What is the minimum depth at which underground gas piping must be installed below grade?

The minimum depth for installing underground gas piping below grade is 12 inches. This requirement is in place to protect the gas piping from physical damage and to ensure safety considerations are met. Installing the piping at this depth helps prevent accidental strikes during surface activities, such as digging, landscaping, or construction. Additionally, following this depth adherence helps meet code regulations and standards aimed at maintaining safe gas distribution systems, reducing the risk of leaks, and ensuring proper installation practices.

This depth is typically mandated by local and national codes, which specify different requirements based on the type of pipe being used and the specific installation conditions.