IFC Properties are additional (mostly IFC Type-specific) parameters assigned to an IFC Entity. IFC Properties can be either standard, so-called “IFC 2x3 scheme” data (which are defined by buildingSMART and stored in property sets whose names begin with the prefix “Pset_”); or they can be non-standard, which are created by the exporting application using any property name and stored in any property set (the names of these property sets usually contain the name of the exporting application), or the IFC model view definition required for the property.
Examples:
•The ARCHICAD Element Schedule Fields (Properties and Parameters) can be automatically exported from an ARCHICAD model as IFC Properties and/or IFC Quantities with IFC export.
See Export Options.
•IFC Property and Attribute values can be set automatically from ARCHICAD properties, parameters, quantities and Library Part parameters by using mapping rules defined by the current scheme. In this case, the IFC data will be exported with its rule-defined name. In the IFC Manager and in Element Settings dialog boxes, these values are shown with a lock icon (indicating that they have been mapped). However, their value can be modified at the element level as needed.
See IFC Scheme Setup.
Some properties are mapped and are not editable (their properties are shown in gray), because there is a 1-to-1 mapping relationship with ARCHICAD parameters. Examples: the “Renovation Status” (same as the Renovation Status in ARCHICAD); the “LoadBearing” (same as Structural Function in ARCHICAD); and the “IsExternal” (same as ARCHICAD Position Category items).