IFCProjectSave PDFSave selected topicSave selected topic and subtopicsSave all topicsShareShare to emailCopy topic URLLast UpdatedSep 22, 20261 minute readEngineeringE3D DesignUnified EngineeringE3D Design (Unified Engineering) The unique IfcProject Instance cannot be configured – default attributes are used. Related LinksMapping Attributes and Containment of Spatial Elements