What is the minimum cover in inches required for underground piping?

The minimum cover required for underground piping is important for ensuring the safety, structural integrity, and protection of the piping system. A cover of 18 inches is typically specified because it provides adequate protection against external loads and potential surface disturbances, while also allowing for efficient installation and maintenance. This depth helps to safeguard the piping from damage that could be caused by activities occurring on the ground surface, such as construction or heavy traffic.

The standards often reference a variety of specifications, including those from organizations such as the American Society of Mechanical Engineers (ASME) or the American National Standards Institute (ANSI), which may dictate these minimum requirements to mitigate risks associated with underground installations. A depth of 18 inches strikes a balance between sufficient protection and practical considerations in installation practices.

Choosing a cover that is too shallow might expose the piping to unnecessary risk, while selecting a cover that is overly deep may complicate installation and increase labor costs. Therefore, ensuring that the cover meets the 18-inch requirement is crucial for the safe implementation of underground piping systems, particularly in contexts where compressed natural gas is utilized.