Bearing Capacity of Shallow Foundations on Unsaturated Silty Soils

In general, the ultimate bearing capacity (UBC) of shallow foundations on unsaturated soils is characterized by conventional shear strength (SS) parameters in which saturated theories are applied. However, this case, it clear that designed using obtained values from cases not be economical. recent years, procedures have been developed to estimate UBC soils, take into account drained and undrained loading conditions. these studies generally concentrate sandy soils. The validity results proposed literature should tested for other Therefore, paper includes a direct box (DSB) test determine SS statically compacted silty soil, series model tests were performed foundation’s UBC. experimental setup, different types sizes soil layers with saturation degrees (SSDs)/matric suctions (MSs) void ratio measured. addition, soil-water characteristic curves (SWCCs) silt obtained. Using results, new equation characterization equation, can determined based unconfined compressive (UC) measured samples degree fitting parameter. indicate via footing test, shows good consistency those equation.