IfcRelFillsElement is an objectified relationship between an opening element and an element that fills (or partially fills) the opening element. It is an one-to-one relationship.
As shown in Figure 22.214.171.124.A, the insertion of a door into a wall is represented by two separate relationships. First the door opening is created within the wall by IfcWall <-- IfcRelVoidsElement --> IfcOpeningElement, then the door is inserted within the opening by IfcOpeningElement <-- IfcRelFillsElement --> IfcDoor. The red mark in the figure indicates that there shall be no IfcRelContainedInSpatialStructure relationship that connects the opening to the spatial container of the wall.
Assignment of a globally unique identifier within the entire software world.
Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object,
Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule.
Optional description, provided for exchanging informative comments.
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Opening Element being filled by virtue of this relationship.
Reference to element that occupies fully or partially the associated opening.
Ownership, history, and merge state is captured using IfcOwnerHistory.
IfcRoot assigns the globally unique ID. In addition it may provide for a name and a description about the concept.
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ENTITY IfcRelFillsElement SUBTYPE OF (IfcRelConnects); RelatingOpeningElement : IfcOpeningElement; RelatedBuildingElement : IfcElement; END_ENTITY;