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.

Statement of

QUALIFICATIONS

GRL Engineers, Inc, is a professional engineering firm established to provide specialized 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.

Featured

Projects

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case histories >

SR23 First Coast Expressway

GRL Engineers was the SR23 project's Dynamic Testing Engineer (DTE) for the 26 bridges on 10.5 miles of new multi-lane limited access toll roadway to State Road 23, part of the First Coast Expressway. Prior to construction, a GRLWEAP pile driveability study was performed for initial hammer selection. Dynamic pile testing and monitoring was performed using a Pile Driving Analyzer and results were assessed with CAPWAP software to establish production pile driving criteria.

Lynch River Bridge Replacement

In Florence, South Carolina, GRL Engineers provided various testing methods for the Lynch River Bridge replacement. Prior to pouring concrete, a drilled shaft base cleanliness assessment was performed, followed by a drilled shaft verticality assessment. Once the shaft was determined acceptable, the concrete was poured and the instrumented cage was installed. After curing, the engineers used a bi-directional static load test to assess load capacity.

Northwest Railroad Bridge Project

In this case study, the northwest railroad project utilized GRLWEAP Wave Equation Analysis and Dynamic Load Testing on 3 indicator piles. Previous experience near the site indicated the potential for significant pile capacity increase with time. A restrike was performed in an unusual way to optimize the foundation.