<p><p><strong>Reference(s):</strong></p><p><em>Dearstyne and Newman (1963)</em></p><p><strong>Method Summary</strong></p><p>Dearstyne and Newman (1963) used this method where the subgrade under an existing pavement was stabilized using electro-chemical process. The process described in that reference involved using a 45,000-lb crash truck and measuring deflections at the surface using dial gauges based on a reference elevation. Similar testing called Benkelman beam testing is commonly performed in pavement evaluations. FWD testing described in plate load test procedures can also be performed to evaluate deflections under loading. This test procedure is strictly a QA technique.</p><p><strong>Accuracy and Precision</strong></p><p>Accuracy and precision of this test method has not been evaluated.</p><p><strong>Adequacy of Coverage</strong></p><p>Sufficient evaluation requires many tests. The number of tests depends on the variability observed on-site.</p><p><strong>Implementation Requirements </strong></p><p>Some experience and special equipment are necessary. If FWD is used, it is trailer mounted and is pulled with a truck. Experience and training are necessary if FWD tests are performed.</p><p><strong>General Comments</strong></p><p>This test method provides a measure of the support capacity and can serve as a good QA measurement.</p></p>