![MAIN BEAM BUILT UP 1 MAIN BEAM BUILT UP](https://excel.civilmdc.com/wp-content/uploads/2021/10/MAIN-BEAM-BUILT-UP.png)
an element of framed structures consisting of individual angle irons, channels, I-beams, and similar simple metal sections joined into a single unit by batten plates or lattices. Built-up beams are chiefly used asĀ structural elements under compression, such as columns or chord members under compression in trusses.