The composite beam shown in the Figure 3 is simply supported and carr…

Question

The composite beam shown in the Figure 3 is simply supported and carries a total uniform load of $50\text{ kN/m}$ on a span of $4.0\text{ m}$. The beam is built of a wood member having cross sectional dimensions $150\text{ mm} \times 250\text{ mm}$ and two steel plates of cross sectional dimensions $150\text{ mm} \times 50\text{ mm}$. Determine the maximum stresses in steel and wood respectively. If the moduli of elasticity are $E_s = 209\text{ GPa}$ and $E_w = 11\text{ GPa}$ (Disregard the weight of the beam).