<simpleType name="LoadTestIncrementPhaseEnumType">
  <restriction base="string">
    <enumeration value="loading">
      <annotation>
        <documentation>The load is being increased at this increment.</documentation>
      </annotation>
    </enumeration>
    <enumeration value="unloading">
      <annotation>
        <documentation>The load is being decreased at this increment - e.g. between cycles of a cyclic loading procedure, or during final unloading at the end of the test.</documentation>
      </annotation>
    </enumeration>
    <enumeration value="reload">
      <annotation>
        <documentation>The load is being reapplied at this increment following an unloading stage within a cyclic loading procedure.</documentation>
      </annotation>
    </enumeration>
    <enumeration value="seating">
      <annotation>
        <documentation>The increment belongs to the seating or pre-loading cycle applied before the test proper - the seating load being applied or, afterwards, released - and its settlement is not part of the loading curve.</documentation>
      </annotation>
    </enumeration>
  </restriction>
</simpleType>