topic Re: Attach Column to a 2 sloop floor in Revit Structure Forum

Attach Column to a 2 sloop floor

freitas_Goncalo1994 — Thu, 24 Apr 2025 00:35:43 GMT

Can't seem to attach properly a column to a two slope ceiling. If i do a normal attach to top i get image "Problem 1", if i create a reference plan and attach to top using that reference plan i get the images "Problem 2" and "Problem 3". Help would be highly apreciated

Re: Attach Column to a 2 sloop floor

jay_colc — Thu, 24 Apr 2025 09:29:24 GMT

Try selecting the Column > Contextual Toolbar > Attach Top/Base > Maximin Intersection when picking the options in the Option Bar

Re: Attach Column to a 2 sloop floor

freitas_Goncalo1994 — Thu, 24 Apr 2025 11:28:36 GMT

Maybe im doing it wrong, but i dont get the same result.

What i did:

1 - Select Column (Picture 1)

2 - Toolbox -> Attach Top (with maximum interseption) (Picture 2)

3 - Press on the floor to attach. The problem is that i dont get the same result has you did, i just get the result showing on Picture 3.

Re: Attach Column to a 2 sloop floor

jay_colc — Thu, 24 Apr 2025 11:48:41 GMT

Are you using floors for the Sloped Roof elements or Foundation Slabs?

I have used a Floor as per your post Title.

Re: Attach Column to a 2 sloop floor

freitas_Goncalo1994 — Thu, 24 Apr 2025 14:01:03 GMT

Im using floor from the Structure tab.

For the slope i did creating a line and giving the height of the points and line.

Re: Attach Column to a 2 sloop floor

jay_colc — Thu, 24 Apr 2025 14:53:23 GMT

I cannot repeat using Revit 2025.5 using the exact same process, can you share the model?

Re: Attach Column to a 2 sloop floor

freitas_Goncalo1994 — Thu, 24 Apr 2025 15:30:40 GMT

Sure, thank you so much.

Another question I have is that i imported some AutoCad files and im unable to delete or find one (Piso -2 (2)), you think you can tell me how I delete it?

Re: Attach Column to a 2 sloop floor

jay_colc — Thu, 24 Apr 2025 16:13:12 GMT

It's not the best model as the lines and not truly vertical and planar so you have small offsets and errors causing the problem as it cannot cut correctly (as below)

you need to review why these lines are not truly Vertical and Horizontal as this will only cause more errors later especially if you are looking to esport to analytical programs.

Making sure the Roof Covers the Column to allow it to be cut

This Grid is Vertical in comparison to the Roof Edge

Again to show it does work in your model with the correct alignment I created the same example where the roof covers the Column so it can be cut to the underside and it works as expected.

As regards the CAD drawings, If you linked it (which is the correct method), go to Manage tab --> Manage Links --> CAD Formats and Remove the link.

If you inserted the CAD file directly then this gets more complicated, go to Manage tab --> Purge Unused, click Select None, then scroll down to where you see the name of the file. If it's not being used in the project, you'll be able to see it here. Just check the box next to it and click OK.

If you don't see it there, then there's still an instance of it somewhere in your project, and you'll have to hunt it down and easy way is a 3D View with everything turned on window Select everything then use the Filter Tool to pinpoint the item