GRLWEAP is a one-dimensional Wave Equation Analysis program that simulates the pile response to pile driving equipment.

GRLWEAP predicts driving stresses, hammer performance and the relation between pile bearing capacity and net set per blow (inverse of blow count per unit depth). It also estimates the total driving time. This allows the user to investigate which hammer is likely to be sufficient and economic for a certain pile and soil condition prior to mobilizing the hammer to the job.

GRLWEAP has a very user friendly interface that includes more than 700 preprogrammed hammers, extensive help, and numerous automatic features. Extended options include driveability analysis, various stroke options for diesel hammers, soil sensitivity analysis, and models for parallel or composite piles.