A structural support is installed within a space craft. The support is made of 7075-T6 aluminum, plut T-ult =250 MPa and Sigma b-ult = 790 MPa and has the tubluar cross sections. The 2 bolts are made of AS14 structural steel.
A) Find the minimum required diameter of the bolt, to the nearest millimeter. If the temperature drops from 25c at launch to -150c during orbit.