Comprehensive study of cost, seismic & wind impacts on circular water tanks with varying cylindrical height-to-diameter ratio

Abstract

This study systematically assesses the cost and material efficiency of circular water tanks with varying capacities, closely examining the influence of cylindrical height-to-diameter (H/D) ratios within the range of 0.2 to 2.0. The investigation delves comprehensively into the effects of wind and seismic forces, accounting for both tank-filled and empty conditions across the entire spectrum of H/D ratios. The analysis specifically focuses on water storage capacities of 600, 700, 800, 900, 1000, 1100, and 1200 kiloliters. Employing an in-house Software Program developed for the Design of Elevated Circular Water Tanks and adhering to the guidelines of IS 3370:2021, the study conducts a thorough parameter comparison to reveal substantial cost savings achievable through strategic H/D ratio selection. Particularly noteworthy is the revelation that the H/D ratio optimizing cost aligns with the configuration that experiences minimal wind and seismic forces. Informed parameter choices emerge as a driving force behind considerable reductions in material consumption, underscoring the software program's efficacy as a pivotal tool for designing elevated water tanks, particularly in scenarios where conventional analysis and design software lack accessibility.