Abstract: Industry foundation classes (IFC) is the standard for BIM data storage, which defines all
kinds classes and objects for the whole life cycle of construction projects. In this paper, through the
example of a building element, IFC Beam, the representation of IFC-based building components
described in detail. In addition, the management of IFC-based building component, including element
creation, modification and deletion, is studied in detail. The research achievement can be utilized for the
construction of IFC-based component library.

Key words: industry foundation classes standard, building components, component library