The conventional method of UG tank and swimming pool construction involves excavating the area, Preparing the bottom and slop of excavation, Binding, Placing of reinforcement/formwork, Bracing etc. before concreting and backfilling.
The structural design of the tank should take into account the earth pressure, water pressure, imposed load on top of the tank etc. The sizing of the tank members and the reinforcement provided should satisfy ultimate limit state requirement and serviceability limit state requirement. The tank should also be able to resist uplift due to ground water
