The area we live in limits the amount of land development is limited since the most of the ground around here is bedrock. The hill by the courtyard limits what products and materials we can get into the courtyard. Since the courtyard is on a downward slope we need the drains down there so that the school doesn't flood or rot. The school around the are is mostly windows and doors so there is not much for development near the walls. If the drains are sunk to far into the ground it wouldn't even be possible to relocate the drains.