500x150

Their cross-sectional dimensions are represented by the web height (h) x web thickness (d) in millimeters. For example, an I-beam with a web height of 160mm, flange width of 88mm, and web thickness of 6mm is denoted as “I-160x88x6.”. Another way to mark I-beams is by using their web height in centimeters, such as I-16#. skubidubidu film