Abstract: The availability of safe and reliable drinking water is one of the major challenges in rural India, especially under large-scale programs like the Jal Jeevan Mission. The present study focuses on the analysis and design of Elevated Service Reservoir (ESR) using precast staging and Galvalume tank system as an alternative to conventional RCC construction. The objective of the study is to develop a fast, economical, and structurally efficient ESR system suitable for different heights, capacities, and seismic zones. In this research, a modular precast H-frame staging system is adopted, where only the foundation is constructed using cast-in-situ RCC, and the superstructure is assembled using precast elements. The water storage tank is made of Galvalume steel, which is lightweight, corrosion-resistant, and easy to install. The structural analysis is carried out using ETABS software by considering different load combinations as per IS 875 and IS 1893, including dead load, live load, wind load, and seismic load. The ESR models are analyzed for different staging heights (12 m to 21 m) and seismic zones (II to IV). The results obtained include displacement, base shear, axial forces, bending moments, and time period. It is observed that the maximum displacement values are within permissible limits, and the structure remains stable under all loading conditions. The base shear is significantly reduced due to the reduced self-weight of the precast system compared to conventional RCC ESR. The time period increases with height, indicating flexibility, but remains within safe limits. A comparative analysis between conventional RCC ESR and precast ESR shows that the proposed system results in 30–35% reduction in structural weight, 20–25% cost saving, and nearly 50% reduction in construction time. The modular construction approach ensures ease of manufacturing, transportation, and assembly, making it highly suitable for rural and remote areas. The study concludes that the precast ESR system with Galvalume tank is a safe, efficient, and practical solution for large-scale implementation under Jal Jeevan Mission. It not only improves structural performance but also enhances construction speed and quality, making it a sustainable approach for modern water supply infrastructure.
Nagpurkar et al. (Thu,) studied this question.