Prob. $1.$ The same structure and loadings as in HW$9,$ Prob. $5\mathrm{.}4-11($see the figure below$).$ A

W$150$X$24$ wide$-$flange beam was used $($See Table D$.2$ for properties of the cross section$).$

$($a$)$ Sketch shear force and bending moment diagrams and find the maximum moment.

$($b$)$ Determine the maximum flexural stress in the beam.