(Solved): Problem 3 (Bending stress) Draw the shear and bending-moment diagrams for the beam and loading show ...

Problem 3 (Bending stress) Draw the shear and bending-moment diagrams for the beam and loading shown and determine the maximum normal stress due bending. The geometry of the cross-section of the beam is given. (Hint: Choose the maximum $\mathrm{M}$ value in the M-diagram, then calculate the maximum normal stress using the maximum $\mathrm{M}$ value). $\begin{array}{l}d=210\mathrm{mm}\\ b_f=134\mathrm{mm}\\ t_f=10.2\mathrm{mm}\\ t_w=6.35\mathrm{mm}\end{array}$ Note: The bottom and top flanges have the same thickness and width.