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Undrained (A) and Undrained (B) are the recommended options for modeling the undrained behavior (applying effective stress analysis). Stiffness parameter inputs for Undrained (A) and Undrained (B) are in terms of effective stiffness; the bulk modulus of water is calculated accordingly. PLAXIS provides the SoilTest feature to test the soil model/parameters using commonly used laboratory test → This does NOT substitute the real laboratory test. Mohr-Coulomb model is certainly limited for capturing the real behavior of soil in undrained path → Advanced soil model should be considered (e.g. hardening soil).

DeepEX is a powerful advanced geotechnical application with all essential modules for the design and analysis of deep excavation projects. It is trusted by more than 2000 engineers and engineering companies worldwide. More than 10000 projects have been designed using DeepEX.

The understanding of unsaturated soil mechanics principles is of interest to a wide spectrum of geotechnical problems associated with soils above water table and compacted soils. Unsaturated soil between ground surface and water table is the interface zone between soil and environment. The unsaturated zone plays an important role in determining the impact of climate change such as increasingly frequent rainfall of high intensity or prolonged drought on geotechnical structures.