Where do storm sewers extend to in relation to a building in plumbing?

Storm sewers are designed to carry excess runoff away from a building, protecting the structure from flooding and managing rainfall effectively. Extending storm sewers to a point 2 feet outside the building's perimeter is a common practice. This distance ensures that the runoff is diverted away from the foundation, reducing the risk of water accumulation near the structure, which could lead to potential water damage or erosion.

It's essential for storm sewers to be positioned correctly; placing them too close to the building, such as right up to the basement or house perimeter, may not provide adequate drainage. On the other hand, extending storm sewers to connect directly to public sewer systems is typically reserved for sanitary sewers and not common practice for storm drainage, as these systems have separate responsibilities for managing different types of wastewater. Therefore, the choice of locating storm sewers 2 feet outside the building aligns well with plumbing standards aimed at effective water management and structural protection.