• The overall foundation stability may be assessed using a phased method with three steps increasing in order of complexity:
      • Step 1: Preload and Sliding Check.
          • The foundation capacity check is based on the preloading capability. Sliding of the windward leg is also checked. Loads from pinned footing analysis.
      • Step 2: Bearing Capacity Check.
          • Step 2a: Bearing capacity check, based on resultant loading, assuming a pinned footing. Also check sliding.
          • Step 2b: Bearing capacity check, including rotational, vertical and translational foundation stiffness.
      • Step 3: Displacement Check. The displacement check requires the calculation of the displacements associated with an overload situation arising from Step 2b.
  • Any higher level check need only be performed if the lower level check fails to meet the foundation acceptance criteria given in the latest version of SNAME standard.