IfcUnit

8.5.2.13 IfcUnit

NOTE Definition according to ISO/CD 10303-41:1992
A unit is a physical quantity, with a value of one, which is used as a standard in terms of which other quantities are expressed.

NOTE Select item IfcMonetaryUnit is an addition to ISO 10303-41.

NOTE Corresponding ISO 10303 name: unit, please refer to ISO/IS 10303-41 for the final definition of the formal standard.

SELECT

IfcNamedUnit: A unit which is identified by a name.
IfcDerivedUnit: A unit which is derived from an expression of units.
IfcMonetaryUnit: A unit for defining currencies.

HISTORY New type in IFC1.5.1.

XSD Specification:

<xs:group name="IfcUnit">
  <xs:choice>
   <xs:element ref="ifc:IfcNamedUnit"/>
  </xs:choice>
</xs:group>

EXPRESS Specification:

TYPE IfcUnit = SELECT (

IfcNamedUnit);

END_TYPE;

Link to this page