Steps for solving The horizontal pipe network as shown below is being fed in at reservoir $R$ and drawn off at $A,B,C$ and $D.$ Using Hazen Williams formula $V=0\mathrm{.}85C{R}^{0\mathrm{.}63}{S}^{0\mathrm{.}54}$ with $C=100,$ determine the flows in the pipe network by Hardy$-$Cross Method. Assume initial value of flow in pipe $AB$ as $130\frac{l}{s}$ from $A$ to $B.$

Note: You need to compute only $2$ trials.

$($Ans: $Q_{AB}=\frac{136\mathrm{.}6}{s},Q_{BC}=31\mathrm{.}6\frac{L}{s}($:$Q_{CD}=\frac{38\mathrm{.}5}{s},Q_{DA}=143\mathrm{.}5\frac{L}{s}\}$

Fig $2$