IfcContextDependentUnit

Natural language names
deKontextabhängige Einheit
enContext Dependent Unit
frUnité dépendant du contexte
Semantic definitions at the entity
Entity definition
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.
Attribute definitions
#AttributeTypeCardinalityDescription C
3NameIfcLabel[1:1] The word, or group of words, by which the context dependent unit is referred to.X
HasExternalReferenceIfcExternalReferenceRelationship
@RelatedResourceObjects
S[0:?]Reference to external information, e.g. library, classification, or document information, which is associated with the context dependent unit. X
Inherited definitions from supertypes
Entity inheritance IfcNamedUnit
Attribute inheritance
#AttributeTypeCardinalityDescriptionC
IfcNamedUnit
1DimensionsIfcDimensionalExponents[1:1] The dimensional exponents of the SI base units by which the named unit is defined.X
2UnitTypeIfcUnitEnum[1:1] The type of the unit.X
IfcContextDependentUnit
3NameIfcLabel[1:1] The word, or group of words, by which the context dependent unit is referred to.X
HasExternalReferenceIfcExternalReferenceRelationship
@RelatedResourceObjects
S[0:?]Reference to external information, e.g. library, classification, or document information, which is associated with the context dependent unit. X
Formal representations
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
  HasExternalReference : SET OF IfcExternalReferenceRelationship FOR RelatedResourceObjects;
END_ENTITY;

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