Using Municipal Roadways to Control Stormwater in Urban Environments with Permeable Interlocking Concrete Pavement

Length: 1 hour AIA Provider Number: J374      AIA Course Code: OC116 AIA Credit: Pending LA CES Course Code: OC116      LA CES Credit: Pending DP PDH: 1 PDH for Engineers*  In many urban watersheds regulators are adopting green infrastructure solutions for stormwater management. Retrofitting impervious pavement with materials designed to infiltrate stormwater is one obvious solution. The use of permeable interlocking concrete pavement (PICP) in parking lots and driveways has grown significantly in the last decade. Dozens of publications have demonstrated the runoff and pollutant control benefits these systems provide. However, parking lots and driveways cover relatively small areas within an urban watershed. Some municipalities now recognize that municipal roadways and alleyways can be designed to handle vehicular traffic while also functioning as a stormwater control measure using PICP. This presentation will describe how PICP systems are designed and constructed. Examples will illustrate the keys to properly constructing and maintaining these effective stormwater management systems. An update on the Southeast Atlanta Green Infrastructure Project will be provided highlighting how Atlanta converted six miles of impervious roadway to PICP to reduce flooding and combined sewer overflows. The presentation will conclude with lessons learned related to utilities, roadway slopes, and maintenance.

Length: 1 hour
AIA Provider Number: J374      AIA Course Code: OC116 AIA Credit: Pending
LA CES Course Code: OC116      LA CES Credit: Pending
DP PDH: 1 PDH for Engineers

Overview: 

In many urban watersheds regulators are adopting green infrastructure solutions for stormwater management. Retrofitting impervious pavement with materials designed to infiltrate stormwater is one obvious solution. The use of permeable interlocking concrete pavement (PICP) in parking lots and driveways has grown significantly in the last decade. Dozens of publications have demonstrated the runoff and pollutant control benefits these systems provide. However, parking lots and driveways cover relatively small areas within an urban watershed. Some municipalities now recognize that municipal roadways and alleyways can be designed to handle vehicular traffic while also functioning as a stormwater control measure using PICP. This presentation will describe how PICP systems are designed and constructed. Examples will illustrate the keys to properly constructing and maintaining these effective stormwater management systems. An update on the Southeast Atlanta Green Infrastructure Project will be provided highlighting how Atlanta converted six miles of impervious roadway to PICP to reduce flooding and combined sewer overflows. The presentation will conclude with lessons learned related to utilities, roadway slopes, and maintenance.

Learning Objectives: 

  •  Participants will learn how PICP can be used as a stormwater control measure.
  •  Participants will understand proper construction and maintenance methods for PICP.
  •  Participants will learn how the City of Atlanta implemented permeable pavement in municipal roadways to control runoff and mitigate flooding.
  •  Participants will gain insight to design lessons learned related to municipal PICP retrofit projects.
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