I hope this could help, didn't test it
http://cad-3d.blogspot.com/2011/08/ifco ... e-ifc.html
http://ifcopenshell.org/
ifcOpenShell : Open Source IFC Library/Framework & Geometry
ifcOpenShell : Open Source IFC Library/Framework & Geometry
I'll change my username to 'emagdalena' cause 'splineman' was an old nickname i used in es.comp.cad