All dispensers shall be installed on what type of foundation?

Dispensers must be installed on a concrete foundation to ensure stability and safety. Concrete provides a robust and durable base that can withstand the weight and operational demands of dispensers used for propane. This is essential for preventing movement or sinking that could occur with less stable materials. Additionally, concrete is resistant to various environmental factors, such as moisture and temperature changes, that could affect the integrity of the dispenser's installation.

A concrete foundation also facilitates proper drainage and can help prevent accumulation of water around the dispenser, which is critical for safety and compliance with regulations regarding flammable liquids. This type of surface ensures that the dispenser remains level and secure over time, which is important for safe dispensing practices. While other materials like wood or gravel may have applications in different contexts, they do not provide the structural support and long-term durability required for propane dispenser installations. Metal, while strong, is not typically used for foundations as it can corrode or become unstable if not properly maintained.