GRL Engineers, Inc. is a professional engineering firm that specializes in providing testing, analysis, and consulting services for the deep foundation industry world-wide. The firm was founded in 1975 by the Case Western Reserve University research team who investigated the basic concept of dynamic pile testing now known as Case Method and invented the Pile Driving Analyzer® (PDA). Since its incorporation, GRL has continued to expand its capabilities in this field through in-house research efforts and several funded studies, most notably in the area of wave equation technology and hammer performance evaluation.

The innovative pile testing methods originally developed by the principals of the firm are now applied worldwide, resulting in improved foundation solutions, better quality control and often significant savings of foundation costs or construction time. GRL engineers perform dynamic pile monitoring (on or offshore), dynamic load testing, integrity assessment of drilled shafts, augered cast in place and driven piles, driveability analysis, data review and training as well as research and development projects in the field of deep foundation testing systems.

GRL Engineers, Inc. maintains its corporate headquarters in Cleveland, OH with offices in Chicago, IL; Philadelphia, PA; Charlotte, NC; Orlando, FL; New Orleans, LA; Denver, CO and Los Angeles, CA. GRL engineers travel frequently throughout the United States as well as overseas and to offshore locations around the world.