It is required to design a suitable economical Rolled Structural Steel UKB I section in S 275 grade steel for steel building. Figure 5 below shows the beam with loadings. The beam is laterally unrestrained, but restraints are provided at the point of application of loads by M secondary beams. Take reduction factor for permanent action (Dead load) = { = 1.00Suggest a suitable economic rolled structural steel UKB in S275 grade steel and design the beam completely for bending, shear, and shear buckling resistance check, deflection and Lateral Torsional Buckling Resistance. A W 164.3 kN u H Main Beam W 164.3 KN u L = 11000mm J W = 39.12 kN/m u B