# 7.10.2.7 IfcStructuralActivityAssignmentSelect

## 7.10.2.7.1 Semantic definition

This type definition shall be used to distinguish between a reference to an instance either of IfcStructuralItem or IfcElement. The IfcStructuralActivityAssignmentSelect type is referenced by the entity IfcRelConnectsStructuralActivity which defines the connection between activities (IfcStructuralActivity) and the loaded element.

## 7.10.2.7.3 Formal representation

TYPE IfcStructuralActivityAssignmentSelect = SELECT
(IfcElement
,IfcStructuralItem);
END_TYPE;