$7\mathrm{.}2.$ Design a pumping main for the data in Table $7\mathrm{.}6.$ The pipe cost parameters are $m=$

$0\mathrm{.}9$ and $k_m=500$ units. Use $\frac{k_T}{k_m}=0\mathrm{.}02$ units and terminal head as $5$ m $.$ The pipe

roughness height is $0\mathrm{.}25$ mm $.$ Calculate pipe diameters, pumping head, and cost of

the system.

TABLE $7\mathrm{.}5.$ Data for Gravity$-$Sustained Water Distribution Main

TABLE $7\mathrm{.}6.$ Data for Pumping Distribution Main