Outside oil tank supports shall not be made of which material?

The correct answer is that outside oil tank supports shall not be made of wood. Wood is susceptible to decay, insect infestation, and weather-related deterioration, which can compromise the integrity and stability of the support structure over time. Given that fuel tanks must be securely supported to prevent accidents and leaks, materials that offer longevity and durability are crucial.

Concrete, steel, and brick are materials recognized for their strength and resilience in outdoor environments. They do not have the same vulnerabilities as wood, making them suitable for supporting oil tanks and ensuring they remain stable and secure over their lifespan. This focus on durability and safety is vital in adhering to building codes and regulations in the fuel industry.