Tangent Pile Wall Construction

Choose Schnabel, a leading nationwide design-build company specializing in constructing reliable and structurally sound secant and tangent pile walls. Our expertly crafted walls offer exceptional excavation support and serve as effective groundwater barriers.

With overlapping shafts forming a continuous concrete wall, secant pile walls provide robust structural integrity, while tangent piles offer a touch-together configuration. Rely on Schnabel’s decades of experience in tailored earth- and water-retention solutions to meet your most challenging construction goals.

Tangent Pile Wall Construction Solutions

Discover the power of secant and tangent pile walls, integral components of Schnabel’s rigid and robust system for earth retention and groundwater cut-off. Our construction process involves drilling alternating primary and secondary overlapping shafts, forming continuous secant walls. Concrete in the shafts can vary in strength, with options for low-strength primary and high-strength secondary shafts, reinforced with steel piles, or reinforcing steel.

Tangent piles offer a touching configuration without overlapping. Experience the impermeability of secant pile walls, controlling groundwater flow and minimizing drawdown outside excavations, while providing exceptional stiffness to protect sensitive structures.

Benefit from Schnabel’s advanced high torque drill rigs, capable of penetrating hard-drilling conditions and casing the drill hole simultaneously. Trust our expertise in navigating obstacles like cobbles, boulders, and reinforced concrete for efficient cutoff wall construction.

When challenging drilling conditions loom, secant and tangent piles present economical solutions for cutoff wall construction. Schnabel’s expertise extends to secant walls, offering cost-effective alternatives to slurry walls and soil mix walls.

Explore the advantages of mobilizing with ease and the potential cost savings. To determine if secant or tangent pile walls are the right fit for your project, contact one of Schnabel’s eight regional offices today. Benefit from our comprehensive knowledge and discover the ideal solution for your construction needs.

Always innovating new approaches to better solve old problems.

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.