This structural detail drawing illustrates a dual-compartment water storage system comprising a portable water tank and fire storage tank with a dedicated pump room. The cistern features 200mm thick reinforced concrete walls with Ø12@200mm centers for both vertical and horizontal rebar on each face. The 200mm thick slab utilizes the same reinforcement pattern (Ø12@200mm OC) for top and bottom bars. The section view reveals a footing tie beam supporting the structure and a detachable slab for maintenance access. The tank is designed with different ground levels – finished floor level and existing ground level – with a 150mm thick RC wall section using Ø12@200mm OC vertical and horizontal bars. The plan indicates a grid-based structural system with main dimensions of approximately 11000mm for the overall width. This underground water storage solution provides dual-purpose functionality while maintaining structural integrity through consistent rebar spacing patterns; particularly important for water-retaining structures where crack control is essential.
Reinforced Concrete Cistern Tank Detail with Dual Storage System
