The cross$-$section proposed for Beam AB from Problem $1$ is shown in the figure below.

Determine the following

a$.$ The effective flange width, $b_f,$ for the $T-$beam. Assume the clear span for the

beam,

$l_n=29ft$

b$.$ The moment capacity, Mn

c$.$ The resistance factor, $.$ Assume the depth to the extreme tension steel,

$d_t=27\mathrm{.}5$ in

d$.$ Based on the factored demand calculated in Problem $1,$ what recommendation

would you make regarding the suitability of this proposed cross$-$section?

$..4000,f_y=60$ksi