A steel member 8m long is to be used as a column. The member is fixed at both ends for bending about y-y axis and pinned at one end and fixed at the other for bending about x-x axis. The section properties are as follows: Oy = 350 MPa E = 210 GPa A = 2.29 x 10- m Ixx = 15.3 x 10-6 m4 lyy = 1.12 x 100 m Under these conditions calculate the following: 2.1 Determine the critical slenderness ratio. [15] [4] 2.2 Calculate the buckling stress according to Euler theory 2.3 Calculate the buckling stress according to Rankine and Gordon equation and the load producing this stress. [11]