In 1964, visionary researchers embarked on the project that pioneered dynamic pile testing by the Case Method (named after the Case Institute of Technology, now known as Case Western Reserve University, in Cleveland, OH). In 1976, the research team incorporated GRL to provide consulting services utilizing the Pile Driving Analyzer® (PDA) system for deep foundation quality control. Since its incorporation, GRL has continued to expand its capabilities in this field, most notably in the areas of wave equation technology, hammer performance evaluation and non-destructive testing methods.

Today, GRL Engineers service drilled shafts, driven piles, ACIP/CFA foundations, Micro and Helical Piles, Slurry Walls, Barrettes and more. Our services range from small testing jobs to large-scale projects requiring the monitoring and analysis of hundreds of foundation elements. In addition, GRL continues to engage in deep foundation testing research and education. GRL maintains a quick, cost-effective responsiveness to client needs throughout the United States, the Caribbean, Central America and Northern South America. GRL also performs offshore foundation testing work and other complex jobs in countries across the globe2.

Nationally recognized and veteran foundation tester Patrick Hannigan, P.E. succeeded Frank Rausche at the helm of GRL in 2011. GRL’s central office and ten branch offices are staffed by more than 30 highly accomplished engineers, many with advanced degrees and 10 or more years of experience. Most GRL Engineers have achieved Advanced Level or higher on the PDCA/PDI Dynamic Measurement and Analysis Proficiency Test.