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Design Of Non Erodible Channels  Cemented canals 

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The Initial dimensions of a channel are determined by uniform flow or manning formula. But final dimensions are determined on the basis of
Factors Considered In The Design:

U.s B.r > F = underroot cy F = Free Board In ft C=1.5 >20ctt Y = Depth in ft 2.5>3000cft Best section > Max Q for min p( wetted perimeter) Best Section Of Half Hydrogens, Trepazoid (formula) Underroot 3y power 2, 2underroot 3y , y/2 4/3 2y 3/2y 3/5 Rectangular 2y power 2 4y y/2 2y 2y 2.5 Desing Steps For Non Erodible Channel:
A = (b+zy) y 