Q$2.$ How much water must the pump supply when the $900$ mm pipe is $1\mathrm{.}31\frac{m^3}{s}$ and what is the pressure head at $A.$ Using the equstion :

$D=1\mathrm{.}626C^{-0\mathrm{.}38}{Q}^{0\mathrm{.}38}{S}^{-0\mathrm{.}205},Dinm$ and $Qin\frac{m^3}{s}$

$EL=24\mathrm{.}6m$

$c=1830m-500mm$

$\frac{1220(m)-400(mm)}{c}=130,\frac{t}{C},EL=12-2m$

A

$\{\begin{array}{ccc}\text{:}[2440m-600mm,& B,& 2440m-900mm]\\ & \text{P}\text{u}\text{m}\text{p},C=130,& C=120\end{array}-A=6L=6\mathrm{.}1m$