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

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Irrigation Engineering
A river is said to be of

Aggrading type if it builds up its bed to a certain slope
All of these
Degrading type if it cuts its bed to a certain slope
Meandering type if it flows in sinuous curve

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