IFC 4.3.x development

5.4.3.42 IfcRelAdheresToElement

5.4.3.42.1 Semantic definitions at the entity

The IfcRelAdheresToElement is an objectified relationship between an element and one to many surface feature elements that adhere to the surface of the element. The relationship is defined to be a 1 to many relationship. The IfcRelAdheresToElement establishes an aggregation relationship between the main element and a sub ordinary surface feature.

NOTE  In contrary the IfcRelAggregates relationship establishs an aggregation of equal parts to a whole.

The IfcRelAdheresToElement implies a surface interface between the geometric bodies of the element and the surface feature . As with all decomposition relationships it determines:

HISTORY  New entity in IFC4x3.

5.4.3.42.1 Attributes

#Attribute Type Description
IfcRoot
1GlobalId IfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world.
2OwnerHistory OPTIONAL 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.
3Name OPTIONAL 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.
4Description OPTIONAL IfcText Optional description, provided for exchanging informative comments.
IfcRelAdheresToElement
5RelatingElement IfcElement Element to which the IfcSurfaceFeature is adhered to.
6RelatedSurfaceFeaturesSET [1:?] OF IfcSurfaceFeatureThe IfcSurfaceFeature(s) that adheres to the surface of the parent element.

5.4.3.42.2 Entity inheritance

dot_inheritance IfcRelAdheresToElement IfcRelAdheresToElement IfcRelDecomposes IfcRelDecomposes IfcRelAdheresToElement->IfcRelDecomposes IfcRelDecomposes_children 4 more... IfcRelDecomposes_children->IfcRelDecomposes IfcRelationship IfcRelationship IfcRelDecomposes->IfcRelationship IfcRelationship_children 5 more... IfcRelationship_children->IfcRelationship IfcRoot IfcRoot IfcRelationship->IfcRoot IfcObjectDefinition IfcObjectDefinition IfcObjectDefinition->IfcRoot IfcPropertyDefinition IfcPropertyDefinition IfcPropertyDefinition->IfcRoot \n

5.4.3.42.3 Concepts

5.4.3.42.3.1 Identity

IfcRoot assigns the globally unique ID. In addition it may provide for a name and a description about the concept.

5.4.3.42.3.2 Revision Control

link

Ownership, history, and merge state is captured using IfcOwnerHistory.

5.4.3.42.4 Formal representations

ENTITY IfcRelAdheresToElement
 SUBTYPE OF (IfcRelDecomposes);
	RelatingElement : IfcElement;
	RelatedSurfaceFeatures : SET [1:?] OF IfcSurfaceFeature;
END_ENTITY;