Experimental Study on Conical Shell Footing

Abstract

Footings are often situated for weak soil of significant depth underlain by comparatively strong soil strata. The shell footings are capable of supporting higher vertical loads, better load settlement characteristics and are economical in terms of material compared with the conventional footings. The development in analysis and design of shell type foundations have led to the understanding that there are more advantages of shell type foundations compared to their conventional flat counterparts. The ultimate load carrying capacity of conical shell footing on dry sand were determined in the present paper by conducting laboratory model tests. The conical shell footing withpeak angles of 900 and 126.880were designed and the models were casted with s reinforced concrete. And the specimens were tested using loading frame system. The results indicate that the ultimate load carrying capacity of the footing increases with decrease in peak angle. The results were compared with calculated theoretical value.