Secant Pile Wall Construction

Discover the expertise of Schnabel, a nationwide design-build company, in constructing reliable and structurally sound secant pile walls. Our solutions provide exceptional excavation support and serve as effective groundwater barriers.

With overlapping shafts forming a continuous concrete wall, secant pile walls exhibit remarkable stiffness. Our specialized drills ensure critical alignment, resulting in optimal effectiveness. Partner with us to achieve your most challenging construction goals through tailored secant pile wall construction, backed by decades of experience in earth and water retention solutions.

Secant Pile Wall Construction Solutions

Experience the power of secant pile walls, an integral part of Schnabel’s rigid and robust system for combining earth retention and groundwater cut-off capabilities. By drilling alternating primary and secondary overlapping shafts, we construct continuous secant walls. The concrete in the shafts can vary, comprising all low-strength, all high-strength, or a combination of primary and secondary shafts.

Steel piles or reinforcing steel further enhance the structural integrity of the secondary shafts. For specific needs, we construct unreinforced high-strength shafts in self-supporting circular rings, commonly used for access shafts to tunnels. Secant pile walls offer impermeability, controlling groundwater flow into excavations and minimizing drawdown outside. With exceptional stiffness, they are ideal for protecting sensitive structures.

Schnabel’s high torque drill rigs provide a significant advantage, penetrating hard-drilling conditions while casing the drill hole. Our expertise extends to advancing cased holes through various obstacles, including cobbles, boulders, and reinforced concrete. Trust us for cutoff wall construction using innovative secant pile techniques.

When faced with challenging drilling conditions, secant piles offer an economical solution for cutoff wall construction. Beyond cost-effectiveness, secant walls provide additional benefits, including lower mobilization costs compared to alternative cutoff wall types like slurry walls and soil mix walls. To determine if a secant wall is the right fit for your project, contact one of Schnabel’s eight regional offices today.

Discover the advantages of employing secant pile walls, which excel in difficult drilling conditions. Our experienced team can guide you through the decision-making process, ensuring that you benefit from cost-effective and efficient construction solutions tailored to your needs.

Revolutionizing Solutions: Embracing Innovation to Solve Long-standing Challenges.

secant pile contractors

Rondout West Branch Bypass Tunnel Shaft

Schnabel installed secant piles in a self-supporting circular ring to support the construction of a new bypass tunnel to allow water to flow under the Hudson River to New York City after an older tunnel started to leak.

secant piles

Barnes-Jewish Hospital

Schnabel designed and constructed a secant pile wall for the Barnes-Jewish Hospital Parkview Tower on the Washington University Medical Campus in St. Louis, Missouri. The perimeter secant wall served as both the permanent structural basement wall and the temporary earth-retention system for the new hospital building.

In 31 years of building deep foundation projects for Schnabel, building a 90’ deep reinforced circular shaft was one that was very challenging and deeply rewarding. Looking forward to working on the next one with our client Schiavone.
Paul Davis, Rondout West Branch Bypass Tunnel Shaft


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.