Re-design and construction of a precast panel water tank :

Abstract

This research addresses the challenge of water quality deterioration in traditional water storage solutions, such as plastic and steel tanks, which promote the growth of microorganisms and pose significant health risks. The study focuses on the redesign, construction, and assembly of a precast panel water tank to provide a durable, low-maintenance, and safe alternative. The primary objective is to redesign and construct a precast slab water tank, with specific objectives including determining soil and concrete properties, redesigning the tank and its components, fabricating the tank, testing its performance, and conducting a financial analysis. The main objective of this research is to develop an efficient precast panel water tank, with specific objectives to determine soil and concrete properties, redesign the tank and its components, fabricate the tank, test its performance, and perform a financial analysis. The methodology involved extensive soil and concrete testing, redesign of tank components to enhance efficiency and reduce material wastage, and tank fabrication using precast concrete slabs. Performance testing and economic evaluations were conducted to ensure project viability. Key findings reveal that the redesigned tank serves multiple purposes and the soil foundation is suitable for light structures. The uniformly distributed aggregate sizes (6.3 to 28mm) enhance structural integrity. Population projections are crucial in determining the tank's storage capacity. Effective grouting minimizes leakages, and the economic analysis confirms the project's cost-effectiveness. The tank demonstrated a high efficiency rate of 95%. In conclusion, the study underscores the advantages of precast panel water tanks in maintaining water quality and cost efficiency. Recommendations for future research include examining water deterioration parameters, investigating the punching shear behaviour of composite slabs, and developing models to accurately predict punching shear capacity. Keywords: Water Storage, Precast Panel Concrete Tanks, Water Quality, Microorganism Growth, Structural Integrity, Economic Analysis, Punching Shear Behaviours, Composite Slabs