Deep Foundation Testing, Analysis, and Consulting Services. 

GRL Engineers services range from small specialized testing jobs (such as evaluating unknown foundations)
to large-scale projects requiring the monitoring and analysis of hundreds of test piles nationwide.

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Statement of

QUALIFICATIONS

GRL Engineers, Inc, is a professional engineering firm established to provide specialized foundation testing, analysis, and consulting services to the deep foundation industry. GRL operates the largest dynamic pile testing firm in the world, as well as an industry leading provider of integrity test methods for deep foundations including thermal integrity profiling, cross-hole sonic logging, and low strain integrity testing.

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Services

Testing & Consulting

GRL Engineers offer a wide range of deep foundation testing and consulting services, nationwide. Most GRL Engineers have achieved Advanced Level or higher on both the PDCA/PDI Dynamic Measurement and Analysis Proficiency Test. 

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Projects

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Remote SQUID Testing at Frankfort Road over Raccoon Creek – ECMS 101165
Challenge: GRL Engineers, Inc., provided drilled shaft base cleanliness testing services for the Frankfort Road over Raccoon Creek Bridge Replacement Project in Monaca, PA. GRL was contracted in 2025 to provide SQUID testing, a quick and reliable method to obtain quantitative measurements of the debris thickness at the bottom of…
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Rigid Inclusion Test Piles for Retaining Walls
Challenge: A railroad track extension project in Kansas City necessitated the construction of three retaining walls. Soil improvements required precast retaining walls initially designed as rammed aggregate piers. The contractor proposed rigid inclusions (non-reinforced auger-cast-in place piles (ACIP)) as an alternative foundation type. The initial design included 24-inch diameter ACIP…
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Cross-Border Testing on the Gordie Howe Bridge
Challenge: GRL Engineers provided deep foundation testing services for the landmark Gordie Howe International Bridge for both the United States and Canadian sides. The bridge has the longest main span of any cable-stayed bridge in North America, spanning 2,800 ft. GRL provided deep foundation recommendations and testing services starting in…
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