A surcharge of 100 kPa is applied over a large area above the soil profile shown in the figure below. Calculate the degree of consolidation at Point A if the time factor Tv is equal to 0.2 (acceptable tolerance = 10%).

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Consolidation parameters

Consolidation is the process of expulsion of pore water present in the voids of soil solids under the pressure of the applied load. This is a quick process in the case of coarse-grained soils since the permeability is high due to the presence of more voids, while it is a slow and gradual process in the case of clayey soil as the permeability of clay is less. An example of consolidation is the settlement of soil under a building due to the load coming from the building.