Experimental study on eccentrically loaded rectangular footing on sand for embedded condition to enhance serviceability of structures

Abstract

After the introduction of Terzaghi’s theory in the field of geotechnical engineering regarding ultimate bearing capacity of shallow foundation, work has also been conducted in both experimental and theoretical in this field. But most of the studies were related to only vertically apply central loading on the footing. It is important to know durability of structure and the effect of various types of loading on bearing capacity of footing. At that point of time there was no study conducted regarding inclined loading and eccentrically loading on the footing. But later came the theory of Meyerhof in 1953 who suggested an empirical procedure regarding the estimation of ultimate (maximum) bearing capacity of shallow foundation for the eccentric loading condition. In the present experimental work, the sample tests have been computed to evaluate the maximum bearing capacity of shallow foundation for embedded condition in rectangular footing. Various test is carried out on sample footing of size 18 × 24 cm. The tests is carried out on dense sand. The relative density (Dr) of dense sand sustained during the test is 62.780 %. The eccentricity ratio is varied from 0 to 0.166 and depth is varied from 4.5 cm to 18 cm starting from 4.5 cm (0.25B). Maximum capacity of bearing has been computed for eccentric loading condition and enhancement in structural models was determined.