Excellence in Engineering Since 1946 · Strand Associates, Inc.® ( ) Complex Sewer Separation in a...
Transcript of Excellence in Engineering Since 1946 · Strand Associates, Inc.® ( ) Complex Sewer Separation in a...
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Excellence in Engineering Since 1946
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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
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Outline
Image courtesy of Human Nature
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Outline
• Project Background
• Challenges
• Space Constraints
• Existing Sewer
• Developing Details
• Conclusion and Questions
Image courtesy of Human Nature
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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”
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• CSO 005
• Largest Annual Overflow Volume
• Consent Decree, WWIP
• Original LMCPR
• LMC Study
• Deep Tunnel
• Alternate Solution Possible
Background – Development Effects
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• Infrastructure Investment
• Multiple objectives
• Revised Original LMCPR
• Stormwater separation
• Lick Run Strategic Separation
• 12 Projects
Background – Communities of the Future
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Valley Conveyance System Overview
Rendering courtesy of Human Nature
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Challenge – Limited Horizontal Space
Images courtesy of Human Nature
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Challenge – Limited Horizontal Space
• Hybrid Conveyance
Image courtesy of Human Nature
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Challenge – Limited Horizontal Space
Rendering courtesy of Human Nature
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Challenge – Limited Horizontal Space
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Challenge – Limited Vertical Space
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Challenge – Limited Vertical Space
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Challenge – Limited Vertical Space
476.00
477.00
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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
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Challenge – Limited Vertical Space
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Recurring Challenge – Existing Combined Sewer
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Recurring Challenge – Existing Combined Sewer
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Recurring Challenge – Existing Combined Sewer
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Recurring Challenge – Existing Combined Sewer
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Recurring Challenge – Existing Combined Sewer
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Recurring Challenge – Existing Combined Sewer
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Recurring Challenge – Existing Combined Sewer
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Developing Details
• Water Quality
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Image courtesy of Human Nature
Developing Details
• Water Quality
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Image courtesy of Human Nature
Developing Details
• Water Quality
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Image courtesy of Human Nature
Developing Details
• Water Quality
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Developing Details
• Brick Sewer Connections
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Developing Details
• Coordination with Separation Projects
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Developing Details
• Coordination with
Utilities
• GCWW Water Mains
• Duke GasQueen City Avenue
30” Water
Main
36” Water
Main
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Developing Details
• Coordination with
Utilities
• Duke Electric*
• Time Warner Cable*
• Cincinnati Bell*
• City ETS (fiber)*
• *conduit by MSD
contractor
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Other Challenges
• Transportation Crossings
• Major 1-way pair with cross streets
• Railroad
• Soils
• Structural Considerations (fill, slopes)
• Impacted Soils
• Volume
• Maintenance Access
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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
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Strand Associates, Inc.® ( )
QUESTIONS?
Mike Ellerbrock, P.E., LEED-AP513.861.5600
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Excellence in Engineering Since 1946