Designing a pool shell may seem pretty simple. The water in the pool counteracts much of the soil pressure pushing on on the opposite site of the pool walls. However, you have to consider what happens when the pool is emptied for maintenance. That is usually the most critical design case in swimming pool design.
The pool shown in these pictures was damaged by flying debris from a hurricane. The Owner drained the pool to make repairs, but the water table in that area was so high that the pool floated right up out of the ground. Depending on the depth of your water table and the weight of the pool shell, your pool may be susceptible to floating when the water is removed.
