Water storage structures play a vital role in municipal, industrial, and domestic water supply systems. The present project focuses on the analysis and design of a rectangular reinforced cement concrete (RCC) water tank using STAAD Pro software, in accordance with relevant Indian Standard codes such as IS 3370 and IS 456:2000. The study emphasizes the structural behavior of a ground-resting rectangular tank subjected to hydrostatic water pressure, soil pressure, self-weight, and other loading conditions.The design methodology incorporates both theoretical calculations and computer-based structural analysis to evaluate bending moments, shear forces, stresses, and deflections. A three-dimensional finite element model of the tank was developed in STAAD Pro, and results obtained from software analysis were compared with manual design procedures to ensure accuracy and safety. The tank dimensions considered are 12 m × 4 m × 2.5 m with a wall thickness of 400 mm. The study concludes that limit state method provides an economical and efficient design compared to the working stress method. The integration of software tools significantly reduces computational effort and improves design reliability, ensuring structural safety and serviceability of the water tank.
Shruthi et al. (2026) studied this question.