What is excavation support?

Excavation support is used to support the sides of an excavation so that adjacent structures, streets, and utilities are undamaged.

We provide specialized excavation support systems (ESS) to accommodate the wide variety of subsurface conditions present throughout the United States.

Schnabel has the expertise to help you determine the solution you need.


Excavation Support Systems & Shoring Services

Also known as shoring, excavation support systems (ESSs) are designed to support the ground behind an excavation. The shoring may also be designed to resist groundwater pressure, building loads, construction traffic, roadways, railroads, and many other types of surcharge loads.

Shoring may be used to temporarily support the excavation until a new structure is built or it can be designed to permanently support the excavation. Permanent shoring differs from temporary shoring in that many of the components in permanent shoring incorporate protection from long-term corrosion.

The best type of shoring for a particular project depends on a number of factors including soil conditions, required stiffness, and whether or not a groundwater cut-off is required. Shoring systems provided by Schnabel include soldier piles and lagging, soil nailing, secant/tangent piles, deep soil mix walls, and sheet pile walls. Lateral support for the excavation support system is provided by tiebacks, soil nails, braces or by designing the vertical elements of the shoring to cantilever. Schnabel can design and install the shoring best suited for your project because we have experience in designing and constructing most of the methods currently used in the United States.

We’re continually focused on protecting our employees and clients from any unnecessary risk.

Capitol Crossing

Schnabel designed and installed over 100,000 square feet of excavation support for the Capitol Crossing project in Washington, DC. This project required several innovative solutions from Schnabel including soldier piles, lagging, tiebacks, braces, underpinning, single auger soil mix (SASM) walls, micropiles, and tiebacks.

Project Fusion

Schnabel designed and installed a 57,000 square foot temporary shoring system to support the construction of Norfolk Southern’s new two-tower corporate headquarters in Atlanta, Georgia.

The Capitol Crossing project was one of the most complicated shoring jobs in Schnabel’s history. The use of stiff single auger soil mix SASM walls based on deflection-based design resulted in the successful performance of the support of excavation adjacent to some historic and modern structures.

Harald Ludwig P.E., Capitol Crossing


Schnabel is the sector’s most operationally efficient Geostuctural 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.

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