The founders of GRL are the researchers who developed the theories behind many of the testing services now offered by GRL. The tradition of continuous research and excellence in performance continues to this day.

This economic and reliable alternative to Static Load Tests evaluates bearing capacity of any type of deep foundation, using the Pile Driving Analyzer^® and CAPWAP^®. The APPLE system permits the testing of non-driven foundations.

Monitoring driven pile installation with the Pile Driving Analyzer^® reveals pile capacity at time of driving, driving stresses and hammer performance, and checks pile integrity. It may be performed by a GRL Engineer on site or remotely from an office, using the internet data transmission feature of the PDA model PAX.

This non destructive integrity test is so quick and simple that it permits investigating all foundation elements of a job site. It is performed with the Pile Integrity Tester on any type of concrete deep foundation.

Investigates the absence of cracks and voids and verifies concrete quality on shafts built with inspection tubes. Field results are complemented by Tomography analysis.

Increases the reliability of Standard Penetration Tests by measuring the energy transferred from the SPT hammer to the rod. Torque measurements evaluate soil setup.

Increases the reliability of the Becker Drill Test by measuring the energy transferred from the hammer to the Becker casing. Toe resistance may also be evaluated with CAPWAP^®.

Wave Equation Analyses performed in the pre-construction phase of a project help select the optimal combination of pile type, length and driving hammer. GRLWEAP realistically simulates pile driving.

GRL has a long tradition of offshore Pile Driving Monitoring and Dynamic Load Testing. Offshore foundation testing starts with GRLWEAP analysis, proceeds with Pile Driving Analyzer^® tests and CAPWAP^® analysis, and may also include Hammer Performance Analysis.

GRL has tools to assist in the evaluation of unknown foundation depth, evaluation of the integrity of the foundation element and, in some cases even load bearing capacity evaluation.

Evaluates the performance of pile driving hammers during test pile installation or during production pile driving.