Can Propane Lines Be Located Under Structures?

Installing Propane Lines Under Structures

Installing propane lines under structures can be done, but it’s essential to follow specific guidelines and regulations. The depth at which you bury the lines is critical; in the United States, for example, the International Fuel Gas Code requires propane gas lines to be buried at a minimum depth of 18 inches below grade.

Material Selection for Buried Propane Lines

When selecting materials for buried propane lines, you should consider the type of soil and the expected service life of the line. For example, a 1-inch Schedule 40 steel pipe can be used for buried propane lines, but you should also consider using a protective coating like a fusion-bonded epoxy to protect the pipe from corrosion. The American Society of Mechanical Engineers (ASME) recommends a minimum coating thickness of 0.001 inches for steel pipes.

Location Considerations for Propane Lines Under Structures

When locating propane lines under structures, it’s essential to avoid areas with high water tables or where the soil is prone to settling or erosion. You should also consider the location of any potential sources of ignition, such as electrical outlets or heating vents. In addition, you should leave adequate clearance between the propane lines and any other underground utilities, such as electric or phone lines. A general rule of thumb is to leave at least 12 inches of clearance between propane lines and other underground utilities.