topic Re: Shear Connection between two channels in Revit Structure Forum

Shear Connection between two channels

advandes — Tue, 27 Nov 2018 15:35:13 GMT

Using Revit 2019

Does anyone know why I am getting errors trying to make a simple shear plate connection between two channels? See attached. These connections need to be coped and bolted with shear tabs. Pretty standard stuff.. Thanks for any help.

Re: Shear Connection between two channels

mihai.sandu — Wed, 28 Nov 2018 08:29:40 GMT

Hi,

When a steel connection is placed on a steel profile a fabrication shape is created, based on the steel profile from Revit. This fabrication shape can't be created in some cases. I believe that the fabrication shape is not created in your case because the medium and fine levels of detail, of the Revit native steel beam, are not "consistent".
Please see below information from Help Document.

"The shapes of connected elements for medium and fine detail levels must be consistent. Straight segments defined in medium detail level should overlap segments defined in fine detail level. If the shape for the medium detail level is not the same as for the fine detail level, the steel fabrication shape will not be created and you will be notified by a warning message."

Here is a link from the Revit Help Documentation which contains the Supported Structural Steel Shapes:

https://help.autodesk.com/view/RVT/2019/ENU/?guid=GUID-6244E741-5D14-4DAD-AE25-5069F71B69F3

Regards,

Re: Shear Connection between two channels

advandes — Wed, 28 Nov 2018 13:42:08 GMT

Thank you for your response. I am accepting your solution to the issue as a link to Autodesks documentation, but it appears there is no solution. Very disappointing...

Re: Shear Connection between two channels

andres_urrutia — Sat, 01 Dec 2018 12:48:10 GMT

did you créate that shape? you must clssify the member as a C-Shape…..

Re: Shear Connection between two channels

advandes — Sat, 01 Dec 2018 14:23:48 GMT

No, that is a standard channel from the framing library

Re: Shear Connection between two channels

Aaron485 — Tue, 02 Jul 2019 17:17:21 GMT

Was you ever able to get two channels to connect with a shear tab? I have tried several things and still haven't found a way.

Re: Shear Connection between two channels

advandes — Tue, 02 Jul 2019 17:36:18 GMT

No, I now use Advance Steel 2020 for projects that require detailed connections, and then import the file into Revit.

Re: Shear Connection between two channels

andres_urrutia — Tue, 02 Jul 2019 18:41:17 GMT

how do you import the AS file into Revit? as a xmls file or as a dwg file?

Re: Shear Connection between two channels

advandes — Tue, 02 Jul 2019 21:43:01 GMT

I have done it both way, but I usually export .smlx format from Advance Steel. The process isn't always perfect, but it seems to get the job done when I have to do it this way. Advance Steel is a bear to learn, but once you do, it's much easier to model steel than with Revit. The screen capture I have attached is a simple structural frame I am working on that I imported into Revit.

Re: Shear Connection between two channels

Aaron485 — Wed, 03 Jul 2019 13:01:19 GMT

I did get my channel to beam connection to work in Revit 2019, I just had to change the beams to be the family from the AISC 14.1 folder, then they connected right up.

Re: Shear Connection between two channels

meilechTPVL4 — Wed, 23 Aug 2023 15:22:08 GMT

Still an issue in revit 2024.

Shear connection from "C-Channel Family" to a column. The Fine and Medium profiles don't overlap the way they should for revit to recognize the shape

per https://help.autodesk.com/view/RVT/2018/ENU/?guid=GUID-6244E741-5D14-4DAD-AE25-5069F71B69F3

This is frustrating considering its an out of the box autodesk family.
can confirm @Aaron485 solution works but the shape is slightly different. It can be a workaround, but if you are calculating poundage based on the Area X Mass (volumeXdensity) which I do, it will throw off the numbers slightly.

It just depends what you are trying to do.

Re: Shear Connection between two channels

meilechTPVL4 — Wed, 23 Aug 2023 15:37:13 GMT

To make my point

the top beam is the AISC 14.1 shape

the bottom beam is the Deafult family.

Both are the exact same length

Re: Shear Connection between two channels

jasonmccool8686 — Thu, 19 Oct 2023 17:35:40 GMT

Well, I guess I can see why Revit doesn't know what to do with channel connections when the default out-of-the-box channel family comes in malformed like this... Good grief, Autodesk.

Re: Shear Connection between two channels

jasonmccool8686 — Thu, 19 Oct 2023 18:39:33 GMT

OK, apparently, it's not like that out of the box. Replacing the family when there was already a connection applied to the instance apparently caused the sloped surface of the flanges to flip like that. Deleting that whole channel and getting it back to an intact shape and then applying a cope to the members made the same thing happen again. Either way, really annoying. Does anyone know of a way to edit the family so it stops doing this, or is it a Steel Connections plugin error that corrupting the family?

Re: Shear Connection between two channels

BVillarreal1126 — Tue, 21 Nov 2023 17:13:57 GMT

I believe the Error lives deep within the parameters of the Profile not following in line with each other's shape.

Fine level - TF in conflictMed Level - TF in conflict

If you compare that to the MC family those profiles are correct.....

Someone at the Main office (AutoDesk/IMF/Mystery tech guy) must of overlooked this