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→Geometry and Site Layout
===Geometry and Site Layout===
===Geometry and Site Layout===
[[File:Perforated concrete block alt.jpg|Parking lot with perforated pavers in stalls only, Singapore]]
Permeable paving can be used for entire parking lot areas or driveways and can be designed to receive runoff from adjacent impervious surfaces. For example, the parking spaces in a parking lot may be permeable pavers while the drive lanes themselves are impervious asphalt. In general, the impervious area should not exceed the area of the permeable paving which receives the runoff.
Permeable paving can be used for entire parking lot areas or driveways and can be designed to receive runoff from adjacent impervious surfaces. For example, the parking spaces in a parking lot may be permeable pavers while the drive lanes themselves are impervious asphalt. In general, the impervious area should not exceed the area of the permeable paving which receives the runoff.
A hybrid permeable paving/[[infiltration chambers|infiltration chamber]] design can feature connection of a roof [[downspout]] directly to the stone reservoir of the permeable paving system, which is sized to store runoff from both the pavement surface and the roof drainage area.
A hybrid permeable paving/[[infiltration chambers|infiltration chamber]] design can feature connection of a roof [[downspout]] directly to the stone reservoir of the permeable paving system, which is sized to store runoff from both the pavement surface and the roof drainage area.