Revit cannot import some of the geometry (dwg import / link)

[jnoordzij]

Hi 

I could use some help from someone who has some experience in Revit as well as in Autocad.

I'm having trouble with importing (or linking) a DWG file into Revit. An error occurs "Revit cannot import some of the geometry". The resulting import instance is missing a face. 

I'm suspecting that the problem might be with the quality of the solid in Autocad, but not sure. 

(The Autocad geometry is indeed a solid.)

In Autocad I have tried to explode & rejoin, create a mesh, smoothen and unsmoothen the mesh, the 'solid clean' command , and save as Autocad 2007, but nothing helped. 

Could someone please have a look at this DWG, and see if they can 'repair' this somehow, or do something so that when imported (or linked) into Revit it is not missing its face?

Many thanks in advance!

autocadrevit

[Anonymous]

This is my result 

[Anonymous]

[L.Maas]

There are some issue when working with the dwg. When you start exploding you will see some problems. Some points seem to overlap.

You would have to work at this are to clean it up

I tried a different approach. I kept removing elements and exploding until I only had the outlines left.

Then imported the outline in a Revit family and created an extrusion based on the outline.

Now I have a native revit family which is much lighter on the project.

Hope this works for you

[Anonymous]

Hey, I have two options for you 

1. you can import the file as a conceptual mass and than draw over it for better detail (If you want to know how to do so let me know and i will show you or advice on how to do so)>

2. If you want to keep the file as it is import the file as an IFC instead of DWG OR DWF ; once in revit project Autocad layers will only be applicable for removal not adjustment or correction.

  I will suggest for next time keep geometry clean and duplicate layers on multiple projects for better project control.

[jnoordzij]

@Anonymous That's very interesting! Looks like you're not having the same problems I'm having. 

Did you get the warning message: "Revit cannot import some of the geometry"?

Did you not change anything to the dwg?

If not, then maybe the problem might be some hardware / software settings issue at my working station? Might you have any idea what might be causing this? 

*EDIT sorry i did not see your last reply yet. Let me first read that. 

Furthermore I am noticing that you are inside family environment. I was in project environment. Might this cause differences?

[jnoordzij]

@L.Maas thank you very much for the response.

I understand and like your idea about extruding the contours, but that does not fit within our workflow. The solid actually comes from a Civil3D surface that has been 'extruded downwards' to give it a thickness. This WATER solid happens to be completely flat, but some others might have some terrain height differences, so I can't just extrude the contour. 

Your findings considering the problems in the dwg are very interesting. I would LOVE it if I could find a way to quickly resolve those problems with some native Autocad commands. However I'm not very experienced in Autocad, so I don't know what to go for.

Do you think the dwg problems are only solvable through manual action?

[L.Maas]

I think it will be a manual action. Other option would be to look at Civil3D if you can solve it there

[jnoordzij]

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@Anonymous wrote:

Hey, I have two options for you 

1. you can import the file as a conceptual mass and than draw over it for better detail (If you want to know how to do so let me know and i will show you or advice on how to do so)>

2. If you want to keep the file as it is import the file as an IFC instead of DWG OR DWF ; once in revit project Autocad layers will only be applicable for removal not adjustment or correction.

  I will suggest for next time keep geometry clean and duplicate layers on multiple projects for better project control.

---

@Anonymous 

I tried if importing the CAD into a family environment made a difference, but I still got the error. 

I like your ideas but both have some potential drawbacks for me. 

1) Yes, please, if its not too much effort, please show me how to do so. However I am hoping for a fix to this problem that requires the absolute minimum of manual actions. If I would have to 'draw over' every solid that I want to import then it would be too much work. We are talking 20-50 solids on each update here, and some are very detailed. 

2) I like the IFC idea. However I am afraid that eventually I might run into the same problem. I want to perform some geometric Dynamo operations on these solids, (something very similar to what's described here) which would require me to 'explode' the IFC, and then I might still encounter the same problem, i.e. the geometry inside the IFC still being 'broken'. 

Please, could you elaborate on my previous questions to you? 

1 - Did you get the error message?

2 - Did you change anything to the dwg itself?

3 - If both no: how could that be possible, that we are having unsimilar experiences?

Many thanks!

[jnoordzij]

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@L.Maas wrote:

I think it will be a manual action. Other option would be to look at Civil3D if you can solve it there

---

Allright, even if it's going to be manual, then I'm still interested in how to do so. 

If I could limit the manual labor to only repairing a couple of broken solids inside Autocad, then it might be not too much effort to get a decent workflow going.  

@L.Maas  Could you please describe how I can manually fix this broken solid in Autocad?

Many thanks for your help!

[Anonymous]

I didn't run into the same issues.

[Anonymous]

Hey, @jnoordzij I haven't forgotten to make a video on how to fix it. I'm just caught up with work but i will soon make a video sometime this week.

[jnoordzij]

That's great. Looking forward to it. Thank you!

[jnoordzij]

@L.Maas I'm also still hoping for your suggestion on how to fix the solid within Autocad!

[Anonymous]

Part1: https://www.youtube.com/watch?v=QNmvXzWL5cI Part2: https://youtu.be/oTHO2Jffh6k

[Anonymous]

I made two YouTubee videos for you to follow and see if what i did was helpful. let me know if it helped, please.

[Anonymous]

what the hell was this part for ????