topic Re: Beam and Column Intersection in Revit Structure Forum

Beam and Column Intersection

emanuela.agent — Fri, 04 May 2018 12:16:54 GMT

Hi,

I have the following issue: sometimes, when I draw a beam, Revit will leave a gap between the beam and the column, for no apparent reason. It doesn't always happen, even between the same type of column with the same type of beam. I tried redrawing the beam, playing around with the length, copying a beam that behaves well, but it still leaves the gap.

Any ideas on how to solve this or why it might happen?

Re: Beam and Column Intersection

erik_snell — Fri, 04 May 2018 18:02:44 GMT

This is called a “setback”. This is done for steel beams when there is a “join” made between a beam and an other element, like another beam, column or wall. These joins should be made between these element automatically. There is a way to turn off this join by right-clicking the blue-dot control at the end of a beam and selecting Disallow Join in the menu.

Re: Beam and Column Intersection

EdwinG — Fri, 04 May 2018 21:03:07 GMT

If you draw a beam that connects to another beam center this gap will appear, its called "Start Join Cutback" or "End Join Cutback" (depends wich end is joined), simply set this value to zero.

Re: Beam and Column Intersection

emanuela.agent — Mon, 07 May 2018 08:35:18 GMT

Thank you for your reply. The beams and columns I am using are concrete. I don't see an option for Join Cutback.

Re: Beam and Column Intersection

emanuela.agent — Mon, 07 May 2018 08:36:21 GMT

The beams I was working with are concrete, but the Disallow Join option did do it. Thank you!

Re: Beam and Column Intersection

brucehans — Sat, 01 Sep 2018 01:34:53 GMT

For cast-in place concrete, there will be no gap in the reality. The software seems not consistent with join conditions. Sometimes, the align tool can fix the problem.

Re: Beam and Column Intersection

erik_snell — Sat, 01 Sep 2018 01:50:10 GMT

There is a parameter in the family that controls this behavior. I don't have Revit running right now but I believe it is called Material for Behavior or something similar. For concrete, this should be set to concrete. Then the beams will join together so they look as they were poured at one time. The out-of-the-box content can be looked at for the correct behavior.

Re: Beam and Column Intersection

brucehans — Sat, 01 Sep 2018 02:14:15 GMT

You meant this? It's already been set to concrete, but still has same problem. According to what I found on here: https://knowledge.autodesk.com/support/revit-products/troubleshooting/caas/sfdcarticles/sfdcarticles/Structural-gap-between-beam-and-column.html. It said: If the structural material type of the beam is steel, concrete, precast concrete, or other, the gap is set to 1/2". It's been post on Feb 23 2007. If it's still true. maybe that's where the problem came from.

Re: Beam and Column Intersection

Anonymous — Tue, 25 Jun 2019 06:11:18 GMT

It's a view range issue. your looking the right beams but for columns instead of looking to lower columns your looking to the upper columns. Sometimes (not always) your columns in the upper levels get smaller, and because of that sometimes (not always) you see a gap between beams and columns. if you change your view range numbers it'll be OK.