− | Mid- and high-rise buildings have higher user occupancy densities than other sites and require significant parking area. To conserve site area, these parking lots are typically located underground. Mid- and high-rise buildings usually have flat roofs that drain internally to onsite storm sewer networks. They typically have common areas, but their size and function vary. [[Bioretention: parking lots]] | + | Mid- and high-rise buildings have higher user occupancy densities than other sites and require significant parking area. To conserve site area, these parking lots are typically located underground. Mid- and high-rise buildings usually have flat roofs that drain internally to onsite storm sewer networks. They typically have common areas, but their size and function vary. [[Bioretention: Parking lots]] |