Porous Pavements

Porous Pavement

Today's Goals1. What is Pervious Paving?

2. Why use Pervious Paving?

3. Understand Design & Construction Issues

4. Understand Maintenance Issues

Porous Pavements

1. What is a Pervious Pavement?

Porous Pavements

Pervious Pavement with Infiltration Bed

Porous Pavements

�Asphalt

�Concrete

�Pavers

�Turf Reinforced Products

Porous Pavements

Porous Pavements

Porous Pavements

Porous Pavements

Porous Pavements

2. Why Use Pervious Pavement?

�Peak Runoff Rate Reductions

�Runoff Volume Reductions

�Water Quality Benefits

�LEED Credits

�Aesthetic Reasons

Porous Pavements

Porous Pavements

3. Design & Construction Issues

�Subgrade Infiltration Rate

�Subgrade Limiting Zones

�Stormwater Runoff Rates

�Overflow

�Sequence of Construction/Protection of Subgrade and Pervious Paving

�Contractor Qualifications and Submittals

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4. Maintenance Issues

�Clogging

�Loose Material/Aggregate

�Replacement

�Ice Control

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Conclusion

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Aesthetics Cost Construction Maintenance

Asphalt 4 1 1 1

Concrete 3 2 4 2

Pavers 1 4 3 4

Turf Reinforced Products

2 3 2 3

Footnotes

1. Can Depend on Quantity and Design Loads

2. Ranked from Highest (1) to Lowest (4)

References� PA Stormwater BMP Manual

www.elibrary.dep.state.pa.us

� NJ Stormwater BMP Manualnjstormwater.org

� Pervious Concrete Pavementperviouspavement.org

� National Ready Mixed Concrete Associationnrmca.org

� National Asphalt Pavement Associationwww.asphaltpavement.0rg

� Interlocking Concrete Pavement Institutewww.icpi.org

Porous Pavements

Contact Information

Mark S. Mayhew, PE

mayhew@taylorwiseman.com

Mobile: 267-374-8055

Office Locations:

Chalfont, PA

Reading area, PA

Wilkes-Barre area, PA

Porous Pavements