Problem #$3$: Refer to the simply supported beam and your solutions in Problem #$1.$

Find: $(15$ pts$)$ The cross$-$sectional dimensions for the preliminary design of a concrete beam for

the simply supported beam in problem #$1$ given:

$$ Grade $40$ Rebar

$$ Fc$=5000$ psi

Cy$=-7\mathrm{.}7$kn

Ay$=9\mathrm{.}7$kn

Ax$=9$kn

Vmax$=10$kn

Mmax$=38\mathrm{.}8$Kn$.$m