Reference levels

[mukster]

Using Archicad 24 on a MAC platform. Having a real difficulty resetting the reference levels. Going to Options>Project Preferences>Project location, resetting altitude, and it does nothing.

[Dali_]

Hi Musker.  I think that you are looking in the wrong place.  The 'Altitude' setting in Project Location does not alter the levels of the model.  There is: Options>Project Preferences>Reference Levels, BUT, this is only a "display and input aid".  

What I think you require is the following:  Design>Story Settings.  

This actually alters the levels of the CAD model, where everything that that is placed in the floor plan or elevation is referenced from 'Project Zero'.   See screenshot attached.