8.11.3.9 IfcNamedUnit
RV ⓘ
AbV ⓘ
ABSTRACT This definition may not be instantiated
8.11.3.9.1 Semantic definition
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. Corresponding ISO 10303 name: named_unit, please refer to ISO/IS 10303-41 for the final definition of the formal standard. New type in IFC1.5.1.8.11.3.9.2 Entity inheritance
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. |
8.11.3.9.4 Formal propositions
| Name | Description |
|---|---|
| WR1 |
Correct dimensions of the unit are established through the function IfcCorrectDimensions. |
|
|
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;