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Southside Green - Team 2

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M. Damon Weiss
M. Damon Weiss

This document summarizes a study of improvements to an area along 21st Street in Southside, Pittsburgh. A team evaluated existing conditions and proposed a design to create a green gateway connecting Carson Street to the Southside Riverfront Park. The proposed design includes permeable pavement, vegetated swales, increased parking, and a new pedestrian bridge over the railroad to improve access to the park. The design was intended to manage stormwater runoff through monitoring systems and adjustable controls under the permeable surfaces.

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April 10 through 12, 2014 Study Area A – Team 2 The Green Gateway to the South Side Riverfront Park Study Area A Study Area B Study Area C http://www.southsidegreen.com Contributors Jason J. McBride, PE – Gannett Fleming Lisa Hollingsworth-Segedy, AICP – American Rivers Bill Moldovan, RLA – Mackin Engineering Joe Kudritz, PE – Michael Baker Matthew Weschler – University of Pittsburgh Todd Chambers, RLA – Chambers Design Associates John Buck, CPSS – Civil & Environmental Consultants, Inc.
April 10 through 12, 2014 Description of existing conditions ? Flat gradient ? Wide rights of way ? High yield locations ? Giant Eagle ? Active railroad ? Southside Riverfront park ? Mix of urban land uses ? Competition for on street parking
April 10 through 12, 2014 Carson Street facing north towards River
April 10 through 12, 2014 Wharton Street facing north towards Giant Eagle
April 10 through 12, 2014 End of 21st Street facing north
April 10 through 12, 2014 Study Area A The Green Gateway to Southside Riverfront Park http://www.southsidegreen.com ? Reinvigoration of the 21st Street corridor ? New public access over the railroad to South Side Riverfront Park ? Blending of modern and old world design style ? Seamless pedestrian and bikeway from Carson Street to the park ? 21st Street lined with pervious pavement and vegetated swales ? Increased parking from 33 spots to 40 spots
April 10 through 12, 2014 Study Area A – Design Details ? 9’ parking lanes, 5’ bikeways, & 11’ travel lanes each direction ? 7’ sidewalks & 4’ vegetated swales in most areas ? Pervious pavement parking lanes to catch road runoff ? Vegetated swales to catch sidewalk runoff ? Vegetated curb bump outs at each intersection ? All pervious elements will be underlain with 2’ of gravel backfill http://www.southsidegreen.com
April 10 through 12, 2014 http://www.southsidegreen.com Study Area A Green Gateway To South Side Riverfront Park
April 10 through 12, 2014 Study Area A South Section
April 10 through 12, 2014 Study Area A North Section
April 10 through 12, 2014 Study Area A Design Details Carson St Intersection
April 10 through 12, 2014 Study Area A
April 10 through 12, 2014 Coal Tipple Bridge and turn-around at the End of 21st Street
April 10 through 12, 2014 Coal Tipple Bridge and turn-around at the End of 21st Street Facing north with Giant Eagle parking lot to the west
April 10 through 12, 2014 Study Area A 21st Street Green Infrastructure Cross Section
April 10 through 12, 2014 Study Area A – Innovative Design Features ? Underdrain with water level controls, valves between zones – overflow removal ? Monitoring system: water level, water content, temp, electrical conductivity (salts) in storage aggregate and underlying soil ? Adjustable Thresholds (e.g., water depth, drainage rate) http://www.southsidegreen.com
April 10 through 12, 2014 Aggregate or Soil Moisture, Temperatu re, Electrical Conductivity Sensors Water Depth, Temper ature, Electrical Conductivity Sensor ? Water Depth ? Freezing Depth ? Available Pore-Space ? Percolation Rate ? Salt Status ? Actuate Active Controls??? Monitoring
April 10 through 12, 2014 Dataloggers & Sensors ? Battery-powered ? High Sampling Frequency (every 5 minutes) ? Memory onboard ? Cellular data telemetry
April 10 through 12, 2014 Example Output (Phipps Rain Garden) >10 inches/hour through Sand 0.1 inches/hour through Urban Subgrade Ground Level
April 10 through 12, 2014 Conclusions ? Achieves 1” storm capture goal ? Scalable approach ? Monitoring advances state of practice, adjustments ? “Tweakable” design (underdrain flow/elevation adjustments) ? Neighborhood asset – Pedestrian-friendly – Preserves on-street parking – Incorporates heritage elements in design – Provides new connection to South Side Riverfront Park
April 10 through 12, 2014 Questions?

