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Porous Pavement Overlay :: A product from LID - PROPRIETARY AND NON-PROPRIETARY COMPONENTS ::
General Information
Find information on the BMP type, applications and pollutants treated
Cost
Per unit, CFS, and/or lb of pollutant removed
Design Considerations
Installation and maintenance requirements, design methodology, setbacks, capacities, etc.
Site and Environmental Considerations
Storm types, drainage area, soil types, infiltration rate, residuals, secondary impacts, etc.
Performance Evaluation
Summary table of test status, our rating, links to more detailed information, list of test reports
MASTEP Evaluation Summary
This product was evaluated in at least one third-party study. See MASTEP Evaluation Summary.
In Brief:
A layer of porous asphalt about 50 mm thick was overlaid on an existing asphalt road. This overlay is referred to as a permeable friction course (PFC) and typically has a void space between 18 and 22%. Rainfall drains through the porous layer and then run along the boundary between the porous and traditional asphalt layers before exiting at the edge of the pavement. The overlay was applied according to TxDOT (Texas Department of Transportation) specifications.

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