Determine the minimum depth at which the pipe needs to be buried. … Excavate the area for the pipe to the depth determined in Step 1.Add gravel for drainage (if necessary) to the trench. … Add approximately one half the soil that was removed back into the trench.

How deep do pipes need to be buried?

Underground piping shall be buried not less than 18 inches below the surface of the ground unless otherwise protected. All underground piping shall be protected from corrosion by coating in compliance with Section 533(b) or equivalent.

What type of pipe can be buried?

High-Density Polyethylene (HDPE, often just “PE”) has become one of the most popular choices for underground service lines, thanks to its corrosion-resistance, durability, and competitive price. Some codes require that buried plastic lines under 2″ in diameter be PE (rather than PVC).