A 700 mm diameter circular long column (Lu=6500mm) carries an axial load of PDL=3000kN and PLL=2400kN The column is part of a braced frame that is bend in a single curvature. The ratio of eccentricities at top and bottom of the column is 1.1 and the effective length factor k=0.85. Use f’c=35MPa, fy=420MPa, and assume the larger of the two end moments is greater than the minimum moment. CALCULATE THE CRITICAL AXIAL LOAD Pc IN KN.