ifc:IfcFootingTypeEnum

<xs:simpleType name="IfcFootingTypeEnum">
  <xs:restriction base="xs:string">
    <xs:enumeration value="caisson_foundation"/>
    <xs:enumeration value="footing_beam"/>
    <xs:enumeration value="pad_footing"/>
    <xs:enumeration value="pile_cap"/>
    <xs:enumeration value="strip_footing"/>
    <xs:enumeration value="userdefined"/>
    <xs:enumeration value="notdefined"/>
  </xs:restriction>
</xs:simpleType>