Revit Link CAD loads xrefs of xref after relaunch

[Anonymous]

Hello guys,

I have a big problem with linking cad files. We are working with world coordinates and in CAD files we use xrefs from other departments. I managed to turn the xref layers in Revit off but after relaunch it loads xref of xrefs and layers are getting more and more. I can't delete xrefs from the dwg file.

Question: How can I exlude xrefs from a dwg? There is a fatal bug there. I switch layer of xref off but after relaunch of Revit I see new layers from Xref and because of that 33 km the model crashes.

Do you guys have any idea about it?

Thank you very much!

[ennujozlagam]

it could be your xref is attached with another xref? the best solution is to clean your autocad file as much as possible. bind all the xref's attached, move your autocad drawing file 0,0 select any corner probably between two gridlines hort.and vert. gridlines and then link into Revit. another way is to uncheck the layer you don't need see attached and see if helps. thanks

[Anonymous]

Thanks for reply. Like I said, I can't modify the CAD file because we have to work with world coordinates and other colleagues contionue to work on them. I assigned a layer to xref in dwg and turned it of. On first launch it was ok but after second launch Revit loaded xrefs of xrefs and there were many layers in V/G. That is a loop in API and it is a bug. There should be an option that you can exlude xrefs from cad file.

[ennujozlagam]

you wrote

There should be an option that you can exlude xrefs from cad file.

as far as i know there is no option at the moment, then in that case unload your xref's in autocad file since you said you change the later so you can turn it off? no point linking your autocad file with xref"s. thanks

[Anonymous]

Hi again,

I can't unload xrefs from dwg because other people are working on those files. They need xrefs in files. All xrefs have layer "0". I unchecked the layer "0" in Revit and it worked. But the problem is: I saved the model and opened it again and I saw that Revit loaded xref of xrefs and model crashes. Until today I copies from files what I needed and created new files. But as you can imagine I have to modify files if people change stuff in it. People have much things to do so they can forget to tell me that I refresh my file. If we are talking about collaboration and BIM, there might be some option about that.

Thanks 🙂

[RobDraw]

Take control of that file. Treat it like one from a consultant that gets updated periodically. Save it off to a different location and detach those XREFs and reference that cleaned up file. Then as changes happen update the file that you are referencing.

[Anonymous]

That is what I have been doing so far but I am not with that happy. In AutoCAD you can link a dwg without its xrefs but in Revit it fails.. I try to encourage my colleagues to use BIM but when I say "it is unfortanely in Revit not possible to link your file to my model, pls let me know when you change something" and you can imagine what they can think about it.. I don't get it what developers are doing instead of adding weird wall features...

Even the xrefs in dwg are xref'd as overlay, Revit fails at that stage..

[RobDraw]

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@Anonymous wrote:

I say "it is unfortanely in Revit not possible to link your file to my model, pls let me know when you change something" and you can imagine what they can think about it..

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Who cares what they think about it? If they can't wrap their head around the fact it doesn't work, that's their issue, not yours.

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@Anonymous wrote:

That is what I have been doing so far but I am not with that happy.

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When you are combining files from different platforms there are going to be issues. If this is the only one then you are lucky.

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@Anonymous wrote:

I try to encourage my colleagues to use BIM

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Revit in itself is not BIM. It is only a part of the process. AutoCAD can also be a part of the process.

[Mohamed-Nassar]

Use True Viw this solution from Autodesk to clean ur cad Files to be ready for Revit this is a point of view,

from my experience there is another opinion you handle it other teams to take a weekly package to clean it and work on it to develop you model as u can this task will repeat every weak and true view will help u in this also and it will help you to detect the changes from AutoCad before link the new package to ur model to continue

[syman2000]

Tell your consultant to change the AutoCAD XREF from Attachment to Overlay. This shouldn't load those XREF link into Revit. See screenshot

[Anonymous]

Hi,

thanks for help 🙂

All xrefs are linked as overlay. Can you please link another xref in your xref file and then in relaunch Revit or refresh links? It will load that xref from the first xref.

[Anonymous]

Hello Mohamed,

I haven't heard about TrueView. I will take a look. What do you mean with cleaning files with it? Is there a special function there?

[Mohamed-Nassar]

Yes it have the ability to purge and clean multiple file 

[syman2000]

I test it again and it works fine. I would love to see the screenshot of the CAD XREF list so I can take a look at what is the issue.

[Anonymous]

Many thanks for your efforts! 🙂

"Überlagerung" means overlay. I linked that file to a .rvt file, that contains all dwg's from others. It worked fine at the beginning. I saved the models and close the Revit. After I started Revit in Main model I saw that other dwg files are in it. The problem is closing Revit and starting it again.. There is definitely a bug there.

After relaunchBefore

[syman2000]

Can you expand the XREF tree so I want to see if you have multiple same nested XREF that attached to the file. Also try to remove XREF that is not found or unreferenced. If you don't do this, it create a mess in your XREF and cause some issues within Revit.

[Anonymous]

Here it is 🙂