<xs:complexType name="ConstructionStructureAttributeType">
    <xs:sequence>
      <xs:element name="structureType" minOccurs="0" type="gml:CodeType"/>
      <xs:element name="length" minOccurs="0" type="gml:LengthType"/>
      <xs:element name="width" minOccurs="0" type="gml:LengthType"/>
      <xs:element name="depth" minOccurs="0" type="gml:LengthType"/>
      <xs:element name="volume" minOccurs="0" type="gml:MeasureType"/>
    </xs:sequence>
  </xs:complexType>