As of the 2013.b version, the export to IFC format (Industry Foundation Classes) includes the forms of joist floor slabs and lattice reinforcement of reinforced joists. These elements are not visible in the 3D view generated by CYPECAD but are exported to IFC in any of the four available formats (IFC 2x3, Archicad IFC 2x3, Revit IFC 2x3, Allplan IFC 2x3).
