This article addresses many of the questions users have with regards to the theoretical basis of Slide.

  1. How does Slide incorporate compressibility in transient seepage analyses?

  2. What does Slide do with pressure head?

  3. How does pore pressure influence the results in a slope stability analysis?

  4. What is the difference between the water table and piezometric lines?

  5. Is the factor of safety for slope stability affected by negative pore pressures?