To Define Attributes for IfcBuilding

1. Open the drawing that you want to export as an IFC file.
2. On the command line, enter ifcresourceassign.
3. In the IFC Resource and Assignment dialog box, click IfcBuilding tab.
4. On the left pane of the dialog box, select Building node.
   
5. On the right pane, edit the definitions of the selected property set.
6. Click Apply.
7. Click OK.