$AB=BC=CD=4m,I=\frac{1}{12}bh3$

$b=$ width, $h=$ height

Yield strength $300$ MPa $,$ density $7850$ kg$/$m$3$

Width should be at least $15$ mm

Height should be more than $3^{**}$ width

For the beam problem given in previous slide;

a $-$ Solve the problem based on your strength background.

b $-$ By creating the optimization steps; construct the optimization problem that will give the minimum weight of the beam and withstand the given loading

c $-$ Solve the optimization problem by writing a computer code