The rainfall intensities $(\frac{L}{s}\frac{?}{ha})$ of $10,15$ and $30$ minutes duration calculated from the frequency

analysis of the annual heaviest showers observed at a meteorological station in the period $1940-2000$

are given in the following table. Plot the rainfall intensity$-$duration$-$frequency relation in the form:

$I=\frac{**T^{2\mathrm{.}5}}{t^b}$

and find the constants $$ and $b$ for the following $2$ rainfall events.

HINT: Use Microsoft Excel and the Power Function to fit data and write the fitted equation to find the

constants. $($If $t$ is written in minutes and $T$ in years, I is expressed in units of $\frac{L}{s}\frac{?}{ha}.)$As the responsible engineer in charge, you are asked to design the bay crossing pipe line from

$$kuyular to Bostanl for the $$zmir Bay Crossing Project for Wastewater$.$ Write down all control

factors to be considered for a pumped sewer system