IfcRelConnectsStructuralActivity

BACnet MVD

#### IfcRelConnectsStructuralActivity

Natural language names

| Verbindet Einwirkungen / Reaktionen des Tragwerks - Relation
| Rel Connects Structural Activity

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcRelConnectsStructuralActivity |  |  |  |
OwnerHistory |  |  | MODIFIED | Instantiation changed to OPTIONAL.

##### Semantic definitions at the entity

Entity definition

The IfcRelConnectsStructuralActivity relationship connects a structural activity (either an action or reaction) to a structural member, structural connection, or element.

> HISTORY New entity in IFC2x2.

Attribute definitions

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
5 | RelatingElement | IfcStructuralActivityAssignmentSelect |  | Reference to a structural item or element to which the specified activity is applied. |  | X
6 | RelatedStructuralActivity | IfcStructuralActivity |  | Reference to a structural activity which is acting upon the specified structural item or element. |  | X

##### Inherited definitions from supertypes

Entity inheritance
Attribute inheritance

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
IfcRoot
1 | GlobalId | IfcGloballyUniqueId |  | Assignment of a globally unique identifier within the entire software world. | X | X

2

OwnerHistory

IfcOwnerHistory

?

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

X

3 | Name | IfcLabel | ? | 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 | X
4 | Description | IfcText | ? | Optional description, provided for exchanging informative comments. |  | X
IfcRelationship
IfcRelConnects
IfcRelConnectsStructuralActivity
5 | RelatingElement | IfcStructuralActivityAssignmentSelect |  | Reference to a structural item or element to which the specified activity is applied. |  | X
6 | RelatedStructuralActivity | IfcStructuralActivity |  | Reference to a structural activity which is acting upon the specified structural item or element. |  | X

##### Definitions applying to Design Transfer View

Concept inheritance

# | Concept | Template | Model View
--- | --- | --- | ---
IfcRoot
| Revision Control | Revision Control | Design Transfer View

##### Definitions applying to BACnet View

Concept inheritance

# | Concept | Template | Model View
--- | --- | --- | ---
IfcRoot
| Revision Control | Revision Control | Design Transfer View

##### Formal representations

XML Specification
`<xs:element name="IfcRelConnectsStructuralActivity" type="ifc:IfcRelConnectsStructuralActivity" substitutionGroup="ifc:IfcRelConnects" nillable="true"/>
<xs:complexType name="IfcRelConnectsStructuralActivity">
<xs:complexContent>
<xs:extension base="ifc:IfcRelConnects">
<xs:sequence>
<xs:element name="RelatingElement">
<xs:complexType>
<xs:group ref="ifc:IfcStructuralActivityAssignmentSelect"/>
</xs:complexType>
</xs:element>
<xs:element name="RelatedStructuralActivity" type="ifc:IfcStructuralActivity" nillable="true"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
`
EXPRESS Specification
`ENTITY IfcRelConnectsStructuralActivity
SUBTYPE OF (IfcRelConnects);
RelatingElement : IfcStructuralActivityAssignmentSelect;
RelatedStructuralActivity : IfcStructuralActivity;
END_ENTITY;

EXPRESS-G diagram

`

References: IfcStructuralActivity IfcStructuralItem

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