Natural language names
 | Hinzufügen / Addition von Teil zu Element - Relation |
 | Rel Projects Element |
| Hinzufügen / Addition von Teil zu Element - Relation |
| Rel Projects Element |
| Item | SPF | XML | Change | Description | IFC2x3 to IFC4 |
|---|---|---|---|---|
| IfcRelProjectsElement | ||||
| OwnerHistory | MODIFIED | Instantiation changed to OPTIONAL. |
The IfcRelProjectsElement is an objectified relationship between an element and one projection element that creates a modifier to the shape of the element. The relationship is defined to be a 1:1 relationship, if an element has more than one projection, several relationship objects have to be used, each pointing to a different projection element. The IfcRelProjectsElement establishes an aggregation relationship between the main element and a sub ordinary addition feature.
NOTE In contrary the IfcRelAggregates relationship established an aggregation of equal parts to a whole.
The IfcRelProjectsElement implies a Boolean operation of addition for the geometric bodies of the element and the feature element. As with all decomposition relationships it determines:
HISTORY New entity in IFC2x2.
IFC4 CHANGE Supertype changed to IfcRelDecomposes.
| # | Attribute | Type | Cardinality | Description | C |
|---|---|---|---|---|---|
| 5 | RelatingElement | IfcElement | [1:1] | Element at which a projection is created by the associated IfcProjectionElement. | X |
| 6 | RelatedFeatureElement | IfcFeatureElementAddition | [1:1] | Reference to the IfcFeatureElementAddition that defines an addition to the volume of the element, by using a Boolean addition operation. An example is a projection at the associated element. | X |
| # | Attribute | Type | Cardinality | Description | C |
|---|---|---|---|---|---|
| IfcRoot | |||||
| 1 | GlobalId | IfcGloballyUniqueId | [1:1] | Assignment of a globally unique identifier within the entire software world. | X |
| 2 | OwnerHistory | IfcOwnerHistory | [0:1] |
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 - either as addition, deletion or modification. | 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 | |||||
| IfcRelDecomposes | |||||
| IfcRelProjectsElement | |||||
| 5 | RelatingElement | IfcElement | [1:1] | Element at which a projection is created by the associated IfcProjectionElement. | X |
| 6 | RelatedFeatureElement | IfcFeatureElementAddition | [1:1] | Reference to the IfcFeatureElementAddition that defines an addition to the volume of the element, by using a Boolean addition operation. An example is a projection at the associated element. | X |
| # | Concept | Model View |
|---|---|---|
| IfcRoot | ||
| Software Identity | Common Use Definitions | |
| Revision Control | Common Use Definitions | |
<xs:element name="IfcRelProjectsElement" type="ifc:IfcRelProjectsElement" substitutionGroup="ifc:IfcRelDecomposes" nillable="true"/>
<xs:complexType name="IfcRelProjectsElement">
<xs:complexContent>
<xs:extension base="ifc:IfcRelDecomposes">
<xs:sequence>
<xs:element name="RelatingElement" type="ifc:IfcElement" nillable="true"/>
<xs:element name="RelatedFeatureElement" type="ifc:IfcFeatureElementAddition" nillable="true"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
ENTITY IfcRelProjectsElement
SUBTYPE OF (IfcRelDecomposes);
RelatingElement : IfcElement;
RelatedFeatureElement : IfcFeatureElementAddition;
END_ENTITY;
EXPRESS-G diagram
Link to this page