Published Paper Details:

Bearing capacity evaluations of shallow foundations in the case of spatially variable soils are currently used primarily for two- dimensional analysis. One of the reasons for this situation is numerical efficiency, which limits the use of three-dimensional finite element formulations for random analyses. However, recent attempts have been made to solve such issues, Moreover, most existing probabilistic methods have been applied to single-layered soil. However, from an engineering perspective, two- layered soil is also a highly probable situation. An especially important situation is when the bottom layer is a soft soil and the top layer is a strong soil. This scenario has been extensively examined in the case of deterministic analyses however, there have been very few studies on random analyses of two- layered soil. It is worth mentioning that, it is possible to perform these types of two-dimensional analyses.In the present study soil exploration has been executed in the two fields at two locations. Undisturbed & Disturbed soil samples has been collected up to the maximum depth of 25 m below ground level for each of the two locations. The locations are Hedua (Site - 1) and Canning (Site - 2) which are situated in Kolkata. Engineering Properties of soil samples has been determined by routine tests from two above mentioned sites and further evaluation has been made for the types of foundation required for a (G+3) storied building. The ultimate bearing capacity, safe bearing capacity, safe load and corresponding settlement analysis of different shallow foundations has been made. Further model study has been executed by finite element analysis using PLAXIS 3D software for the pre-decided foundation dimension and ultimately a comparative study has been made between those capacities and corresponding settlement for two different locations used in the present study with the values obtained from finite element analysis obtained from PLAXIS 3D.