In rigid foundation drain pipes, where are the holes typically aligned?

In rigid foundation drain pipes, the holes are typically aligned on the bottom half of the pipe. This design allows for effective drainage of water that may accumulate in the soil around the foundation. By placing the holes on the bottom half, any water that seeps down through the soil can enter the pipe more easily and be carried away from the foundation, thereby reducing the risk of water infiltration into the basement or crawl space.

Additionally, positioning the holes on the bottom half encourages the natural flow of water towards the drain due to gravity. Keeping the holes lower also prevents sediment and debris from entering the drain too easily, which can help maintain the drain's efficiency over time. This strategy effectively mitigates hydrostatic pressure against the foundation walls, a crucial aspect of maintaining structural integrity in buildings.