UC – universal column or UB – universal beam. Universal columns are the most often used sections for structural steel purposes. Unlike a universal beamuniversal beamIn the United States, steel I-beams are commonly specified using the depth and weight of the beam. For example, a "W10x22" beam is approximately 10 in (254 mm) in depth (nominal height of the I-beam from the outer face of one flange to the outer face of the other flange) and weighs 22 lb/ft (33 kg/m).
› wiki › I-beamI-beam - Wikipedia, the UC's width is roughly equal to their depth.Sep 17, 2018