Post on 05-Aug-2018
A Tale of Two LeveesA Tale of Two Levees
Levee PipeLevee PipeLevee Flood GateLevee Flood GateCity of Rome, Georgia
Levee PipeLevee PipeRehabilitationRehabilitation
City of Paducah, Kentuckyy , gPresented by: Josh Myers EIT, CFM
y , yPresented by: Jason Petersen, PE
Georgia Association of Georgia Association of Floodplain Managers
5th Annual ConferenceMarch 23 - 25, 2010
Levee Flood GateLevee Flood GateRome, GeorgiaRome, Georgia
Background Information
• Three Rivers – Etowah, Oostanaula, and Coosa
Coosa• City Founded in 1834
Hi t f Ri R l t d ROME
• History of River-Related Industry
Histor of Freq ent •History of Frequent Flooding
Levee Flood GateLevee Flood GateRome, GeorgiaRome, Georgia
Top 10 Recorded Crests•1886 – 40.3 feet•1892 – 37.2 feet•1947 – 34.5 feet•1916 – 34.3 feet•1990 – 34.2 feet•1946 – 34.1 feet•1948 – 33.9 feet•1946 – 33.8 feet
•1932 – 33.8 feet•1936 – 33.7 feet
Levee Flood GateLevee Flood GateRome, GeorgiaRome, Georgia
Flood Protection•1891 Levee Commission Formed•1891 – Levee Commission Formed•1898 to 1899 – Broad Street Raised1937 USACE D i D t L S t•1937 – USACE Designs Downtown Levee System
•1939 – Rome’s Downtown Levees ConstructedL 1940’ All L k D C d•Late 1940’s – Allatoona Lake Dam Constructed
•1970’s – Carters Lake Dam Constructed•Late 1980’s – South Rome Levee Constructed
Levee Flood GateLevee Flood GateRome, GeorgiaRome, Georgia
Downtown Levee
Avenue A Flood Gate & Pump Station
H i P kHeritage Park
Second Avenue Flood Gate & Pump Station
New Second Avenue Flood Gate Location
Levee Flood GateLevee Flood Gate
Original Scope•RFP advertised February 12 2008
Rome, GeorgiaRome, Georgia
•RFP advertised February 12, 2008•Decommission 2nd Avenue Flood GateR h bilit t A A Fl d G t•Rehabilitate Avenue A Flood Gate
•Construct New 2nd Avenue Flood Gate$1 95 Milli F d d b 2006 SPLOST•$1.95 Million Funded by 2006 SPLOST
•$100k Used for South Rome Levee Certification•Additional Funds Went to Rehabilitate Pump
Electrical Systems
Levee Flood GateLevee Flood GateRome, GeorgiaRome, Georgia
2nd Avenue Flood Gate•Cast in Place Concrete Structure•Cast-in-Place Concrete Structure•Stop LogsC W ti D i i i•Concerns Warranting Decommissioning
•Narrow2 d A Wid i & H i l Pl•2nd Avenue Widening & Hospital Plans
•Labor Intensive•Aesthetics
Levee Flood GateLevee Flood GateRome, GeorgiaRome, Georgia
Avenue A Flood Gate•Almost Identical to 2nd Avenue Flood Gate•Almost Identical to 2nd Avenue Flood Gate•Differences
Sli htl Sh t•Slightly Shorter•Different UseDiff F d i•Different Foundation
•Concerns Warranting Rehabilitation•Labor Intensive
Levee Flood GateLevee Flood GateRome, GeorgiaRome, Georgia
New 2nd Avenue Flood Gate•Design Parameters•Design Parameters
•Provide Two-Way Vehicular AccessP id P d t i A•Provide Pedestrian Access
•Allow for Multi-Use Trail BridgeI I Pl d GDOT 2 d A •Integrate Into Planned GDOT 2nd Avenue
ImprovementsSi l d Q i k Fl d G t•Simple and Quick Flood Gate
•Meet all USACE Design Criteria
Levee Flood GateLevee Flood GateRome, GeorgiaRome, Georgia
Project Phases•Conceptual Engineering•Conceptual Engineering•Review Authority CoordinationC t V lid ti•Concept Validation
•Construction DocumentsP i i•Permitting
•Bid Administration•Construction Administration•Project Certification
Levee Flood GateLevee Flood GateRome, GeorgiaRome, Georgia
Modified Scope•Avenue A Flood Gate•Avenue A Flood Gate
•Damaged in PastS Li•Sewer Line
•Rebar SeveredD i i M d •Decision Made to
Abandon GateCit C ld A b •City Could Access by
Alternate Route
Levee Flood GateLevee Flood GateRome, GeorgiaRome, Georgia
Construction•Start Date October 21 2009•Start Date - October 21, 2009•Schedule - 120 Calendar DaysC l ti D t F b 17 2010•Completion Date – February 17, 2010
•However…
