We use a program called GRLWEAP from Pile Dynamics, Inc (PDI) to complete a driving analysis for a given project. GRLWEAP uses a one-dimensional Wave Equation to model the pile response to driving. The program predicts the driving stress, hammer performance and the relation between pile bearing capacity and net set per blow. GRLWEAP not only does vertical pile but also battered piles (driven at an angle) and horizontal piles (culverts). A site specific analysis will be completed for each site using the given soils onsite, the selected pile size and the selected driving hammer. We also use the program to complete a drivability analysis for the project. As we recommend in our geotechnical reports, this should be used to determine the final depth of the pile based on the anticipated loads.