What materials are commonly used for UST construction?

The materials commonly used for underground storage tank (UST) construction include steel, fiberglass, and composite materials, which are favored for their durability and resistance to corrosion.

Steel tanks are popular due to their strength and longevity, but they require protective coatings to prevent rust and corrosion when in contact with soil and moisture. Fiberglass tanks are non-corrosive and lighter, making them ideal for environments where chemical resistance is crucial. Composite materials, which often combine fiberglass with other substances, provide enhanced structural integrity and chemical resistance, making them suitable for various types of fuels and hazardous liquids.

The other options include materials that are less suitable for underground storage applications. Wood, plastic, and concrete lack the necessary properties for long-term containment of hazardous materials underground. Ceramic and glass, while potentially useful in some specific applications, do not typically provide the strength and flexibility required for USTs. Plastic alone can sometimes be used, but its durability compared to steel and fiberglass is not as robust for underground environments.