<p><p><strong>References:<br></strong><em>Bruce and Juran (1997)<br>Cadden et al. (2004)<br>Sabatini et al. (2005)</em></p><p><strong>Method Summary</strong></p><p>Strain gauges can be mounted on the reinforcing steel at different elevation to determine the axial load distribution and to evaluate micropile bending moments with depth.</p><p><strong>Accuracy and Precision</strong></p><p>The accuracy and precision of the strain gauges is dependent on avoiding damage to the gauge and connecting wires during installation.</p><p><strong>Adequacy of Coverage</strong></p><p>A large number of strain gauges are required to provide an accurate assessment of strain with depth.</p><p><strong>Implementation Requirements </strong></p><p>Great care must be taken during installation to avoid damage to the gauge and connecting wires.</p><p><strong>General Comments</strong></p><p>If used, vibrating-wire-type strain gauges are recommended. Strain gauges, as well as other instrumentation, are not common tools for testing and monitoring micropiles. Strain gauges should not be intended to control a micropile quality assurance program.</p></p>