<p><p><strong>References:<br></strong><em>Bruce (1997b)<br>Bruce and Juran (1997)<br>Gomez et al. (2008a, 2008b)<br>Sabatini et al. (2005)</em></p><p><strong>Method Summary</strong></p><p>A creep test is performed by measuring the movement of the micropile at a constant load over a specified period of time. Creep tests are conducted as part of ultimate, verification, and proof tests at specified load increments. Creep is potentially a concern in organic and soft cohesive soils with liquid limit greater than 50, in creep susceptible rocks (e.g., shale or weathered mélange), and in soils with a plasticity index greater than 20 (Sabatini et al. 2005).</p><p><strong>Accuracy and Precision</strong></p><p>Creep testing is a trusted and commonly performed procedure.</p><p><strong>Adequacy of Coverage</strong></p><p>The results of a creep test can be used to represent other micropiles of the same design in a project which were installed in similar subsurface conditions and construction processes.</p><p><strong>Implementation Requirements </strong></p><p>The requirements of creep testing are not excessive.</p><p><strong>General Comments</strong></p><p>Creep tests can be used to assess whether the service loads can be supported safely with an acceptable amount of micropile movement. The results of the creep test can be used as failure criterion for the load test. The test data should be plotted on a semi-log plot in order to interpret data correctly.</p></p>