by John Flanagan
The Beam/Column Join Tool
Click Modify tab > Edit Geometry panel > (Beam/Column Joins)
The Beam/Column join tool adjusts how beams and columns frame into one another. By default, a longer beam is cut back from a shorter beam. You use this tool to adjust cutback for beams and columns.
Adjust Cutback Geometry at End Joins
There are 2 types of beam end joins: square-off and mitre. Use the Beam/Column Joins tool to adjust both by removing or applying the visible cutback of the beams.
If two co-planar beams of the same family and type without cross-sectional rotation in a join are not cutback, the join becomes a mitre join as illustrated.