Levee Flood GateLevee Flood GateRome, GeorgiaRome, Georgia
Rain, Rain, Rain…More Rain600
590
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575
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585
565
570
560January February March April May June July August September October November December
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
2000 2001 2002 2003 2004 2005 2006 2007 2008
Levee Flood GateLevee Flood GateRome, GeorgiaRome, Georgia
Rain, Rain, Rain…More Rain50
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0January February March April May June July August September October November December
Major Flood Stage Moderate Flood Stage Flood Stage Action Stage
Levee Flood GateLevee Flood GateRome, GeorgiaRome, Georgia
Rain, Rain, Rain…More Rain30
20
25
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0September October November November December January January February March March
Construction Period
Paducah, KY Floodwall Pipe Rehabilitation ProjectSummary, Observations and Recommendations
Presented by:
Jason E Petersen P E Project ManagerJason E. Petersen, P.E., Project ManagerFlorence & Hutcheson
GEORGIA ASSOCIATION OF FLOODPLAIN MANAGERS ANNUAL TECHNICAL CONFERENCE
March 24, 2010Ma c , 0 0
OutlineOutline
• Backgroundg• Five Phases of a Pipe Rehabilitation Project• Summary/Observations• USACE “Proof Test” • Mix of project-specific info, general observations and
“Lessons Learned”“Lessons Learned”
Paducah Floodwall DataPaducah Floodwall Data
• 12.4 miles• 9.3 mi earthen levee 9.3 mi earthen levee • 3.1 mi concrete wall• 12 pump stationsp p• 37 gate penetrations• 1940’s construction• Constructed by USACE• City’s responsibility
Pipe DataPipe Data
• 65 gravity pipes• 8” to 113” diameter• Storm, sanitary and combined• Manhole and culverts• Urban & rural
Pipe ProblemPipe Problem
Must Rehab Deteriorated CMPs
• Questions….– Only CMPs?y– Cost?– Acceptable rehab methods?
City of Paducah retained F&H to design rehabilitation
55--Phase ApproachPhase Approach
• Phased Approach to Rehabilitation:pp1. Assessment2. Evaluation3 Design3. Design4. Procurement5. Construction
Phase 1 Phase 1 -- AssessmentAssessment
Goal - Gather Data to Establish Existing Conditiong
• “What and Where”• 3-components3 components
1. Records review2. Field verification3 Vid i ti (CCTV)3. Video inspection (CCTV)
Records ReviewRecords Review
• As-built drawingsg• Floodwall centerline stationing
– 3 sections– 128 PIs– 25 Equation Stations
• ROW and access OW a d access • O&M personnel
Field VerificationField Verification
• Base mapping• Diameter and material• Inlet/outlet treatment
Photos• Photos
• Site conditions• Label all structures• Label all structures• Surface improvements
CCTV InspectionCCTV Inspection
• Digital video – All PipesNASSCO PACP di• NASSCO PACP coding– Metal corrosion– Deformation (flexible pipe)( p p )
• Submergence• Cleaning and prep work
– rip rap– sticks and leaves
• Large diameter and man-entryLarge diameter and man entryThis is not a typical sanitary sewer CCTV inspection
Phase 2 Phase 2 -- EvaluationEvaluation
Goal – Evaluate Data and Need for Rehabilitation
• “How good/bad is it?”• PACP – Valuable screening tool
All b h bb d– All pipes 4 or 5 to be rehabbed– Summarize critical defects
• Inlet and outlet condition– Siltation– Scour
H d ll/St t diti• Headwall/Structure condition• Resolve discrepancies
Phase 3 Phase 3 -- DesignDesign
Goal – Prepare Rehabilitation Strategy to Address all Needsp gy
• Trenchless rehabilitation must consider:– Inlet/Outlet access – Range of pipe sizes– Alignment/deflections/deformations
Hydraulic capacity– Hydraulic capacity– Voids outside the pipe– Structural strength– Long-term maintenance and function
Design (cont.)Design (cont.)
