What is the main purpose of using geotextiles in tank installation?

The primary purpose of using geotextiles in tank installation is to prevent backfill movement. Geotextiles serve as a separation layer between the soil and the backfill material, effectively controlling soil erosion and preventing the mixing of different soil types. This is crucial in maintaining the structural integrity of the backfill and ensuring that it remains properly compacted around the underground storage tank (UST).

When backfill materials shift or move, it can lead to uneven settling of the tank, which may compromise the tank's stability and lead to potential failures or leaks. By using geotextiles, the movement of the backfill is minimized, ensuring the tank remains securely positioned throughout its lifespan. Additionally, the filtration properties of geotextiles allow water to drain while preventing the migration of small soil particles, further contributing to the stability of the installation.