#### 8.9.2.2 IfcBoolean

IfcBoolean is a defined data type of simple data type Boolean. It is required since a select type (IfcSimpleValue) cannot directly include simple types in its select list. A Boolean type can have value TRUE or FALSE.

Type: BOOLEAN

> HISTORY New type in IFC1.5.1.

XSD Specification:

<xs:simpleType name="IfcBoolean">
<xs:restriction base="xs:boolean"/>
</xs:simpleType>
<xs:element name="IfcBoolean-wrapper" nillable="true">
<xs:complexType>
<xs:simpleContent>
<xs:extension base="ifc:IfcBoolean">
<xs:attributeGroup ref="ifc:instanceAttributes"/>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
</xs:element>

EXPRESS Specification:

TYPE IfcBoolean = BOOLEAN;
END_TYPE;

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