<p><p><figure id='attachment_3557' style='max-width:532px' class='caption aligncenter'><img class="wp-image-3557 size-full" src="https://www.geoinstitute.org/sites/default/files/geotech-tools-uploads/…; alt="Overhead photograph showing Tampa Terminal Tank Farm and location of rapid impact compaction project." width="532" height="268" /><figcaption class='caption-text'> Tampa Terminal Tank Fields. (GeoStructures, Inc., 2009)</figcaption></figure></p><p><div><h2>Project Summary/Scope:</h2>The project consisted of the relocation of a 43,000 barrel tank onto a site that was susceptible to total and differential settlements.</p><p>Subsurface Conditions: The site was underlain by groundwater at a depth of 3 feet (1 meter) below ground surface and loose sands that could have caused excessive total and differential settlements.</p><p>Rapid impact compaction was chosen to improve the soils to a depth of approximately 20 feet (6 meters) below the ground surface in order to reduce the effects of settlement. Rapid impact compaction improved the soil shear strength to depths up to 30 feet in high groundwater sands.<br><h2>Alternate Technologies:</h2>Alternative technologies included excavation and replacement, dynamic compaction, and pile foundations.</p><p><figure id='attachment_3559' style='max-width:336px' class='caption aligncenter'><img class="wp-image-3559 size-full" src="https://www.geoinstitute.org/sites/default/files/geotech-tools-uploads/…; alt="Graph showing improvement in standard penetration test blowcounts after treatment." width="336" height="333" /><figcaption class='caption-text'> RIC Improvement at Tampa Tank 6. (GeoStructures, Inc., 2009)</figcaption></figure><h2>Performance Monitoring:</h2>Post-treatment soil borings and CPTs were used to monitor performance. The soil’s SPT N-values were increased to depths up to 30 feet (9 meters) below the ground surface.<br><h2>Project Technical Paper:</h2><strong> </strong>GeoStructures, Inc. (2009). Tampa Terminal Tank 6.</p><p>Retrieved from: <a href="http://www.geostructures.com/downloads/types%20of%20structures-pdfs/RIC… Case History Prepared:</h2><strong> </strong>November 2012</p><p></div></p></p>