IfcRelConnectsWithRealizingElements

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 Release IFC2x Edition 2.

Attribute definitions

#	Attribute	Type	Cardinality	Description	A
8	RealizingElements	IfcElement	S[1:?]	Defines the elements that realize a connection relationship.	X
9	ConnectionType	-		This attribute is out of scope for this model view definition and shall not be set.

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	A
IfcRoot
1	GlobalId	IfcGloballyUniqueId	[1:1]	Assignment of a globally unique identifier within the entire software world.	X
2	OwnerHistory	IfcOwnerHistory	[1:1]	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.	X
3	Name	IfcLabel	[0:1]	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
4	Description	IfcText	[0:1]	Optional description, provided for exchanging informative comments.	X
IfcRelationship
IfcRelConnects
IfcRelConnectsElements
5	ConnectionGeometry	-		This attribute is out of scope for this model view definition and shall not be set.
6	RelatingElement	IfcElement	[1:1]	Reference to an Element that is connected by the objectified relationship.	X
7	RelatedElement	IfcElement	[1:1]	Reference to an Element that is connected by the objectified relationship.	X
IfcRelConnectsWithRealizingElements
8	RealizingElements	IfcElement	S[1:?]	Defines the elements that realize a connection relationship.	X
9	ConnectionType	-		This attribute is out of scope for this model view definition and shall not be set.

Formal representations

XSD 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:extension>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcRelConnectsWithRealizingElements

 SUBTYPE OF (IfcRelConnectsElements);

  RealizingElements : SET [1:?] OF IfcElement;

  ConnectionType : OPTIONAL IfcStrippedOptional;

END_ENTITY;

 EXPRESS-G diagram