<p><p><strong>Reference(s):</strong></p><p><em>Christopher et al. (2010)<br>Holtz et al. (2008)</em></p><p><strong>Method Summary</strong></p><p>A clear and concise procedure for installing geosynthetics in base courses for reinforcement is important to make sure design assumptions are met during installation. It is important to verify that the roadway is properly grubbed and cleared of all vegetation and debris. During construction, observations can be made to identify problem areas. It is also important to verify that the geosynthetic is properly placed, lapped, connected together if required, and conditioned (pre-stressing the geosynthetic with wheel loads) if called for. Verification of the location of the geosynthetic in the base course is also critical to make sure that the geosynthetic meets the design intent.</p><p><strong>Accuracy and Precision</strong></p><p>Accuracy and precision of the installation procedures will be determined by the thoroughness of the observations and the thoroughness of the specifications. These observations are subjective and accuracy and precision depends on the experience of the contractor and inspector.</p><p><strong>Adequacy of Coverage</strong></p><p>Adequacy and coverage of the installation procedures will be determined by the thoroughness of the observations and the specifications.</p><p><strong>Implementation Requirements </strong></p><p>Implementation of installation standards and observations are straight forward and easy to incorporate into a QC/QA procedure.</p><p><strong>General Comments</strong></p><p>Observations and proof rolling during construction can identify critical areas that may require additional measures to ensure the pavement system performs as required. These observations will also enhance the thoroughness of laboratory and field tests discussed earlier.</p></p>
Title
Construction Observations