ifc:IfcConstructionMaterialResourceTypeEnum

<xs:simpleType name="IfcConstructionMaterialResourceTypeEnum">
  <xs:restriction base="xs:string">
    <xs:enumeration value="aggregates"/>
    <xs:enumeration value="concrete"/>
    <xs:enumeration value="drywall"/>
    <xs:enumeration value="fuel"/>
    <xs:enumeration value="gypsum"/>
    <xs:enumeration value="masonry"/>
    <xs:enumeration value="metal"/>
    <xs:enumeration value="plastic"/>
    <xs:enumeration value="wood"/>
    <xs:enumeration value="notdefined"/>
    <xs:enumeration value="userdefined"/>
  </xs:restriction>
</xs:simpleType>