<p><p><strong>References:<br></strong><em>Building Research Establishment (2003)<br>Kristiansen and Davies (2004)<br>SAICE (2006)<br>Simpson et al. (2008)</em></p><p><strong>Method Summary</strong></p><p>The RIC employs an on-board computer to control the compaction process, set termination criteria, and record critical data. The data are exported to a personal computer for further analysis (SAICE 2006).</p><p>The acquired data at each impact point include:<br><ul> <li>Time of compaction.</li> <li>Total blow count.</li> <li>Final set (mm).</li> <li>Final depth achieved (mm).</li> <li>Total energy input (kn∙m).</li></ul>The deflection of the soils is monitored on a per-blow basis to determine when compaction of the soil is complete (i.e., when additional blow counts will not be effective) (SAICE 2006).</p><p>The termination criteria are established based on the soil conditions and the amount of compaction required. Potential termination criteria include the number of blows required at each impact point and the final deflection, or set, in mm (e.g., 60 blows per impact point and a final set point of 5 mm [0.20 inches]) (SAICE 2006).</p><p>Alarms can be set to notify the operator when any operating parameter reaches a specified value (e.g., total settlement or set per blow) (Building Research Establishment 2003).</p><p><strong>Accuracy and Precision</strong></p><p>The level of accuracy and precision of this procedure has not been documented.</p><p><strong>Adequacy of Coverage</strong></p><p>The operator monitors the number of blows on every print position and ensures that the minimum energy level indicated by the penetration testing is supplied.</p><p><strong>Implementation Requirements </strong></p><p>Very specialized equipment is required, exclusive to an RIC licensee.</p><p><strong>General Comments</strong></p><p>This technique is applicable to process control and equipment performance.</p></p>