What have been anyone's experiences in using the IFC file format in making multiple round trips between ArchiCad and Revit?
I roundtripped composite structures through IFC a year ago (AC12 and RS2009) and it was just working (it was pretty cool). The purpose was to see if an architect could use a "template model containing all pre-defined composites" for the architectural work and it was 100% as far as I tested (a typical villa).
The good thing about Graphisoft is that they actually can trim communication issues that may arise almost on the fly. Use your reseller if you encounter problems or have general question regarding IFC. The reseller channels directly to GSHQ.
From my Swedish point of view:
IMHO for the normal case roundtripping between Arch and Struct is not that relevant. Linking is the way to go since the models are so different in content, context and tempo.
The Graphisoft+Tekla cooperation have excellent means of collaborating process-wise and technically. ArchiCAD (that hosts both arch and struct if you want) can optimise the model before the export to Structural (very useful for both Tekla and Adesk). The ability of "Core only" plus filtering out only relevant ("archistructural") elements from ArchiCAD to struct gives a much better model for struct to use. Tekla then has a smart tool to easily compare IFC-model revisions (what's new, what's gone, what's changed etc.). I'm working on the process right now and will create example movies (swedish or english) for the nordic market. We have the greatest support from Tekla and they are a joy to work with!
AC 25 SWE Full
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