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GRLWEAP is a one-dimensional Wave Equation Analysis program that simulates pile response to pile driving equipment. This allows our engineers to predict driving stresses, hammer performance and the relationship between pile bearing capacity and net set per blow (inverse of blow count per unit depth). It also estimates the total driving time.

The analysis allows Pile Analysis to investigate which hammer is likely to be sufficient and economic for the piles you want to install and the soil conditions prevalent at the site prior to mobilizing a hammer to the job. Pile Analysis Engineers perform Wave Equation Analyses (GRLWEAP) to find the relationship between bearing capacity, pile stress and blow count, known as the “bearing graph.”

Given the blow count from pile installation logs, the bearing graph yields the bearing capacity. Given a required ultimate capacity, the bearing graph indicates the associated blow count. The bearing graph also shows the maximum tension and compression stresses. Pile Analysis Engineers also use the GRLWEAP software to perform driveability analyses.

A driveability analysis produces a safe prescription for pile installation, including recommendations on cushion stiffness, hammer stroke and other driving system parameters that optimize blow counts and pile stresses during pile driving (for example if a soft or hard layer causes excessive tension or compression stresses or unacceptable blow counts). The driveability analysis output gives the pile drive time allowing estimators to more accurately cost the project.

Pile Analysis Engineers have unrivalled expertise in GRLWEAP analysis. Contact us so that we can help you decide what set-up will produce the safest and most cost efficient pile driving on your project.