ifc:IfcCoveringTypeEnum

<xs:simpleType name="IfcCoveringTypeEnum">
  <xs:restriction base="xs:string">
    <xs:enumeration value="ceiling"/>
    <xs:enumeration value="flooring"/>
    <xs:enumeration value="cladding"/>
    <xs:enumeration value="roofing"/>
    <xs:enumeration value="molding"/>
    <xs:enumeration value="skirtingboard"/>
    <xs:enumeration value="insulation"/>
    <xs:enumeration value="membrane"/>
    <xs:enumeration value="sleeving"/>
    <xs:enumeration value="wrapping"/>
    <xs:enumeration value="userdefined"/>
    <xs:enumeration value="notdefined"/>
  </xs:restriction>
</xs:simpleType>