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Our helical anchors, tiebacks and soil nails are designed by expert geotechnical and structural engineers and installed by an exclusive network of approved contractors.
Helical anchors, tiebacks and soil nails are factory manufactured steel elements designed to provide tension resistance in either vertical or horizontal applications—such as guy wire support, uplift resistance due to wind or buoyancy effects, and lateral resistance for concrete retaining walls, seawalls, sheet piling, shotcrete walls and other earth retention systems. These tension elements are advanced into the ground by the application of torque.
Predictable capacity
Vibration-free installation
Low mobilization costs
All-weather installation
Spoil-free installation
Immediate construction after installation
Limited-access installation
Allows for even heavy traffic just 15 minutes after completion
The helical anchor or tieback system consists of a central shaft with one or more helix-shaped bearing plates welded to the lead section. Extension sections are used to advance the lead section to bear within competent soil, beyond any active zone or estimated failure plane. The helical soil nail system consists of lead and extension sections with equal-diameter helix-shaped plates spaced evenly along the entire length of the central shaft. Soil nails are typically installed in a grid pattern within the soil mass to create an internally stable gravity wall/retaining system.
1.5″ and 1.75″
Standard solid square shafts (hollow round
shaft and larger square shaft sizes available)
6″ to 16″
Standard helix
plate diameters
32.5 to 50 kips
(FOS = 2.0) Torque-correlated
allowable soil capacities
