Schnabel provides a wide variety of measures and solutions for landslide stabilization including tiedback permanent walls, tiedback discrete structural elements, soldier piles, secant piles and Soil nailing.

A leading Geostructural Design & Construction contractor, Schnabel has the expertise to provide effective landslide repair and control services, based on unique project needs and challenging environmental conditions.

Landslide Stabilization Solutions

A landslide occurs when the driving forces on a soil mass exceed the internal resisting forces of that soil mass and the land starts to move. Schnabel’s landslide repair services utilize proven techniques to stop or prevent a landslide, whether it’s installing tieback anchors, soldier piles, and/or micropiles to provide additional external resisting force.

Tieback anchors provide the most positive and cost-effective landslide repair solution in many circumstances. If the site cannot accommodate mass excavation, or if the soil along the failure surface is difficult to drain, tieback anchors may be the only practical solution. At other times, tiebacks in combination with one or more other methods may work best.

Tieback walls constructed to control landslides are designed to increase the resisting forces to a predetermined factor of safety. The wall can be located within the slope to provide the resisting forces in an optimal direction. They can also be installed with minimal site disturbance.

The tiebacks are anchored through the wall in competent soil or rock below the slope failure surface. In some situations, the tieback loads are distributed directly to the soil with discrete concrete elements rather than a wall. Often, these walls or elements are buried within the slope and the slope is re-vegetated to its original condition.

With more than a half-century of experience, Schnabel provides innovative, cost-effective landslide repair services. To learn more, contact our team today.


Landslide Stabilization Case Studies

Landslide Stabilization

Gallatin County Landslide Repair | Warsaw, KY

The Kentucky Transportation Cabinet (KYTC) contracted Schnabel to reconstruct a 1.25-mile-long section of the U.S. 42 highway that has been prone to landslides. Schnabel successfully installed a tieback retaining wall to help stabilize the existing landslides, which allowed the highway to reopen five months ahead of schedule and just in time for Memorial Day weekend.

Landslide Stabilization

Cal-Poly Landslide Stabilization | San Luis Obispo, CA

In 2017, a landslide on the Cal-Poly San Luis Obispo Campus caused an evacuation of the Fremont Dorm. Schnabel designed and built the earth retention system used to stabilize the slide and served as the general contractor for the project. This project received the 2023 CalGeo Project of the Year Award and the 2023 APWA Public Works Project of the Year Award.

Schnabel constructed a permanent tieback wall to stabilize an old landslide so that previously unusable land could be used to construct a new senior care facility. Schnabel worked closely with design consultant Cotton, Shires and Associates to produce a design that would stabilize a large slide close to numerous fault lines. This required deep soldier piles and high capacity tiebacks up to 150-foot long.

Harry W. Schnabel, P.E.


Schnabel is the sector’s most operationally efficient Geostructural Design & Construction contractor. We optimize efficiencies by leveraging decades of experience and design/build expertise to innovate processes and approaches that are consistently proven to deliver optimal outcomes for our clients.