Benannte Einheit | |
Named Unit | |
Unité nommée |
NOTE Definition according to ISO/CD 10303-41:1992
A named unit is a unit quantity associated with the word, or group of words, by which the unit is identified.
NOTE Corresponding ISO 10303 name: named_unit, please refer to ISO/IS 10303-41 for the final definition of the formal standard.
HISTORY New type in IFC1.5.1.
# | Attribute | Type | Cardinality | Description | C |
---|---|---|---|---|---|
1 | Dimensions | IfcDimensionalExponents | [1:1] | The dimensional exponents of the SI base units by which the named unit is defined. | X |
2 | UnitType | IfcUnitEnum | [1:1] | The type of the unit. | X |
Rule | Description |
---|---|
WR1 | Correct dimensions of the unit are established through the function IfcCorrectDimensions. |
# | Attribute | Type | Cardinality | Description | C |
---|---|---|---|---|---|
IfcNamedUnit | |||||
1 | Dimensions | IfcDimensionalExponents | [1:1] | The dimensional exponents of the SI base units by which the named unit is defined. | X |
2 | UnitType | IfcUnitEnum | [1:1] | The type of the unit. | X |
<xs:element name="IfcNamedUnit" type="ifc:IfcNamedUnit" abstract="true" substitutionGroup="ifc:Entity" nillable="true"/>
<xs:complexType name="IfcNamedUnit" abstract="true">
<xs:complexContent>
<xs:extension base="ifc:Entity">
<xs:sequence>
<xs:element name="Dimensions" type="ifc:IfcDimensionalExponents" nillable="true" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="UnitType" type="ifc:IfcUnitEnum" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
ENTITY IfcNamedUnit
ABSTRACT SUPERTYPE OF(ONEOF(IfcContextDependentUnit, IfcConversionBasedUnit, IfcSIUnit));
Dimensions : IfcDimensionalExponents;
UnitType : IfcUnitEnum;
WHERE
WR1 : IfcCorrectDimensions (SELF.UnitType, SELF.Dimensions);
END_ENTITY;