The H-Factor

From a Customer: "Is there a way to set multiple floor elevations in 3D so the elevation tags and ceiling hts will be set correct from each floor elevation?"

Yes (you didn't expect me to say no, did you?). Using the Structure Elevations (TOS) command from the Steel toolbar (or Elevate ribbon panel) use the Floor Elevation button to specify this. You can even use it to compensate for those structures where the top of steel elevation is adjusted + or – for the joists