Disallow Join in AddBeam component

[Japhy]

Is this the Disallow join you are referring to?

Joining Ends of Beams via Rhino Inside Revit

Use the python component provided in the attached GH definition. The definition grabs the columns in model, creates beams with default type on the top end of the columns, and then uses the python component to join the ends of the beam: [Screen Shot 2020-07-20 at 16.28.29] beams.gh (13.0 KB)