![]()  | Derived Unit Enum | 
![]()  | Enumération des unités dérivées | 
| Item | SPF | XML | Change | Description | IFC2x3 to IFC4 4.0.0.0 | 
|---|---|---|---|---|
| IfcDerivedUnitEnum | ||||
| AREADENSITYUNIT | ADDED | |||
| SOUNDPOWERLEVELUNIT | ADDED | |||
| SOUNDPRESSURELEVELUNIT | ADDED | |||
| TEMPERATURERATEOFCHANGEUNIT | ADDED | IFC2x3 to IFC4 4.0.0.0 | ||
| IfcDerivedUnitEnum | ||||
| AREADENSITYUNIT | ADDED | |||
| SOUNDPOWERLEVELUNIT | ADDED | |||
| SOUNDPRESSURELEVELUNIT | ADDED | |||
| TEMPERATURERATEOFCHANGEUNIT | ADDED | 
IfcDerivedUnitEnum is an enumeration type for allowed types of derived units.
HISTORY New type in IFC2.0.
IFC 2x4 change: added AREADENSITYUNIT, SOUNDPOWERLEVELUNIT, SOUNDPRESSURELEVELUNIT and TEMPERATURERATEOFCHANGEUNIT.
| Constant | Description | 
|---|---|
| ANGULARVELOCITYUNIT | |
| AREADENSITYUNIT | |
| COMPOUNDPLANEANGLEUNIT | |
| DYNAMICVISCOSITYUNIT | |
| HEATFLUXDENSITYUNIT | |
| INTEGERCOUNTRATEUNIT | |
| ISOTHERMALMOISTURECAPACITYUNIT | |
| KINEMATICVISCOSITYUNIT | |
| LINEARVELOCITYUNIT | |
| MASSDENSITYUNIT | |
| MASSFLOWRATEUNIT | |
| MOISTUREDIFFUSIVITYUNIT | |
| MOLECULARWEIGHTUNIT | |
| SPECIFICHEATCAPACITYUNIT | |
| THERMALADMITTANCEUNIT | |
| THERMALCONDUCTANCEUNIT | |
| THERMALRESISTANCEUNIT | |
| THERMALTRANSMITTANCEUNIT | |
| VAPORPERMEABILITYUNIT | |
| VOLUMETRICFLOWRATEUNIT | |
| ROTATIONALFREQUENCYUNIT | |
| TORQUEUNIT | |
| MOMENTOFINERTIAUNIT | |
| LINEARMOMENTUNIT | |
| LINEARFORCEUNIT | |
| PLANARFORCEUNIT | |
| MODULUSOFELASTICITYUNIT | |
| SHEARMODULUSUNIT | |
| LINEARSTIFFNESSUNIT | |
| ROTATIONALSTIFFNESSUNIT | |
| MODULUSOFSUBGRADEREACTIONUNIT | |
| ACCELERATIONUNIT | |
| CURVATUREUNIT | |
| HEATINGVALUEUNIT | |
| IONCONCENTRATIONUNIT | |
| LUMINOUSINTENSITYDISTRIBUTIONUNIT | |
| MASSPERLENGTHUNIT | |
| MODULUSOFLINEARSUBGRADEREACTIONUNIT | |
| MODULUSOFROTATIONALSUBGRADEREACTIONUNIT | |
| PHUNIT | |
| ROTATIONALMASSUNIT | |
| SECTIONAREAINTEGRALUNIT | |
| SECTIONMODULUSUNIT | |
| SOUNDPOWERLEVELUNIT | |
| SOUNDPOWERUNIT | |
| SOUNDPRESSURELEVELUNIT | |
| SOUNDPRESSUREUNIT | |
| TEMPERATUREGRADIENTUNIT | |
| TEMPERATURERATEOFCHANGEUNIT | |
| THERMALEXPANSIONCOEFFICIENTUNIT | |
| WARPINGCONSTANTUNIT | |
| WARPINGMOMENTUNIT | |
| USERDEFINED | User defined derived unit. | 
 <xs:simpleType name="IfcDerivedUnitEnum">
  <xs:restriction base="xs:string">
   <xs:enumeration value="angularvelocityunit"/>
   <xs:enumeration value="areadensityunit"/>
   <xs:enumeration value="compoundplaneangleunit"/>
   <xs:enumeration value="dynamicviscosityunit"/>
   <xs:enumeration value="heatfluxdensityunit"/>
   <xs:enumeration value="integercountrateunit"/>
   <xs:enumeration value="isothermalmoisturecapacityunit"/>
   <xs:enumeration value="kinematicviscosityunit"/>
   <xs:enumeration value="linearvelocityunit"/>
   <xs:enumeration value="massdensityunit"/>
   <xs:enumeration value="massflowrateunit"/>
   <xs:enumeration value="moisturediffusivityunit"/>
   <xs:enumeration value="molecularweightunit"/>
   <xs:enumeration value="specificheatcapacityunit"/>
   <xs:enumeration value="thermaladmittanceunit"/>
   <xs:enumeration value="thermalconductanceunit"/>
   <xs:enumeration value="thermalresistanceunit"/>
