A load-bearing beam is intended to do the job of a load-bearing wall without taking up as much space. It can be made out of steel or concrete, though wood is the most commonly used material.

While most bearings are made of metal—typically steel, copper alloy or aluminum ... Plain bearings are highly customizable and have a high load-bearing capacity. While most are metal-made ...

In a wonderful film by the prolific Jam Handy Organization in the 1940’s, we take a scientific look at how shape affects the load bearing capacity of a beam. A single sided piece of metal ...