Problem $2-$ Rational Method $Q=$CIA $(25$ Points$)$

Given the attached topo map $($note the scale and provided "scale"$)$ and the following information and guidance:

a$)$ Design storm frequency is $25$ years.

b$)$ For the street, instead of Mannings, assume a gutter velocity of $1\mathrm{.}8f\frac{t}{s}$

c$)$ The residential development h and grassy area with a $C=0\mathrm{.}30$

d$)$ Developement is located in Intensity intensity and the ODOT time of

e$)$ Clearly mark the assumed trave of concentration equations$)$ using to make the time of concentration cain$-$water on

$1$ acre $=43,560f{t}^2$

What is the peak discharge $(Q_P)$ at the inlet?

What would happen to your $Q_p$ estimate if the street slope were increased?

$$ USE ODOT IDF $($INTESUST$\text{'}$ ZWUE C$)$

$$ USE $2\mathrm{.}57$R STR$2$M