   <xs:enumeration value="thermaltransmittanceunit"/>
   <xs:enumeration value="vaporpermeabilityunit"/>
   <xs:enumeration value="volumetricflowrateunit"/>
   <xs:enumeration value="rotationalfrequencyunit"/>
   <xs:enumeration value="torqueunit"/>
   <xs:enumeration value="momentofinertiaunit"/>
   <xs:enumeration value="linearmomentunit"/>
   <xs:enumeration value="linearforceunit"/>
   <xs:enumeration value="planarforceunit"/>
   <xs:enumeration value="modulusofelasticityunit"/>
   <xs:enumeration value="shearmodulusunit"/>
   <xs:enumeration value="linearstiffnessunit"/>
   <xs:enumeration value="rotationalstiffnessunit"/>
   <xs:enumeration value="modulusofsubgradereactionunit"/>
   <xs:enumeration value="accelerationunit"/>
   <xs:enumeration value="curvatureunit"/>
   <xs:enumeration value="heatingvalueunit"/>
   <xs:enumeration value="ionconcentrationunit"/>
   <xs:enumeration value="luminousintensitydistributionunit"/>
   <xs:enumeration value="massperlengthunit"/>
   <xs:enumeration value="modulusoflinearsubgradereactionunit"/>
   <xs:enumeration value="modulusofrotationalsubgradereactionunit"/>
   <xs:enumeration value="phunit"/>
   <xs:enumeration value="rotationalmassunit"/>
   <xs:enumeration value="sectionareaintegralunit"/>
   <xs:enumeration value="sectionmodulusunit"/>
   <xs:enumeration value="soundpowerlevelunit"/>
   <xs:enumeration value="soundpowerunit"/>
   <xs:enumeration value="soundpressurelevelunit"/>
   <xs:enumeration value="soundpressureunit"/>
   <xs:enumeration value="temperaturegradientunit"/>
   <xs:enumeration value="temperaturerateofchangeunit"/>
   <xs:enumeration value="thermalexpansioncoefficientunit"/>
   <xs:enumeration value="warpingconstantunit"/>
   <xs:enumeration value="warpingmomentunit"/>
   <xs:enumeration value="userdefined"/>
  </xs:restriction>
 </xs:simpleType>
TYPE IfcDerivedUnitEnum = ENUMERATION OF (
 ANGULARVELOCITYUNIT, 
 AREADENSITYUNIT, 
 COMPOUNDPLANEANGLEUNIT, 
 DYNAMICVISCOSITYUNIT, 
 HEATFLUXDENSITYUNIT, 
 INTEGERCOUNTRATEUNIT, 
 ISOTHERMALMOISTURECAPACITYUNIT, 
 KINEMATICVISCOSITYUNIT, 
 LINEARVELOCITYUNIT, 
 MASSDENSITYUNIT, 
 MASSFLOWRATEUNIT, 
 MOISTUREDIFFUSIVITYUNIT, 
 MOLECULARWEIGHTUNIT, 
 SPECIFICHEATCAPACITYUNIT, 
 THERMALADMITTANCEUNIT, 
 THERMALCONDUCTANCEUNIT, 
 THERMALRESISTANCEUNIT, 
 THERMALTRANSMITTANCEUNIT, 
 VAPORPERMEABILITYUNIT, 
 VOLUMETRICFLOWRATEUNIT, 
 ROTATIONALFREQUENCYUNIT, 
 TORQUEUNIT, 
 MOMENTOFINERTIAUNIT, 
 LINEARMOMENTUNIT, 
 LINEARFORCEUNIT, 
 PLANARFORCEUNIT, 
 MODULUSOFELASTICITYUNIT, 
 SHEARMODULUSUNIT, 
 LINEARSTIFFNESSUNIT, 
 ROTATIONALSTIFFNESSUNIT, 
 MODULUSOFSUBGRADEREACTIONUNIT, 
 ACCELERATIONUNIT, 
 CURVATUREUNIT, 
 HEATINGVALUEUNIT, 
 IONCONCENTRATIONUNIT, 
 LUMINOUSINTENSITYDISTRIBUTIONUNIT, 
 MASSPERLENGTHUNIT, 
 MODULUSOFLINEARSUBGRADEREACTIONUNIT, 
 MODULUSOFROTATIONALSUBGRADEREACTIONUNIT, 
 PHUNIT, 
 ROTATIONALMASSUNIT, 
 SECTIONAREAINTEGRALUNIT, 
 SECTIONMODULUSUNIT, 
 SOUNDPOWERLEVELUNIT, 
 SOUNDPOWERUNIT, 
 SOUNDPRESSURELEVELUNIT, 
 SOUNDPRESSUREUNIT, 
 TEMPERATUREGRADIENTUNIT, 
 TEMPERATURERATEOFCHANGEUNIT, 
 THERMALEXPANSIONCOEFFICIENTUNIT, 
 WARPINGCONSTANTUNIT, 
 WARPINGMOMENTUNIT, 
 USERDEFINED);
END_TYPE;
  References: IfcDerivedUnit