DEFINITION
porous pavements are a simplepaving descriptionsystem ofthat allows water to infiltrate through the pavement in order to more accurately reflect the elementpre-development hydrologic cycle

AKA
Porous Concrete, Porous Asphalt, Porous Pavers, Open-jointed Paving blocks, Open cell paving blocks (gravel, grass etc)

PERFORMANCE CRITERIA
howthe primary measurement for performance is itthe measured?infiltrative whatcapacity areof the criteriapavement. forthis itscan designbe oreffected over time by the build up of sediment and dirt within the pores of the pavement, but this can be remedied with regular planning?maintenance

ILLUSTRATION
a diagram or drawing that demonstrates the basic pattern or concept

CASE STUDIES
High Point, Seattle
Kitsap Homebuilders LID Demonstration Project, Bremerton

ADDITIONAL RESOURCES
Porous Pavement Powerpoint (as PDF) for Seattle's Stormwater Seminar Series
case study of an eastern North Carolina permeable pavement: http://www.box.net/shared/al1h2z7tod
Toronto Guidelines for Greening Parking Lots
City of Seattle Guide for Green Parking Lots
Portland Cement Pervious Concrete Pavement: Field Performance Investigation on Parking Lot and Roadway Pavements