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IFC import/export

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Nachricht 1 von 10
Anonymous
2103 Aufrufe, 9 Antworten

IFC import/export

Hello,

 

I am trying to export an IFC from a very simple model (for testing purpose) from Revit 2017. I want to test what is exported exactly in order to use it maybe for energy analysis outside of Revit. So I export an IFC 2x3 Coordination View 2.0, which seems to go well. It gives me a 6kb IFC file. Then I try to simply reimport in within Revit, and there, I got nothing. No error message, but it's like the IFC is empty...

I am not expert in the IFC formats, but from what I've read, the Coordination View 2.0 should at least contain the walls, roofs, etc.

 

So, what am I missing?

 

Attached is my rvt file used for export. It's just 2 small rooms.

 

I am able to open IFC files found on the web though..

 

Thanks a lot for any help,

Arnaud.

 

PS: Furthermore, I have download and installed the Autodesk app for IFC export. Doesn't seem to change anything.

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Nachricht 2 von 10
baniabdelwaheb1
als Antwort auf: Anonymous

Hi Cenaero,

Open the IFC file in a text editor 

And save it as .TXT with  ITF-8 encoding option.

 

Hope that helps,

Regards,

 

Abdelwaheb BANI

 

 

Nachricht 3 von 10
Anonymous
als Antwort auf: baniabdelwaheb1

Hello,

 

Thanks for the answer. I tried this. I guess you mean UTF-8 ?

I did that, and saved as ".ifc" (if I save as ".txt" I can't see it when I'im in the import IFC window of Revit). I still got nothing..

 

Attached is my ifc file. I zipped it because apparently this forum doesn't accept ".ifc" files as attachment (seriously..?).

 

Thanks,

Arnaud.

Nachricht 4 von 10
ryan
als Antwort auf: Anonymous

I saw, from the text file you were using QuantityTakeOffAddOnView, can you do just the default IFC2x3 Coordination View 2.0?  Not sure that will solve your issue.

 

FILE_DESCRIPTION(('ViewDefinition [CoordinationView_V2.0, QuantityTakeOffAddOnView]'),'2;1');

 

Also if you use 'export only element visible in view' and if the current view has nothing in it, nothing will be exported.

 

 

Nachricht 5 von 10
ryan
als Antwort auf: ryan

@Anonymous, I'm actually curious, what option, in the IFC Export UI, did you check to get the 'Quanity Take off view'?

 

Because I don't see that in my UI (Alternate UI 16.6.6.0.0)

 

Thanks.

Nachricht 6 von 10
Anonymous
als Antwort auf: ryan

Hello,

 

Thank you for your suggestion. I re-did the export, using the "classic" Coordination View 2.0, which shouldn't be limited to elements visible in view (but I made sure to export from a 3D view where all elements were visible). I still have the same problem.

Nachricht 7 von 10
ryan
als Antwort auf: Anonymous

I could help you, but don't have 2017.

Nachricht 8 von 10
Anonymous
als Antwort auf: ryan

@ryanI'm not sure anymore, but I think I used "In-session setup", and then checked the "Export base quantities" checkbox. Or one of these checkboxes :zwinkerndes_Gesicht:

Nachricht 9 von 10
Anonymous
als Antwort auf: Anonymous

Hi,

 

I found what was wrong. By default, in the IFC export Classes options, walls are... not exported instead of being exported to ifcWall. I find that quite surprising, but.. yeah.

Nachricht 10 von 10
ryan
als Antwort auf: Anonymous

Cool... If curious, I've used Jon Mirtsch's import class map before. https://github.com/jmirtsch/RevitIfcImportClassMap

 

 

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