Rocscience International Conference 2025 is going to take place in Sydney, Australia Read more

Search Results

Optional Capacity Considerations

Optional Capacity Considerations (only for Ultimate Capacity calculations) can be used for Driven and Bored pile analysis. The Driven analysis also has additional Groundwater options.

To access the Optional Capacity Considerations dialog:

  1. In the Project Settings dialog, ensure your Program Mode Selection is set to Capacity Calculations.
  2. Select Home > Optional Capacity Considerations optional capacity considerations


  • Soft Compressible Soils
  • Scourable Soil

These optional capacity considerations are mutually exclusive; both options cannot be selected at the same time.


A depth of soft compressible soil at the top of the soil profile can be specified. For ultimate calculations, the shaft resistance from the soft soil layer can be considered as soft compressible soil or as negative skin friction.

If the shaft resistance is considered to be soft, the skin friction for the layer is not included in the ultimate skin friction. If negative skin friction is considered, the skin friction from the soft soil layer is considered to be negative and is subtracted from the total skin friction for ultimate capacity computations.


There are two types of scouring that can be considered: long-term and short-term (local) scour. For short-term scour, the shear stress is simply reduced to zero. This occurs due to erosion around the pile. The effective overburden pressure is not affected due to the presence of soil away from the local pile area. No end bearing can be placed above this level.

For long-term scour, the effective overburden stress is reduced to zero until the scour consideration depth. This is due to soil eroding over a large area, reducing the effective overburden stress. DRIVEN stacks the effects of both scour types, where long-term scour is first considered then local scour is applied below the long-term scour depth.

Rocscience logo, click here to return to the homepage Portal Account Portal Account Log In Log Out Home Shopping Cart icon Click here to search our site Click here to close Learning Tech Support Documentation Info Chevron Delete Back to Top View More" Previous Next PDF File Calendar Location Language Fees Video Click here to visit Rocscience's LinkedIn page Click here to visit Rocscience's YouTube page Click here to visit Rocscience's X page Click here to visit Rocscience's Facebook page Click here to visit Rocscience's Instagram page Click here to visit Rocscience's Reddit page Bookmark Network Scroll down for more Checkmark Download Print Back to top Single User Multiple Users RSLog RocFall3 CPillar Dips EX3 RocFall RocPlane RocSlope3 RocSupport RocTopple RS2 RS3 RSData RSPile Settle3 Slide2 Slide3 SWedge UnWedge RocTunnel RocSlope2 Commercial License Education License Trial License Shop safe & secure Money-back guarantee