What is the effect of deep burial on fiberglass tanks in traffic conditions?

The correct answer highlights the advantage of fiberglass tanks when subjected to deep burial in traffic conditions. Fiberglass tanks are known for their ability to withstand greater external loads compared to other materials such as steel. When buried deeply, these tanks are subjected to substantial pressure from the surrounding earth as well as from above due to vehicular traffic. As a result, their structural integrity is enhanced, allowing them to handle these forces more effectively.

Fiberglass is inherently strong and flexible, reducing the risk of cracking or deformation under stress. This characteristic makes them particularly suitable for deep burial applications, where they can continue to perform reliably without the same level of concern for load-related damage that might affect other materials. Thus, the ability of fiberglass tanks to withstand greater loads while buried is a significant factor in their design and usage in underground storage applications.