#### 7.1.2.1 IfcConstructionProductResourceTypeEnum

This enumeration is used to identify the primary purpose of a construction product resource. It describes use of products created for construction, and excludes products of the finished building model.

> HISTORY New enumeration in IFC4.

Enumerated Item Definitions:

- ASSEMBLY: Construction of assemblies for use as input to the building model or other assemblies.
- FORMWORK: Construction or placement of forms for placing materials such as concrete.
- USERDEFINED: User-defined resource.
- NOTDEFINED: Undefined resource.

XSD Specification:

<xs:simpleType name="IfcConstructionProductResourceTypeEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="assembly"/>
<xs:enumeration value="formwork"/>
<xs:enumeration value="userdefined"/>
<xs:enumeration value="notdefined"/>
</xs:restriction>
</xs:simpleType>

EXPRESS Specification:

TYPE IfcConstructionProductResourceTypeEnum = ENUMERATION OF (
| ASSEMBLY, FORMWORK, USERDEFINED, NOTDEFINED);
END_TYPE;

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