Columns prevent perpendicular beams joining

[vicktor1111111]

Hi chaps, what's up, how are you doing. My problem is that when I join perpendicular beams as shown on the picture number 1 they remain unconnected because of the columns which support them on the corners. Strangely enough they become partly connected when I increase the gap between them and the column(picture number 2) and they become completely connected right after Revit says it cant keep column and the beam connected (picture number 3). This occurs when the gap reaches 1 1/2" (picture number 4). 

Could you please tell me how can I solve this problem? Thank you very much for your help.

[vicktor1111111]

Thank you very much again, I just would like to ask you either why unlike in walls, in beams I have to disallow join instead of allowing it so that they could have been joined?

[Anonymous]

You shouldn't have to unjoin the beams....that would be totally counterproductive to do that if you have a large project.

https://knowledge.autodesk.com/community/screencast/b418eeaf-6730-4fae-a48a-ab1e220821b6