Question

What condition most affects the ability of a steel wide flange beam to resist global lateral torsional buckling

A: lateral bracing of the tension flange

B: Lateral bracing of the web

C:Moment of inertia

D:Lateral Bracing of the compression flange

Answer 1

The correct option is D .Lateral bracing of the compression flange

Explanation

lateral buckling of the compression flange is also accompanied by twisting ,when beam deflects laterally ,the applied moment exerts a torque about the deflected longitudinal axis, which causes the beam to twist.

Which can be avoided by many ways one of them is embedding the compression flange of the beam inside the slab concrete .When beam is fully embedded in concrete floor,the slab almost certainly furnishes full lateral support.

Above is one way to restain the compression flange