QUESTION #$2$

For the section shown, assume cracking occurred and use the

transformed$-$area method $($transforming steel into equivalent concrete$)$

to compute the flexural stresses in concrete and steel at the applied

moment of $60$kip.$ft.$ Use modular ratio, $n=8(n=\frac{E_s}{E_c})$

Hint: $E_c=57000\sqrt[\phantom{2}]{f^{\text{'}}}{?}_c$