Which type of pipe is generally used for foundation drainage around a building?

Perforated pipe is specifically designed for applications like foundation drainage around buildings. This type of pipe has holes or slots along its length, allowing water to enter and be redirected away from the foundation. This drainage technique is crucial in preventing water accumulation around the foundation, which can lead to structural damage, mold growth, and other issues.

The use of perforated pipe facilitates the collection and transport of excess groundwater, ensuring that the area around the foundation remains dry. The design helps disperse the water evenly and allows it to flow into a drainage system or be discharged away from the building, effectively managing water pressure against the foundation walls.

Other types of pipe, like PVC, cast iron, and galvanized steel, do not possess the perforations needed for effective drainage. While these materials might be used in plumbing and drainage systems, they do not serve the same specific purpose for which perforated pipe is intended.