Selecting the Assign-Beam-Reduced Beam Section command causes the Assign Reduced Beam Section dialog box to be displayed. From this dialog the engineer can specify on a beam-by-beam basis whether to apply the reduced beam section (RBS) properties to the section. The reduced beam properties assigned to the section are those specified in the Criteria-Reduced Beam Section dialog. By selecting "clear reduced beam section" the engineer can remove the application of the RBS from any beam. This command is only applicable to steel, I-section beams.

After the appropriate values are specified the engineer can assign the criteria to a single member (click on Single) or to multiple members (click on Fence). If Single is clicked the dialog will close and a target cursor will be made available. Click on each steel I-section to apply the criteria to. If Fence is clicked the dialog will close and a fence cursor will be made available. Click and drag a rectangle around all the sections to apply the criteria to. Note that the criteria are only assigned to the steel I-beams. To return to the dialog to select a different effective length criteria click on the right mouse button.

To view which beams have a reduced beam section applied, select RBS from the beam tab in the View-Members Dialog.