#### 8.9.3.1 IfcContextDependentUnit

| Unité dépendant du contexte
| Kontextabhängige Einheit

> NOTE Definition according to ISO/CD 10303-41:1992
> A context dependent unit is a unit which is not related to the SI system.

> NOTE The number of parts in an assembly is a physical quantity measured in units that may be called "parts" but which cannot be related to an SI unit.

> NOTE Corresponding ISO 10303 name: context_dependent_unit, please refer to ISO/IS 10303-41 for the final definition of the formal standard.

> HISTORY New entity in IFC1.5.1.

XSD Specification:

<xs:element name="IfcContextDependentUnit" type="ifc:IfcContextDependentUnit" substitutionGroup="ifc:IfcNamedUnit" nillable="true"/>
<xs:complexType name="IfcContextDependentUnit">
<xs:complexContent>
<xs:extension base="ifc:IfcNamedUnit">
<xs:attribute name="Name" type="ifc:IfcLabel" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>

EXPRESS Specification:

ENTITY IfcContextDependentUnit

| SUBTYPE OF IfcNamedUnit;

Name | : | IfcLabel;

| INVERSE

END_ENTITY;

EXPRESS-G diagram

Attribute Definitions:

Name | : | The word, or group of words, by which the context dependent unit is referred to.

Inheritance Graph:

ENTITY IfcContextDependentUnit

| ENTITY IfcNamedUnit

Dimensions | : | IfcDimensionalExponents;
UnitType | : | IfcUnitEnum;

| ENTITY IfcContextDependentUnit

Name | : | IfcLabel;

| INVERSE

END_ENTITY;

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