Investigate the Impact of Response Reduction Factors and Height-To-Depth Ratio on Seismic Performance Metrics in the Elevated Storage Tank

• DOI: 10.54740/ros.2025.011
• Publication Date: 2025-03-16T15:40:36Z
• Authors: Bhupesh Nandurkar; Dhiraj Agrawal; Abdullah Naser M....; Pawan Hinge; Tinku Biswas; Sheela Malik; Khalid Ansari; Saiful Islam

Water tanks are critical structure, and the investigation of seismic activity is now receiving significant attention. This study examines the impact of the revised Indian Standard IS 1893 (Part 2): 2014, which was implemented in March 2022, on the seismic performance of elevated water tanks. The IITK-GSDMA Guidelines (IITK-GSDMA 2007) impacted these improvements, especially those dealing with response reduction factors. The modifications are assessed by contrasting the prior code with base shear, hydrodynamic pressure, base moment, and sloshing wave height calculations. This assessment examines ten models with 50 cubic-meter elevated water tanks. These models have different height-to-diameter ratio (h/D) ratios. The response reduction factor affects deflection, hydrodynamic pressure, moment, and base shear. These parameters usually decrease with higher response reduction factor values. As the h/D ratio increases beyond 0.5, deformation and seismic forces decrease.