Project Summary/Scope: A county highway near Mankato, MN required realignment due to growth in the surrounding area.

<p><p><h2>Commentary</h2>Typical contract pay items and units of measurement used for Reinforced Soil Slopes (RSS) include the following:<br><ul> <li>Geosynthetic reinforced soils slope measured by the square foot or square yard of vertical face</li> <li>Embankment measured by the cubic yard</li></ul>The equipment used to construct reinforced soil slopes is common to highway construction projects; therefore, additional mobilization costs are negligible.</p><p>Other items of work associated with RSS that should b

<p><p><figure id='attachment_2622' style='max-width:650px' class='caption aligncenter'><img class="wp-image-2622 size-full" src="https://www.geoinstitute.org/sites/default/files/geotech-tools-uploads/…; alt="Schematic diagram showing reinforcement in a slope.

<p><p><strong>References:<br></strong><em>Berg et al. (2009)<br>Christopher et al. (1990a)</em></p><p><strong>Method Summary: </strong></p><p>RSS is cost-effective soil retaining structures that can tolerate much larger total and differential settlement than other type of retaining structures. The facing elements and backfill materials would affect the RSS settlement magnitude significantly.

<p><p><strong>References:<br></strong><em>Berg, et al. (2009),<br>Christopher, et al. (1990a),<br>Elias, et al. (2001a),<br>SHRP2 Phase I Technology Assessment (2008)</em></p><p><strong>Method Summary</strong></p><p>In this method material components are examined at the casting yard (for systems with precast elements) and on-site. The visual inspection should be performed on prefabricated materials.