Introduction

In early limit equilibrium slope stability analysis, slip surfaces were defined by the Grid and Radius method. Even though new methods have been developed, the Grid and Radius method is still used by many.

This example illustrates and discusses the use of a Grid and Radius method of specifying trial slip surfaces. In addition, this example highlights specific analyses where the Grid and Radius method is beneficial, and cases where obtaining a minimum factor of safety at the center of the grid is not possible.