QUESTION $5$

$5\mathrm{.}1$ A horizontal pipeline with a diameter of $90mm$ conveys water at $20\frac{l}{s}$ with a pressure Drop of $50$ kilopascal per $20m$ of pipeline.

Calculate the value of the coefficient of friction by using darcy formula.

$(4)$

Use chezy's formula to calculate each of the following for the scenario in QUESTION $5\mathrm{.}1$:

$5\mathrm{.}2\mathrm{.}1$ The hydraulic mean depth

$5\mathrm{.}2\mathrm{.}2$ The hydraulic gradient

$5\mathrm{.}2\mathrm{.}3$ The chezy coefficient

$(23)$

$(6)$

$[10]$