<simpleType name="ThermalIntegrityProfilingMethodEnumType">
  <restriction base="string">
    <enumeration value="thermal probe">
      <annotation>
        <documentation>Temperature is measured by lowering a thermal probe into access ducts (tubes) installed in the element during construction, taking readings at intervals along the length. ASTM D7949 Method A.</documentation>
      </annotation>
    </enumeration>
    <enumeration value="embedded thermal sensor">
      <annotation>
        <documentation>Temperature is measured by multiple thermistors attached to the reinforcing cage at several locations around its perimeter and at intervals along its length, cast into the concrete and read out after placement. ASTM D7949 Method B.</documentation>
      </annotation>
    </enumeration>
    <enumeration value="embedded fiber optic">
      <annotation>
        <documentation>Temperature is measured by fiber-optic cable attached to the reinforcing cage and cast into the concrete, giving effectively continuous coverage along the length rather than discrete sensor stations. ASTM D7949 Method C, added in the standard's 2025 reinstatement.</documentation>
      </annotation>
    </enumeration>
  </restriction>
</simpleType>