enum IfcDerivedUnitEnum {
kIfcDerivedUnitEnum_ANGULARVELOCITYUNIT,
kIfcDerivedUnitEnum_AREADENSITYUNIT,
kIfcDerivedUnitEnum_COMPOUNDPLANEANGLEUNIT,
kIfcDerivedUnitEnum_DYNAMICVISCOSITYUNIT,
kIfcDerivedUnitEnum_HEATFLUXDENSITYUNIT,
kIfcDerivedUnitEnum_INTEGERCOUNTRATEUNIT,
kIfcDerivedUnitEnum_ISOTHERMALMOISTURECAPACITYUNIT,
kIfcDerivedUnitEnum_KINEMATICVISCOSITYUNIT,
kIfcDerivedUnitEnum_LINEARVELOCITYUNIT,
kIfcDerivedUnitEnum_MASSDENSITYUNIT,
kIfcDerivedUnitEnum_MASSFLOWRATEUNIT,
kIfcDerivedUnitEnum_MOISTUREDIFFUSIVITYUNIT,
kIfcDerivedUnitEnum_MOLECULARWEIGHTUNIT,
kIfcDerivedUnitEnum_SPECIFICHEATCAPACITYUNIT,
kIfcDerivedUnitEnum_THERMALADMITTANCEUNIT,
kIfcDerivedUnitEnum_THERMALCONDUCTANCEUNIT,
kIfcDerivedUnitEnum_THERMALRESISTANCEUNIT,
kIfcDerivedUnitEnum_THERMALTRANSMITTANCEUNIT,
kIfcDerivedUnitEnum_VAPORPERMEABILITYUNIT,
kIfcDerivedUnitEnum_VOLUMETRICFLOWRATEUNIT,
kIfcDerivedUnitEnum_ROTATIONALFREQUENCYUNIT,
kIfcDerivedUnitEnum_TORQUEUNIT,
kIfcDerivedUnitEnum_MOMENTOFINERTIAUNIT,
kIfcDerivedUnitEnum_LINEARMOMENTUNIT,
kIfcDerivedUnitEnum_LINEARFORCEUNIT,
kIfcDerivedUnitEnum_PLANARFORCEUNIT,
kIfcDerivedUnitEnum_MODULUSOFELASTICITYUNIT,
kIfcDerivedUnitEnum_SHEARMODULUSUNIT,
kIfcDerivedUnitEnum_LINEARSTIFFNESSUNIT,
kIfcDerivedUnitEnum_ROTATIONALSTIFFNESSUNIT,
kIfcDerivedUnitEnum_MODULUSOFSUBGRADEREACTIONUNIT,
kIfcDerivedUnitEnum_ACCELERATIONUNIT,
kIfcDerivedUnitEnum_CURVATUREUNIT,
kIfcDerivedUnitEnum_HEATINGVALUEUNIT,
kIfcDerivedUnitEnum_IONCONCENTRATIONUNIT,
kIfcDerivedUnitEnum_LUMINOUSINTENSITYDISTRIBUTIONUNIT,
kIfcDerivedUnitEnum_MASSPERLENGTHUNIT,
kIfcDerivedUnitEnum_MODULUSOFLINEARSUBGRADEREACTIONUNIT,
kIfcDerivedUnitEnum_MODULUSOFROTATIONALSUBGRADEREACTIONUNIT,
kIfcDerivedUnitEnum_PHUNIT,
kIfcDerivedUnitEnum_ROTATIONALMASSUNIT,
kIfcDerivedUnitEnum_SECTIONAREAINTEGRALUNIT,
kIfcDerivedUnitEnum_SECTIONMODULUSUNIT,
kIfcDerivedUnitEnum_SOUNDPOWERLEVELUNIT,
kIfcDerivedUnitEnum_SOUNDPOWERUNIT,
kIfcDerivedUnitEnum_SOUNDPRESSURELEVELUNIT,
kIfcDerivedUnitEnum_SOUNDPRESSUREUNIT,
kIfcDerivedUnitEnum_TEMPERATUREGRADIENTUNIT,
kIfcDerivedUnitEnum_TEMPERATURERATEOFCHANGEUNIT,
kIfcDerivedUnitEnum_THERMALEXPANSIONCOEFFICIENTUNIT,
kIfcDerivedUnitEnum_WARPINGCONSTANTUNIT,
kIfcDerivedUnitEnum_WARPINGMOMENTUNIT,
kIfcDerivedUnitEnum_USERDEFINED,
kIfcDerivedUnitEnum_unset
};