**Criteria for Buildings**

The AISC specification for ASD for buildings places a limit on compressive stress in webs to prevent local web yielding. For a rolled beam, bearing stiffeners are required at a concentrated load if the stress f _{ a } , ksi (MPa), at the toe of the web fillet exceeds F_{a}= 0.66F_{y}_{w} , where F_{y}_{w} is the minimum specified yield stress of the web steel, ksi (MPa). In the calculation of the stressed area, the load may be assumed distributed over the distance.

For a concentrated load applied at a distance larger than the depth of the beam from the end of the beam: