Join one of our upcoming courses taking place around the world! Explore now

Search Results

Negative Pore Pressure Cutoff

The Negative Pore Pressure Cutoff option allows you to define a maximum value for negative pore pressure calculated above a water table. To use this option:

  1. Select the Groundwater page in Project Settings.
  2. Select the Negative pore pressure cutoff checkbox and enter a value.
  3. It does not matter if you enter a positive or negative value, Slide2 will automatically use the negative of the absolute value.

Negative pore pressure is used in shear strength calculations when Unsaturated Shear Strength parameters (Phib and Air Entry Value) are defined for a material. Negative pore pressures may be computed from finite element seepage analysis, water pressure grids, or above water tables or piezo lines.

If you are using Unsaturated Shear Strength parameters for a material, the Negative Pore Pressure Cutoff value allows you to limit the contribution of negative pore pressure to the material's shear strength. If you do NOT define a Negative Pore Pressure Cutoff value, then there is no upper limit on the values of negative pore pressure, and you may generate unrealistic high values of shear strength which may lead to unconservative high values of safety factor.

Portal Account 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" 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 Twitter page Click here to visit Rocscience's Facebook page Click here to visit Rocscience's Instagram page Bookmark Network Scroll down for more Checkmark Download Print Back to top Single User Multiple Users RSLog RocFall3 CPillar Dips EX3 RocFall RocPlane RocSupport RocSupport RocTopple RS2 RS3 RSData RSPile Settle3 Slide2 Slide3 SWedge UnWedge Commercial License Education License Trial License Shop safe & secure Money-back guarantee