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Import/Export to other CAD/BIM formats (DWG/DXF, IFC, SketchUp, 3DS etc.), spreadsheets, databases etc.

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By agroni
So far while working with coordinate systems I was able to export an IFC file that has defined coordinates for the survey point (defined in the Project location in archicad). In the IFC, the distance of the components is also corresponding to the Survey Point. Perfect!

But there is a slight problem with the national elevation, that is connected to a national surveying datum. We have a file with defined coordinates: lat, lon and elevation as a reference for our project. This elevation is defined at 157,23m. I have defined the height 156,68m which is my ±0,00 ground floor. This means, the survey point has in its settings 55cm, to bring it higher than the project origin (156,68). Since I am exporting an IFC based on the survey point (not project origin) shouldn’t the height elevation in the IFC be 157,23m respectively the height of the survery point? In this case archicad exports the height elevation of my project origin.

One thing that comes to my mind solving this issue is definig the 157,23 in the project location, and to define the ±0,00 as another Reference height in archicad.
What I am doing wrong here?