Consider a $80-$cm$-$diameter concrete pipe $)$ on a $1$:$300$ slope carrying water.

a$.$ The flow is uniform, and the depth is $40cm.$ Calculate:

i$.$ Flow rate

ii$.$ Froude Number

iii. Flow classification $($subcritical$,$ critical, or supercritical$)$

iv$.$ Slope classification $($mild$,$ steep, critical, adverse, or horizontal$)$

b$.$ Further downstream, there is an underflow gate that forces the depth of the water to lower

to $10cm$ in order to pass through. What type GVF curve $($profile$)$ best describes the surface

of water before and after the gate. $($draw a picture$).$