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Evaluation of a Porous Concrete BMP: The Hydrologic Perspective

Evaluation of a Porous Concrete BMP: The Hydrologic Perspective. CEE Day Villanova University April 25, 2003 Tyler C. Ladd. Outline. Problem Solution Research Objectives Conclusions. Problem. Urbanization Increased impervious cover Increased flood flows Decreased baseflows

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Evaluation of a Porous Concrete BMP: The Hydrologic Perspective

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  1. Evaluation of a Porous Concrete BMP: The Hydrologic Perspective CEE Day Villanova University April 25, 2003 Tyler C. Ladd

  2. Outline • Problem • Solution • Research Objectives • Conclusions

  3. Problem • Urbanization • Increased impervious cover • Increased flood flows • Decreased baseflows • Increased downstream erosion and sedimentation • Aquatic habitat degradation • Impaired water resources • Government mandates

  4. Solution • Best Management Practices (BMPs) • Porous Concrete • Infiltration Beds • Research to support implementation • 97 - 100% Effective

  5. Research Objectives • Effectiveness of rainfall infiltration • Compare pre- and post-construction • Effect of antecedent dry days • Computer model • Long-term effectiveness

  6. Pre-Construction

  7. Infiltration Beds

  8. Post-Construction

  9. Post-Construction Porous Concrete (foreground) during a rain storm Porous Concrete in Action

  10. Re-construction Summer 2003

  11. Water Content Reflectometers

  12. Water Content Reflectometers

  13. Rain Gage, Pressure Transducer, and V-Notch Weir Rain Gage Pressure Transducer V-Notch Weir

  14. V-Notch Weir 0.05 inches of precipitation

  15. Preliminary Model Results • March 20, 2003 – 1.81 inches • 97% Effective

  16. Preliminary Model Results • March 26, 2003 – 0.32 inches • 100% Effective

  17. Conclusions • Exceeds hydrologic design expectations • Relate storm size to BMP effectiveness • More storms needed for better calibration

  18. Funding and Acknowledgements • Pennsylvania Department of Environmental Protection • Villanova University • Dr. Robert Traver • Dr. Andrea Welker • Clay Emerson • Michael Kwiatkowski • Matthew Prokop • Matthew Rea

  19. Questions?

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