Question

Difference between laterally restrained and unrestrained beams

Answer 1

In steel beam design this is calledlateral torsional buckling. A beam that is supported only at the ends will easily buckle out sideways, or in other words, buckle laterally. ... A restrained beam is much stronger than anunrestrained beam since it can develop its full bending moment capacity.

Answer 2

The difference between laterally restrained and unrestrained beams is as follows:

• "To avoid the lateral buckling, restraints are provided to the beam in the compression flange, and hence beams are called *laterally restrained beams.

• On the other hand, "the beams supported only at the ends will easily buckle out sideways or we can say buckle laterally is called unrestrained beams".

• The restrained beams can develop it's full bending moment capacity because it is stronger than unrestrained beams.