Comparitive Study of Plain Foundations with Shell Foundations

Abstract

The spread footing for columns transmitting heavy load to weak Soils tends to be massive, if rafts are provided. Shell foundation can serve as better replacement to plain foundation as economic alternative where heavy super structural loads are to be transmitted to weaker soils. The substitution of shell foundations for spread footings and rafts can therefore lead to considerable saving in concrete and reinforcing steel.The sector of spherical dome, in inverted positions can serve as rafts for structures such as water tanks.