cm thick

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Irrigation Engineering
A divide wall is provided

At right angle to the axis of weir
At an inclination to the axis of weir
Parallel to the axis of weir and downstream of it
Parallel to the axis of weir and upstream of it

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