What is a crucial step before backfilling a tank excavation?

Before backfilling a tank excavation, it is essential to ensure that the excavation is properly prepared. This preparation includes creating a stable and suitable foundation for the tank. Covering the bottom with backfill material helps achieve this stability. The backfill material provides support, reduces the potential for settling or shifting, and helps protect the tank. A properly installed backfill layer also facilitates proper drainage and can assist in preventing any future issues related to moisture or movement.

While aspects like managing water levels, ensuring proper drainage, and monitoring characteristics of the tank site are all important in the overall installation process, they serve different purposes at various stages. Backfilling with the appropriate material is specifically crucial to guarantee that the tank has an adequate base to rest on before the backfilling around the tank is completed.