$7-1$ A $60-cm$ diameter $(24-in.)$ sewer is designed to carry a peak design flow of $0\mathrm{.}01\frac{m^3}{s}$ at

a slope of $0\mathrm{.}0008\frac{m}{m}.$ Calculate the actual depth of flow and velocity. Assume constant

value of $n=0\mathrm{.}015.$

$7-2$ Repeat Problem $1$ for variable value of $n.$ Assume $n=0\mathrm{.}015$ when the line is flowing full.

$7-3$ Calculate the depth of flow and velocity into the sewer line iv in the Design Example, at

average and minimum design flows. The diameter and slope of the line are given in Table

$7-6.$ The flow conditions are provided in Table $7-5.$ Assume $n=0\mathrm{.}015.$