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