The girder is basically a beam that supports other small beams and serves as the main horizontal supports of a structure. Unlike beams, the girder is designed to support major concentric loads such as columns or beam reactions, and their load carrying capacity is much higher than that of beams.

It can be made from various building materials such as concrete, stainless steel, or a combination of both. It supports vertical loads & may consist of a single piece or multiple pieces.