Opening ifc file places objects in the wrong location on the plan

[Jakob_Floyd]

Good day,

I have started a new project and I was sent 2 ifc files:

A - with the building

B - with cable trays

When I start a new project in AC26 and hotlink both files, the location of objects do not match. I have contacted the manager of the project and he told me that it was supposed to be like that and gave me X and Y coordinates for how much to move file B so that the objects would align.

The problem is that those numbers do not work. And if I open those two files in the Open IFC viewer or BIMvision then I can see that cable trays are next to the building. But in AC cable trays are moved down and to the side.

I really hope that someone could tell me why AC is importing those files differently from other software.

Best wishes,

Jakob

[Laszlo Nagy]

Are you importing the two IFC files with the same IFC Translator?

In the IFC Translator's Import settings, if you go to the Geometry Conversion Dialog, you will see the "Match Archicad Project Origin with" field. This may be different in different IFC Translators, which may cause models to be imported to differing positions.

[Jakob_Floyd]

The solution that worked for me was to open new AC project and to go to File -> Interoperability -> Merge -> Merge from File and select the needed ifc file. It would merge at the correct coordinates and correct rotation.

Then I would go to File -> Save as and choose to save it as ifc file. And this newly saved file would attach as hotlink correctly.

I do not know what causes this, but my guess would be that it has something to do with export settings in Revit.

Hopefully this will help to someone else in the future.

[Laszlo Nagy · Accepted solution]

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@Jakob_Floyd wrote:

The solution that worked for me was to open new AC project and to go to File -> Interoperability -> Merge -> Merge from File and select the needed ifc file. It would merge at the correct coordinates and correct rotation.

Then I would go to File -> Save as and choose to save it as ifc file. And this newly saved file would attach as hotlink correctly.

Or, in that case, you could just take the PLN containing the IFC geometry and place it as Hotlinked Module, saving an extra step.

[Jakob_Floyd]

Ooh, I did not realize that I can use pln file as hotlink - silly me! 🙈 Thank you!