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Southside Green - Team 2

  • 1. April 10 through 12, 2014 Study Area A – Team 2 The Green Gateway to the South Side Riverfront Park Study Area A Study Area B Study Area C http://www.southsidegreen.com Contributors Jason J. McBride, PE – Gannett Fleming Lisa Hollingsworth-Segedy, AICP – American Rivers Bill Moldovan, RLA – Mackin Engineering Joe Kudritz, PE – Michael Baker Matthew Weschler – University of Pittsburgh Todd Chambers, RLA – Chambers Design Associates John Buck, CPSS – Civil & Environmental Consultants, Inc.
  • 2. April 10 through 12, 2014 Description of existing conditions ? Flat gradient ? Wide rights of way ? High yield locations ? Giant Eagle ? Active railroad ? Southside Riverfront park ? Mix of urban land uses ? Competition for on street parking
  • 3. April 10 through 12, 2014 Carson Street facing north towards River
  • 4. April 10 through 12, 2014 Wharton Street facing north towards Giant Eagle
  • 5. April 10 through 12, 2014 End of 21st Street facing north
  • 6. April 10 through 12, 2014 Study Area A The Green Gateway to Southside Riverfront Park http://www.southsidegreen.com ? Reinvigoration of the 21st Street corridor ? New public access over the railroad to South Side Riverfront Park ? Blending of modern and old world design style ? Seamless pedestrian and bikeway from Carson Street to the park ? 21st Street lined with pervious pavement and vegetated swales ? Increased parking from 33 spots to 40 spots
  • 7. April 10 through 12, 2014 Study Area A – Design Details ? 9’ parking lanes, 5’ bikeways, & 11’ travel lanes each direction ? 7’ sidewalks & 4’ vegetated swales in most areas ? Pervious pavement parking lanes to catch road runoff ? Vegetated swales to catch sidewalk runoff ? Vegetated curb bump outs at each intersection ? All pervious elements will be underlain with 2’ of gravel backfill http://www.southsidegreen.com
  • 8. April 10 through 12, 2014 http://www.southsidegreen.com Study Area A Green Gateway To South Side Riverfront Park
  • 9. April 10 through 12, 2014 Study Area A South Section
  • 10. April 10 through 12, 2014 Study Area A North Section
  • 11. April 10 through 12, 2014 Study Area A Design Details Carson St Intersection
  • 12. April 10 through 12, 2014 Study Area A
  • 13. April 10 through 12, 2014 Coal Tipple Bridge and turn-around at the End of 21st Street
  • 14. April 10 through 12, 2014 Coal Tipple Bridge and turn-around at the End of 21st Street Facing north with Giant Eagle parking lot to the west
  • 15. April 10 through 12, 2014 Study Area A 21st Street Green Infrastructure Cross Section
  • 16. April 10 through 12, 2014 Study Area A – Innovative Design Features ? Underdrain with water level controls, valves between zones – overflow removal ? Monitoring system: water level, water content, temp, electrical conductivity (salts) in storage aggregate and underlying soil ? Adjustable Thresholds (e.g., water depth, drainage rate) http://www.southsidegreen.com
  • 17. April 10 through 12, 2014 Aggregate or Soil Moisture, Temperatu re, Electrical Conductivity Sensors Water Depth, Temper ature, Electrical Conductivity Sensor ? Water Depth ? Freezing Depth ? Available Pore-Space ? Percolation Rate ? Salt Status ? Actuate Active Controls??? Monitoring
  • 18. April 10 through 12, 2014 Dataloggers & Sensors ? Battery-powered ? High Sampling Frequency (every 5 minutes) ? Memory onboard ? Cellular data telemetry
  • 19. April 10 through 12, 2014 Example Output (Phipps Rain Garden) >10 inches/hour through Sand 0.1 inches/hour through Urban Subgrade Ground Level
  • 20. April 10 through 12, 2014 Conclusions ? Achieves 1” storm capture goal ? Scalable approach ? Monitoring advances state of practice, adjustments ? “Tweakable” design (underdrain flow/elevation adjustments) ? Neighborhood asset – Pedestrian-friendly – Preserves on-street parking – Incorporates heritage elements in design – Provides new connection to South Side Riverfront Park
  • 21. April 10 through 12, 2014 Questions?