# DESIGN OF CANAL USING LACEY METHOD

## LACEY’S SILT FACTOR,f

=\LARGE1.76\sqrt(d_{mm})

## FLOW VELOCITY,v

=\LARGE(\frac{Qf^2}{140})^\frac{1}{6}

## HYDRAULIC RADIUS,R

=\LARGE\frac{5v^2}{2f}

## WETTED PERIMETER,P

=\LARGE4.75\sqrt(Q)

## BED SLOPE

=\LARGE\frac{f^\frac{5}{3}}{3340Q^\frac{1}{6}}