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→Planning considerations
==Planning considerations==
==Planning considerations==
<h3>Geometry and Site Layout</h3>
Permeable paving can be used for entire parking lot areas or driveways or can be designed to receive runoff from adjacent impervious surfaces
For example, the parking spaces of a parking lot may be permeable pavers while the drive lanes are impervious asphalt.
In general, the impervious area should not exceed 1.2 times the area of the permeable pavement which receives the runoff.
A hybrid permeable pavement/soakaway design can feature connection of a roof downspout directly to the stone reservoir of the permeable pavement system, which is sized to store runoff from both the pavement surface and the roof drainage area.
<h3>Pretreatment</h3>
In most designs, the surface acts as pretreatment to the stone reservoir below. Periodic vacuum sweeping and preventative measures like not storing snow or other materials on the pavement are critical to prevent clogging.
<h3>Landscaping</h3>
<h3>Landscaping</h3>