$4\mathrm{.}4\mathrm{.}5.$ The water distribution system for an industrial park is schematically depicted in Figure P$4\mathrm{.}4\mathrm{.}5.$

Water enters the system at junction A from a storage tank $($water surface elevation of $355\mathrm{.}0m).$

The demands on the system are currently at junctions $D(0\mathrm{.}550\frac{m^3}{s})$ and $E(0\mathrm{.}450\frac{m^3}{s}).$ All

pipes are concrete $(e=0\mathrm{.}36mm)$ with lengths and diameters provided in the table below. In

addition, the elevations of the junctions are given in the table below. Calculate the flow rate in

each pipe $($initial estimated flows are provided$).$ Also determine if the pressure at each junction

exceeds $170$kPa, a requirement of the water company by the industrial park. Assume complete

turbulence for friction factors $(f)$ and go through two solution $($flow correction$)$ iterations for

each loop.

Figure P$4\mathrm{.}4\mathrm{.}5$

$4\mathrm{.}4\mathrm{.}6.$ Solve Problem $4\mathrm{.}4\mathrm{.}5$ using the Hazen$-$Williams equation instead of the Darcy$-$Weisbach for fric$-$

tion losses. Let $C_{HW}=120$ for the concrete pipes.

Just do $4\mathrm{.}4\mathrm{.}6$ completely and thoroughly please.