A short $280100-mm$ column supports the three axial loads as shown in the figure below. Given:

$a=280mm$

$b=100mm$

$h=150mm$

$P_1=40KN$

$P_2=55KN$

$P_3=15KN$

Modulus $of$ elasticity $=45$GPa

Shear Modulus $=8$GPa

Assuming that the section remains plane, Answer the following:

The stress at point $"$B$"=$ MPa $[$with appropriate sign$]$

$$

One possible correct answer is: $-10\mathrm{.}893$

The stress at point $"$D$"=$ MPa $[$with appropriate sign$]$

$$

One possible correct answer is: $1\mathrm{.}429$

The stress at point $"$E$"=$ MPa $[$with appropriate sign$]$

$$

One possible correct answer is: $4\mathrm{.}643$