LPILE is a special-purpose and internationally recognized computer program based on rational procedures for analyzing a pile under lateral loading using the p-y method. LPILE solves the differential equation for a beam-column using a finite difference approach. The program computes deflection, bending moment, shear force and soil response over the length of the pile.

Nonlinear lateral load-transfer from the foundation to the soil is modeled using p-y curves generated internally using published recommendations for various types of soils, or user-inputted p-y curves. Specialized procedures are also available for computing p-y curves for layered soils and rocks.
Analysis of multiple load cases

With the first release dating back to 1986, LPILE has continuously been developed and improved to meet user needs and incorporate state-of-the-art literature and procedures.