Comparative Study of Different Foundation and Sidewall Systems for Large Storage Tanks

Abstract

R.C.C tanks are widely used to store large quantities of water, and ground resting tanks without top slab are being used worldwide in sewage treatment plants (STPs). The type of foundation system and sidewall system for tanks depends on the type of soil and height of the tank. The authors tried two types of foundation systems and three types of sidewall systems keeping the capacity of tank being constant. Comparisons were made to evaluate the best structural system in terms of load dispersion and economy. To understand the behavior of large storage tanks, an open tank of size 30 m × 15 m × 5.5 m (0.5 m freeboard) is considered. The analysis is carried out in STAAD-Pro and designs were done by manually and the comparisons made between each system, and the most economic combination of sidewall and foundation system was arrived.