IFC 4.3.0.1 (IFC4X3) development

# 5.1.3.30 IfcRelAssociatesClassification

## 5.1.3.30.1 Semantic definition

The objectified relationship IfcRelAssociatesClassification handles the assignment of a classification item (items of the select IfcClassificationSelect) to objects occurrences (subtypes of IfcObject) or object types (subtypes of IfcTypeObject).

The relationship is used to assign a classification item, or a classification system itself to objects. Depending on the type of the RelatingClassification it is either:

• a reference to an classification item within an external classification system, or
• a reference to the classification system itself

The inherited attribute RelatedObjects define the objects or object types to which the classification is applied. The attribute RelatingClassification is the reference to a classification, applied to the object(s). A single RelatingClassification can thereby be applied to one or multiple objects.

## 5.1.3.30.5 Formal representation

ENTITY IfcRelAssociatesClassification
SUBTYPE OF (IfcRelAssociates);
RelatingClassification : IfcClassificationSelect;
END_ENTITY;