The unbraced length is set to 0.0 if the user specifies in the Criteria / Flange Bracing command that both the top flange and the bottom flange are continuously braced.

If the user specifies either that the top flange or that the bottom flange (but not both) is continuously braced, the member is not assumed to be fully braced under axial load; RAM Frame does not consider continuous bracing of a single flange by itself sufficient to brace the member under axial loads.

Otherwise, the unbraced length is the distance between points where there is both a top flange physical brace point and a bottom flange physical brace point at the same location. If there are both top and bottom flange brace points but they do not coincide, the program uses the greater of the distance between top flange brace points and bottom flange brace points.