8.11.3.9 IfcNamedUnit

RV ⓘ

AbV ⓘ

ABSTRACT This definition may not be instantiated

8.11.3.9.1 Semantic definition

8.11.3.9.2 Entity inheritance

- IfcNamedUnit

8.11.3.9.3 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.

Table 8.11.3.9.A

8.11.3.9.4 Formal propositions

Name	Description
WR1	Correct dimensions of the unit are established through the function IfcCorrectDimensions.
`IfcCorrectDimensions (SELF.UnitType, SELF.Dimensions)`

Table 8.11.3.9.B

8.11.3.9.5 Formal representation

 ENTITY IfcNamedUnit
 ABSTRACT SUPERTYPE OF (ONEOF
	(IfcContextDependentUnit
	,IfcConversionBasedUnit
	,IfcSIUnit));
	Dimensions : IfcDimensionalExponents;
	UnitType : IfcUnitEnum;
 WHERE
	WR1 : IfcCorrectDimensions (SELF.UnitType, SELF.Dimensions);
END_ENTITY;

8.11.3.9.6 References

IfcContextDependentUnit
IfcConversionBasedUnit
IfcCorrectUnitAssignment
IfcDerivedUnitElement
IfcGeographicCRS
IfcPhysicalSimpleQuantity
IfcProjectedCRS
IfcSIUnit
IfcUnit

	ENTITY IfcNamedUnit
	ABSTRACT SUPERTYPE OF (ONEOF
	(IfcContextDependentUnit
	,IfcConversionBasedUnit
	,IfcSIUnit));
	Dimensions : IfcDimensionalExponents;
	UnitType : IfcUnitEnum;
	WHERE
	WR1 : IfcCorrectDimensions (SELF.UnitType, SELF.Dimensions);
	END_ENTITY;