Analyze the doubly reinforced rectangular beam. $[10$ pt$]$

$b=14$ in$.$

$d^{\text{'}}=2\mathrm{.}5$ in$.$

$h=30$ in$.$

$A_s^{\text{'}}=2x$#$9$

$A_s=5x$#$10($Assume the single layer of reinforcement$)$

Use $f_c^{\text{'}}=4000$ psi and $f_y=80$ksi.