IFC 4 Export: Georeferencing

When exporting in IFC 4.x format, the program saves the location set in the project's BIM parameters to the IFC file, so when using another IFC 4 compatible design program, the project contains the geolocation and can place it in the drawing area accordingly.

Definition from OpenGIS Abstract Specification, Topic 2: A coordinate reference system is a coordinate system which is related to the real world by a datum. The coordinate system is composed of a set of coordinate axes with specified units of measure. The datum specifies the relationship of a coordinate system to the earth. The resulting combination of coordinate system and datum is a coordinate reference system.

Details: https://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCoordinateReferenceSystem.htm

User-Guide-for-Geo-referencing-in-IFC-v2.0.pdf

Location: Fájl > Export > IFC > Coordinate reference system ID

Note: 

How can the user choose to export the geolocation as a survey point or a project base point?

Check the "Apply Coordinate System Worldwide" checkbox in the dialog. It means that IFC file is exported with the IfcProjectedCRS and IfcMapConversion nodes that describe the georeference. When this checkbox is unchecked it means the IFC file is exported only with project coordinates.