Pipe EB: Elv. $E=498\mathrm{.}43ft$; Elv. $B=495\mathrm{.}55$ Length of pipe $EB=450ft$

Answer the following questions for a rainfall event with a return period $T=5-$yrs:

The maximum rainfall intensity $($III cachtment$)$ i in in$/$hr is:

a$)2\mathrm{.}5$;

b$)5\mathrm{.}2$ ;

c$)4\mathrm{.}3$ ;

d$)3\mathrm{.}5$

The peak flow $Qp($in cfs$)$ using rational method formula from Area III into inlet $E$ is:

a$)5*5$;

b$)10\mathrm{.}3$ ;

c$)15\mathrm{.}2$ ;

d$)75\mathrm{.}5$

The required diameter of sewer pipe EB $($in inches$)$ to handle peak flow $Qp$ is

$($assume $n=0\mathrm{.}015)$:

a$)15\mathrm{.}2$;

b$)32\mathrm{.}6$ ;

c$)25\mathrm{.}8$ ;

d$)20\mathrm{.}5$