<p><p><figure id='attachment_2791' style='max-width:1024px' class='caption alignnone'><img class="wp-image-2791 size-large" src="https://www.geoinstitute.org/sites/default/files/geotech-tools-uploads/…; alt="Photograph showing the installation of ground anchors to stabilize a loess bluff prior to installation of a mechanically stabilized earth wall." width="1024" height="6

<p><p><strong>References:<br></strong><em>Berg et al. (2009a,b)</em></p><p><strong>Method Summary</strong></p><p>Observation of the construction activities will ensure that the construction is being performed to specification and in accordance with the details shown on the plans. Activities requiring monitoring include:<br><ul> <li>Foundation preparation</li> <li>Drainage installation</li> <li>Construction of shoring wall (see Lazarte et al. 2003 and Tanyu et al.

<p><p><strong>Current FHWA Reference(s):<br></strong><em>Morrison et al. (2006b)</em><strong>Supporting Reference(s):<br></strong><em>Berg et al. (2009)<br>Morrison et al. (2006a, 2006c, 2007)</em></p><p>The FHWA guideline for the design of shored mechanically stabilized earth wall systems essentially follows the Morrison et al. (2006b) method and incorporates the stabilizing effects of the shoring wall component in the design of the MSE wall component.

<p><p><strong>References:<br></strong><em>Berg et al. (2009a,b)</em></p><p><strong>Method Summary</strong></p><p>Inspection of all the materials used in the construction of the SMSE wall is done to confirm that appropriate materials meeting specification requirements are delivered to the construction site and to prevent damaged materials from being used during construction.

Liquefaction Potential Assessment

The design procedure for Shored Mechanically Stabilized Earth Walls is given in the reference manual by Morrison et al (2006):

http://www.geotechnicaldirectory.com/publications/MSE-Wall/MSE-Wall-Design-Manual.pdf

This document provides detailed procedures for the global and internal designs for seismic loading conditions.

<p><p><strong>References:<br></strong><em>Berg et al. (2009a,b)</em></p><p><strong>Method Summary</strong></p><p>Performance monitoring can be done with a limited or comprehensive program.

<p><p><strong>References:<br></strong><em>Berg et al. (2009a,b)</em></p><p><strong>Method Summary</strong></p><p>Each material used in the construction of the shored MSE wall should be tested to ensure conformance to the specifications prior to approval for use in construction.

<p><p><h2>Commentary</h2>This technology combines soil nailing as a shoring system with mechanically stabilized earth wall systems.

<p><p><figure id='attachment_2630' style='max-width:658px' class='caption aligncenter'><img class="wp-image-2630 size-full" src="https://www.geoinstitute.org/sites/default/files/geotech-tools-uploads/…; alt="Schematic diagram showing a shored mechanically stabilized earth wall system.

<p><p><div><h2>Project Summary/Scope:</h2>The construction was to replace 300 meters of an existing roadway with a new roadway with wider shoulders. The road is located next to the Snake River. Cut and fill was not an option for two reasons. The first was bank erosion from the river causing a landslide to occur in a 20-meter bank below the roadway. The second was because of a creeping landslide extending 450 meters above the roadway. A retaining wall system would have to be put in place in order to widen the road and to stabilize the landslides.