Queston$1$: A column has a fixed end and the other end is free and unsupported. The column length is $8$ feet long. The beam cross$-$section is a square tube with outer dimensions of $4$ by $4$ inches. The area of the cross$-$section is calculated to be $3\mathrm{.}54i{n}^2$ and its smallest area moment of inertia is $8i{n}^4.$ Determine the maximum compressive stress when the beam is supporting $31100lbs.$ at an eccentricity of $0\mathrm{.}75$ inches off the beam axis.

Dania ShriD Chree. $1939217$

Question$3$: A certain force $F$ applied at $D$ near the end of the $15-$in lever shown in Fig. This bar $(OABC)$ is of AIST $1035$ steel. yield strength of $85k.$ Find the force $F$ required $6$ intitiste concks using Jistortion energy theory if the factor of safetve $1\mathrm{.}3?$

given

Salty Cbation $=1\mathrm{.}3$

Alsilozs steel.

$-y_S=85$kFo