8.11.3.1 IfcContextDependentUnit
8.11.3.1.1 Semantic definition
Definition according to ISO/CD 10303-41:1992 A context dependent unit is a unit which is not related to the SI system. 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. Corresponding ISO 10303 name: context_dependent_unit, please refer to ISO/IS 10303-41 for the final definition of the formal standard. New entity in IFC1.5.1.8.11.3.1.2 Entity inheritance
8.11.3.1.3 Attributes
| # | Attribute | Type | Description |
|---|---|---|---|
| IfcNamedUnit (2) | |||
| 1 | Dimensions | IfcDimensionalExponents |
The dimensional exponents of the SI base units by which the named unit is defined. |
| 2 | UnitType | IfcUnitEnum |
The type of the unit. |
| Click to show 2 hidden inherited attributes Click to hide 2 inherited attributes | |||
| IfcContextDependentUnit (2) | |||
| 3 | Name | IfcLabel |
The word, or group of words, by which the context dependent unit is referred to. |
| HasExternalReference | SET [0:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjects |
Reference to external information, e.g. library, classification, or document information, which is associated with the context dependent unit. New inverse attribute |
|
8.11.3.1.4 Formal representation
ENTITY IfcContextDependentUnit
SUBTYPE OF (IfcNamedUnit);
Name : IfcLabel;
INVERSE
HasExternalReference : SET [0:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjects;
END_ENTITY;