In the early 1960s, pioneering researchers at Case Institute of Technology in Cleveland, OH were developing new methods of non destructive pile testing to support the industry trend toward more efficient high capacity deep foundations. Those new methods, and associated hardware and software solutions, included the Case Method of Pile Testing, the Pile Driving Analyzer, and the Wave Equation Analysis of Piles computer program. Being most knowledgeable about the capabilities of those new dynamic foundation testing approaches, the research team was frequently asked to provide consulting services to the deep foundations industry. Thus, the research team formed a consulting firm known today as GRL Engineers, Inc., or simply GRL.