Apply Concurrent Water Filling for Stability

What happens here

To counteract the external pressure from the backfill, water is introduced into the pool, creating an outward hydrostatic pressure that directly pushes against the pool walls. This internal water acts as a counterbalance, preventing the inward movement of the walls. The process requires careful synchronization: as backfill material (stone) is added around the exterior of the pool, the water level inside the pool must be raised proportionally. The video shows that neither the water fill nor the backfilling is complete, indicating a continuous, phased approach where both activities proceed concurrently until the final desired levels (like the patio level) are reached.

Goal: Successfully apply hydrostatic balance by concurrently filling the pool with water as backfill progresses.