Analysis of an R.C Corner Footing Subjected to Bi-axial Bending

An attempt is made to analyse the safety of an R.C corner footing, subject to biaxial bending, under various limit states. The footing is designed using the deterministic approach as per the provisions of present code IS 456-2000. The statistics of basic design variables are taken from the literature. The statistics of loading (axial load and moments) is not readily available in the literature. The same is generated using ETABS. A typical representative building is selected & statistics of axial load and moments (Mx & My) are generated for a given load combination. The generated data is statistically analysed and probabilistically modelled. The safety of the footing is analysed using AFOSM & Monte Carlo methods. Fiesler algorithm is adopted in AFOSM method. The limit states considered are, flexure, one way shear, two way shear & bearing. The resistance statistics and bias factors are established for different limit-states using Monte Carlo simulation. The present study forms an attempt for code- calibration towards LRFD format.