Slopes and Walls

Slope Repair

Helical Pier Systems' tie-back anchors are used for slope restoration / stabilization. Once the fault line has been found, anchors can be screwed in almost horizontally into more stable soil. Following installation, an appropriate retaining wall is attached, which helps maintain the slope integrity.

Every wall tieback situation is unique. The placement of the anchor is influenced by the height of the soil backfill against the wall. This image, shows this condition and a guideline for setting the location of the tieback anchor. Experience dictates that the tieback should be located close to the point of maximum wall bulge and/or close to the most severe transverse crack. The tieback placement location must be selected on a case-by-case basis.

Engineers must also consider the height of soil cover over the helical anchor. The image below also indicates that the minimum height of the cover is 6 times the diameter of the largest helical plate. The helical anchor must be installed a sufficient distance away from the wall in order that the helical plate(s) can develop an anchoring capacity by passive pressure. This requires the length of installation to be related to the height of soil backfill.