IfcRelConnectsWithRealizingElements

Natural language names
Verbindet Elemente mit Befestigungen - Relation
Rel Connects With Realizing Elements
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4
    IfcRelConnectsWithRealizingElements
      OwnerHistoryMODIFIEDInstantiation changed to OPTIONAL.
Semantic definitions at the entity
Entity definition

IfcRelConnectsWithRealizingElements defines a generic relationship that is made between two elements that require the realization of that relationship by means of further realizing elements.

An IfcRelConnectsWithRealizingElements is a specialization of IfcRelConnectsElement where the connecting operation has the additional attribute of (one or many) realizing elements that may be used to realize or further qualify the relationship. It is defined as a ternary relationship.

EXAMPLE  It may be used to describe the attachment of one element to another where the attachment is realized by a 'fixing' element such as a bracket. It may also be used to describe the mounting of one element onto another such as the requirement for the mounting major plant items onto builders work bases and/or anti-vibration isolators.
HISTORY  New entity in IFC2x2.
NOTE  Regarding bridge prestressing, the tendon conduits and the tendon anchors are aggregated into the concrete elements, but not always the tendon itself (as the tendon may pass through several elements). Therefore, it is good practise to use RelConnects relationships between the tendon and the tendon conduits and the tendon anchors.

The connection types for bridges include:

Attribute definitions
#AttributeTypeCardinalityDescription G
8RealizingElementsIfcElementS[1:?] Defines the elements that realize a connection relationship.X
9ConnectionTypeIfcLabel? The type of the connection given for informal purposes, it may include labels, like 'joint', 'rigid joint', 'flexible joint', etc.X
Inherited definitions from supertypes
Entity inheritance IfcRelConnectsElements IfcRelConnects IfcRelationship IfcRoot
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcRoot
1GlobalIdIfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world. X
2OwnerHistoryIfcOwnerHistory? 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,
NOTE  only the last modification in stored - either as addition, deletion or modification.
IFC4 CHANGE  The attribute has been changed to be OPTIONAL.
X
3NameIfcLabel? 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. X
4DescriptionIfcText? Optional description, provided for exchanging informative comments.X
IfcRelationship
IfcRelConnects
IfcRelConnectsElements
5ConnectionGeometryIfcConnectionGeometry? The geometric shape representation of the connection geometry that is provided in the object coordinate system of the RelatingElement (mandatory) and in the object coordinate system of the RelatedElement (optionally).X
6RelatingElementIfcElement Reference to a subtype of IfcElement that is connected by the connection relationship in the role of RelatingElement. X
7RelatedElementIfcElement Reference to a subtype of IfcElement that is connected by the connection relationship in the role of RelatedElement.X
IfcRelConnectsWithRealizingElements
8RealizingElementsIfcElementS[1:?] Defines the elements that realize a connection relationship.X
9ConnectionTypeIfcLabel? The type of the connection given for informal purposes, it may include labels, like 'joint', 'rigid joint', 'flexible joint', etc.X
Definitions applying to General Usage

Concept inheritance

#ConceptTemplateModel View
IfcRoot
IdentitySoftware IdentityGeneral Usage
Revision ControlRevision ControlGeneral Usage
Formal representations
XML Specification
 <xs:element name="IfcRelConnectsWithRealizingElements" type="ifc:IfcRelConnectsWithRealizingElements" substitutionGroup="ifc:IfcRelConnectsElements" nillable="true"/>
 <xs:complexType name="IfcRelConnectsWithRealizingElements">
  <xs:complexContent>
   <xs:extension base="ifc:IfcRelConnectsElements">
    <xs:sequence>
     <xs:element name="RealizingElements">
      <xs:complexType>
       <xs:sequence>
        <xs:element ref="ifc:IfcElement" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:attribute ref="ifc:itemType" fixed="ifc:IfcElement"/>
       <xs:attribute ref="ifc:cType" fixed="set"/>
       <xs:attribute ref="ifc:arraySize" use="optional"/>
      </xs:complexType>
     </xs:element>
    </xs:sequence>
    <xs:attribute name="ConnectionType" type="ifc:IfcLabel" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcRelConnectsWithRealizingElements
 SUBTYPE OF (IfcRelConnectsElements);
  RealizingElements : SET [1:?] OF IfcElement;
  ConnectionType : OPTIONAL IfcLabel;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

References  References: IfcElement

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