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Frew Features - Advanced Analysis Options - Undrained to Drained Modeling


  1. initialise stresses with drained materials

  2. Switch to undrained soils

  3. Model sequence

  4. Apply estimated undrained pore pressure profile to undrained materials (no movement)

  5. Switch to drained parameters (no movement)

  6. Switch to long term pore pressures


Frew will now calculate the undrained pore pressure based on the Mohr Coulomb or Modified Cam Clay models. The user can do this by assigning a drained material to the undrained material in the Property Table (see below) and the program uses this as a basis for its pore pressure calculation.

This enables the user to bypass the manual sequence (outlined below) that was required for the modeling of drained to undrained soils and vice versa.

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