<xs:simpleType name="IfcDerivedUnitEnum">
    <xs:restriction base="xs:string">
        <xs:enumeration value="angularvelocityunit" />
        <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="soundpowerunit" />
        <xs:enumeration value="soundpressureunit" />
        <xs:enumeration value="temperaturegradientunit" />
        <xs:enumeration value="thermalexpansioncoefficientunit" />
        <xs:enumeration value="warpingconstantunit" />
        <xs:enumeration value="warpingmomentunit" />
        <xs:enumeration value="userdefined" />
    </xs:restriction>
</xs:simpleType>

• IfcDerivedUnitEnum
• ifc:UnitType
• ifc:IfcDerivedUnitEnum