FIGURE P$5\mathrm{.}5-4$

$5\mathrm{.}5-5$ The beam shown in Figure P$5\mathrm{.}5-5$ is a two$-$span beam with a pin $($hinge$)$ in the center of the left span, making the beam statically determinate. There is continuous lateral support. The concentrated loads are service live loads. Determine whether a W$1860$ of A$992$ steel is adequate.

a$.$ Use LRFD$.$

b$.$ Use ASD.