Simplified Procedure for Calculating Bearing Capacity of Cohesionless Soil using Standard Penetration Test as an alternative to the I S 6403 Method

Abstract

This paper presents a simple and general procedure for calculating the bearing capacity of shallow foundations valid for strip, square, rectangular and circular footings; in cohesionless soils. As per Indian Standard IS:6403, 1981, the method of analysis ( general shear failure; local shear failure; or interpolation between the two) is decided on the basis of relative density of soil Dr for computing the bearing capacity. This is time consuming and requires precision at every step; more so if Dr is between 20% to 70% and interpolation is needed