API sand p-y curves in seconds with PileLAT

This blog shows how easily parameters for the API Sand p-y curve model are entered in PileLAT — with guided input fields, quick soil-layer assignment, and an instant ground-profile preview that updates dynamically as you work.

The API Sand p-y curve model, developed from the API RP 2A offshore design code, defines the nonlinear relationship between soil resistance (p) and lateral pile deflection (y) for sands under lateral loading. It captures both the initial stiffness and ultimate resistance of sand, allowing engineers to realistically model pile behavior under varying lateral loads.

In PileLAT, this p-y curve model is fully implemented and simplified for practical use:

• Automatic parameter input based on sand properties such as effective unit weight, friction angle, and subgrade modulus.

• Built-in API equations for ultimate resistance and modulus variation with depth.

• Layer-by-layer control, enabling users to model non-uniform sand deposits precisely.

• Instant p-y curve plotting to verify input and soil behavior before analysis.

Once the setup is complete, you can:

• Run rapid sensitivity checks on sand strength, pile stiffness, and load levels.

• Compare multiple design scenarios in seconds.

• Keep your focus on optimizing design for laterally loaded piles — not manual data entry.

Whether you’re designing offshore monopiles, jetty piles, or onshore retaining piles, PileLAT provides a fast, accurate, and intuitive platform to apply the API Sand p-y method with confidence.