ifc:IfcStairFlightTypeEnum

<xs:simpleType name="IfcStairFlightTypeEnum">
  <xs:restriction base="xs:string">
    <xs:enumeration value="straight"/>
    <xs:enumeration value="winder"/>
    <xs:enumeration value="spiral"/>
    <xs:enumeration value="curved"/>
    <xs:enumeration value="freeform"/>
    <xs:enumeration value="userdefined"/>
    <xs:enumeration value="notdefined"/>
  </xs:restriction>
</xs:simpleType>