Not Joinable

[revit1980]

Hello 

I applied coping for brace elements.It is okay.But why join command is not working?

Please help me how can join them?

Thanks in advance

[revit1980 · Accepted solution]

Hello 

I found the solution It occurs because of the cut back distance.

You need to modify the family, you will stretch the distance then load the family.It really works