Outside diameter $=400mm$

Wall thickness $=11,8$ mm

$Q=0,088058m^3/$s

Manning $n=0\mathrm{.}012$

Circular pipe flowing more than half full. Flowing a $75\%$ full.

Calculate the following $($detaled calculation$)$:

Water depth

Wetted perimeter

Hydraculic radius

Slope

Velocity $($m$/$s$)$

Prowide an overview as to whether the diameter is sufficient to provide selt$-$cleansing velocity and slope.