I'm going to lead this post with 'I have no idea what I'm doing on this one'.
Our normal workflows inhouse involve receiving a Revit model, or CAD file, inheriting coordinate systems from the primary consultant (usually the Architect for us), and then setting up our trade files based on that initial receipt of project files.
We picked up a project where the lead consultant is working in ArchiCAD and would like us to provide IFC files throughout the design process. We've since received an IFC export of their ArchiCAD file.
On linking the IFC file in, we started to notice that geometry-based tools were starting to act strange. Section tool resulted in section lines/arrows that were not visible despite V/G settings allowing them to be visible, linework would highlight IFC elements as if they were snapping to them but the snap point on screen would be displaced, and line styles on angled lines were zigzagging instead of showing properly.
I'm vaguely aware that Revit has difficulties handling geometries at extreme distances, so I decided to draw a large circle around the Revit origin in floor plan, link in the IFC again, and then zoom out until I could see both.
I couldn't. But I could highlight the IFC via a large window select, use the move tool to 'see' the bounding box, and work out the distance that way.
A wonderful 1245 miles away.
So. Is there anything that I can do on my end to reposition the IFC import into a more reasonable location without affecting the eventual IFC export back to the architect? Or does this need to be addressed via their initial exporting process?
Open the IFC in Revit and save it as RVT, then link that RVT in your model normally ( center to center, move to match etc).
Linking and repositioning per your directions (almost) works. I'm getting some weird graphics behaviors where zooming in/out is causing the linked model to shift around relative to the host model elements (a line aligned to a wall corner will look like it's now embedded in the wall at one zoom level, slightly in the room at a different zoom level, etc.)
The snap points on IFC elements is also still not matching the visual display, but I think that's related to the graphics mismatch that's occurring with the zoom levels.
Linking IFCs became way easier when we can directly link to base and survey points. That was the biggest issue on the projects at our studio.
Have a look on the article under that explains in a few steps how it can be done:
https://goto.archi/blog/post/how-to-link-ifc-files-directly-to-revit-base-point
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