Cement concrete lining 15cm. thick or less for irrigation channels, using cement concrete 1:3:6 hand mixed concrete lining on side slopes for vertical height above 3.5m but u 5.5m.
Cement concrete lining 15cm. thick or less for irrigation channels, using cement concrete 1:3:6 hand mixed concrete lining on side slopes for vertical height above 3.5m but u 5.5m.