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About model and data exchange with 3rd party solutions: Revit, Solibri, dRofus, Bluebeam, structural analysis solutions, and IFC, BCF and DXF/DWG-based exchange, etc.

Exporting all representations of an IfcStairFlight (not only Brep)

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Hi everyone,

I am trying to export from Archicad to IFC2x3 a building containing stairs.

Problem is that the exported file contains only the Brep "Body" representation for each IfcStairFlight object, while the IFC documentation on the buildingSMART website mentions 3 different representations: Body (3D Brep defining the shape), Boundary (2D closed curve enclosing the footprint), and WalkingLine (2D open curve defining the walking line). And I really need these 3 representations (at least the Boundary would be great).

I tried to play with the "Data Conversion for IFC Export" dialog box but haven't been able to export these representations as well.

Any help would be very much appreciated!
Daniel Kovacs
Graphisoft Alumni
Graphisoft Alumni

I looked into this, and it seems like this is just something that has not been developed yet. It is definitely on our to-do list though (task #258727).

Unfortunately I can't think of any way to export a 2D representation of the stair tot IFC. If you find a way, I would very much like to hear about it.

Kind Regards,
Daniel Alexander Kovacs

Professional Services Consultant


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