Selecting View - Show Web Openings or clicking the button will toggle display of the 'web opening graphics' on beams with web openings at the locations of the web openings. The web opening graphics can be any of the following:

Stiffeners are displayed parallel to the beam's centerline axis. Rectangular and circular web openings can be displayed with zero (0), one (1) or two (2) pairs of stiffeners (when stiffeners are called for, a stiffener plate is required both above and below the opening).