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IFC: Model contexts and subcontexts

1. J by jonganej on 6 Jan 2025, edited 8 Jan 2025 #

   Recently learned about the different contexts in IFC after stumbling across an unexpected issue on BonsaiBIM with the Duplex House model which I posted on the IfcOpenShell's GitHub issues page here: https://github.com/IfcOpenShell/IfcOpenShell/issues/5824

   Do most BIM Authoring tools (e.g. Revit, Archicad) allow for exporting these contexts? Are there any resources on this topic?

2. J by JanF on 6 Jan 2025, edited 6 Jan 2025 # +1 votes

   Revit

   • I haven't found any documentation for this

   • it exports detail elements as plan representation and 3d as model representation

   • I think this behaviour is hardcoded and there's no way to add for example a bounding box

   Archicad

   • I didn't look for documentation

   • archicad gdl has very similar concepts, so 2d script exports to plan and 3d script to model

   • I also think this is hardcoded, but there might be a way to export something more

3. T by theoryshaw on 6 Jan 2025 # +3 votes

   @Moult gave a nice explanation here, once.

4. J by jonganej on 8 Jan 2025 #

   Thank you all for the responses!

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