What is the typical minimum burial depth for lateral and main sewers?

The typical minimum burial depth for lateral and main sewers is generally 6 feet. This depth helps to ensure that the sewer lines are protected from potential damage due to ground movements, surface loads, or freezing temperatures. By burying the sewer lines at this depth, it also allows for adequate cover to minimize the risk of infiltration of water into the sewer system and to maintain proper function during heavy rainfall or snowmelt.

A depth of 6 feet is often recommended to comply with local building codes and standards, which can vary based on climate, soil conditions, and other factors. This standard offers sufficient insulation from frost in colder climates, contributing to the longevity and efficiency of the sewer system. Overall, this depth is a practical guideline to ensure the effective operation and maintenance of sewer infrastructure.