excellence in engineering since 1946 · strand associates, inc.® ( ) complex sewer separation in a...
TRANSCRIPT
Excellence in Engineering Since 1946
Strand Associates, Inc.® ( )
Complex Sewer Separation in a Tight Urban Corridor: The Challenges of The Valley Conveyance System
OWEA Collection Systems Workshop
May 2, 2017
Mike Ellerbrock, P.E., LEED-AP
Outline
Image courtesy of Human Nature
Outline
• Project Background
• Challenges
• Space Constraints
• Existing Sewer
• Developing Details
• Conclusion and Questions
Image courtesy of Human Nature
Background - Lick Run History
• Watershed Developed, Redeveloped, Redeveloped…
• 31 miles streams 4 miles streams + 350 miles sewer
• Lick Run Combined Sewer Built in 1890s
• “Lickrun Sewer… A Big Affair That Will Help One End of the City.”
• “One of the Largest Drains in the United States”
• CSO 005
• Largest Annual Overflow Volume
• Consent Decree, WWIP
• Original LMCPR
• LMC Study
• Deep Tunnel
• Alternate Solution Possible
Background – Development Effects
• Infrastructure Investment
• Multiple objectives
• Revised Original LMCPR
• Stormwater separation
• Lick Run Strategic Separation
• 12 Projects
Background – Communities of the Future
Valley Conveyance System Overview
Rendering courtesy of Human Nature
Challenge – Limited Horizontal Space
Images courtesy of Human Nature
Challenge – Limited Horizontal Space
• Hybrid Conveyance
Image courtesy of Human Nature
Challenge – Limited Horizontal Space
Rendering courtesy of Human Nature
Challenge – Limited Horizontal Space
Challenge – Limited Vertical Space
Challenge – Limited Vertical Space
Challenge – Limited Vertical Space
476.00
477.00
478.00
54 60 66 72 78 84
Ele
va
tio
n
Nominal Pipe Diameter (IN)
Proposed CS Crown Elevation at VCS Crossing- Engel Alley
Crown Elevation
Challenge – Limited Vertical Space
Recurring Challenge – Existing Combined Sewer
Recurring Challenge – Existing Combined Sewer
Recurring Challenge – Existing Combined Sewer
Recurring Challenge – Existing Combined Sewer
Recurring Challenge – Existing Combined Sewer
Recurring Challenge – Existing Combined Sewer
Recurring Challenge – Existing Combined Sewer
Developing Details
• Water Quality
Image courtesy of Human Nature
Developing Details
• Water Quality
Image courtesy of Human Nature
Developing Details
• Water Quality
Image courtesy of Human Nature
Developing Details
• Water Quality
Developing Details
• Brick Sewer Connections
Developing Details
• Coordination with Separation Projects
Developing Details
• Coordination with
Utilities
• GCWW Water Mains
• Duke GasQueen City Avenue
30” Water
Main
36” Water
Main
Developing Details
• Coordination with
Utilities
• Duke Electric*
• Time Warner Cable*
• Cincinnati Bell*
• City ETS (fiber)*
• *conduit by MSD
contractor
Other Challenges
• Transportation Crossings
• Major 1-way pair with cross streets
• Railroad
• Soils
• Structural Considerations (fill, slopes)
• Impacted Soils
• Volume
• Maintenance Access
Concluding Remarks
• Challenges are abundant, but can be overcome with
detailed design
• Record Locations of infrastructure should be investigated
• CSO control infrastructure can positively impact
communities
Strand Associates, Inc.® ( )
QUESTIONS?
Mike Ellerbrock, P.E., LEED-AP513.861.5600
Excellence in Engineering Since 1946