What function does a perforated drain pipe serve around a building?

A perforated drain pipe serves the function of collecting and diverting excess water. The design of a perforated pipe allows water to enter through the holes in the pipe, which is particularly useful in managing surface water and groundwater around a building. When heavy rainfall occurs or when the water table rises, these pipes help to channel the excess water away from the building’s foundation and surrounding areas, thus preventing flooding and water accumulation that could lead to erosion or structural damage.

By allowing water to drain away efficiently, the perforated pipe plays a crucial role in maintaining the stability and integrity of the building's foundation. This helps in prolonging the life of the structure and minimizes the risk of water damage, which can compromise both the aesthetics and safety of the building.