I made a design on RAM but used the wrong beams sizes of 26 ft rather than 24 is there any way I can change all of the existing beams to a different size without starting over? Thank you!
If you want to physically shorten the beams you'll need to modify the geometry, i.e. move a grid line or the supports. If you want to use a shorter unbraced length you can add brace points in Modeler, or for frame beams you can directly override the unbraced length using Assign Beam - Unbraced Length... (in Steel mode)