• Evaluated state-the-art rehab methods and materials:Cured In Place Pipe (CIPP)– Cured-In-Place Pipe (CIPP)
– Grout-In-Place Liner– Spiral Wound PVC (manual and machine)– Profile Wall PVC and HDPE– Glass-Reinforced Pipe (GRP)– Spray-Applied Coatings (cementitious and epoxy)Spray Applied Coatings (cementitious and epoxy)– Fold and Form HDPE– Panel lining
Close fit pipe– Close-fit pipe
• Everything was “on the table”
Design (cont.)Design (cont.)
• F&H solicited presentations from 8 vendors • Only “slipline” rehab concept was approved• Only slipline rehab concept was approved• 4 methods were selected:
– Slipline – Solid wall HDPEp– Slipline – Glass Reinforced Pipe (GRP)– Spiral Wound PVC (machine)– Spiral Wound PVC (manual) – Spiral Wound PVC (manual)
• Structural and nonstructural cementitious grout • F&H prepared design and specifications p p g p• Reviewed and approved by USACE
Design (cont.)Design (cont.)
• Each material/method has unique parametersq p– UV radiation resistance– Shrinkage/expansion with temperature
Longitudinal beam stiffness– Longitudinal beam stiffness– Diameter factory or field controlled – Composite pipe system or individual– Access requirements
Phase 4 Phase 4 -- ProcurementProcurement
Goal – Lower Bids Through Better Information
• Considerations– Pre-bid meeting w/site visit
l l h d– Contractor select material/method – Provide all assessment data– Wet weather levee damage– Flood event contingency– Define access limitations– “Grout-to-China” scenarioGrout to China scenarioSurprises = delays = $$$
Phase 5 Phase 5 --ConstructionConstruction
Goal – On-Time Within Budget
• Considerations– Submit workplan and sequencing
Management of water– Management of water– Wet weather– QA/QC for grout– Post-installation CCTV– On-site inspection
Summary and RecommendationsSummary and Recommendations
• Assessment, Assessment, Assessment• Quality CCTV is crucial• Levee pipe rehab is not sanitary sewer rehab
CMP’ hi hl fl ibl d h ll• CMP’s are highly flexible and pose many challenges• Experienced contractors are crucial to project success
C t l f t i k• Control of water is key• Diameter does not directly relate to difficulty
Clearly define QA/QC parameters for grout• Clearly define QA/QC parameters for grout
ProjectProject--Specific DataSpecific Data
• Contractor: Larry Smith Contractors, Inc.• Scope: 37 pipes (24” to 113”)Scope: 37 pipes (24 to 113 )• Cost: $2 million• Sliplining datap g
– 32 GRP (Hobas)– 4 fused HDPE (butt-fused)– 1 segmental HDPE (Snap Tite)– 1 segmental HDPE (Snap Tite)– 300 psi non-structural annulus grout
• Inlet/Outlet treatment completed• Inlet hydraulic improvement pending weather
USACEUSACE Proof Test*Proof Test*
Goal – Verify Sliplining Project Materials and Methodsy p g j
• Developed by USACE Levee Safety Section personnel w/input from City of Paducah and F&Hp y
• 2-24” and 1-48” CMPs from sliplining project• Non-Destructive Testing • Destructive Testing
*Presented with permission from the Louisville USACE Levee Safety Section
USACEUSACE Proof Test*Proof Test*
• Non-Destructive Testing (before and after sliplining)g ( p g)– Gamma ray logging– Thermographic analysis
Hydrostatic load test w/piezometers– Hydrostatic load test w/piezometers
*Presented with permission from the Louisville USACE Levee Safety Section
USACEUSACE Proof Test*Proof Test*
• Destructive testing– Excavate and remove sliplined and grouted pipe– Cut pipe into segments and inspect– Install new pipe (original diameter)p p ( g )
*Presented with permission from the Louisville USACE Levee Safety Section
USACEUSACE Proof Test* Proof Test* –– General ObservationsGeneral Observations
• Grout filled 100% of annulus• Grout migrated outside of host pipe
– 1 c.y. ± void in soilb d– CMP band at pipe joint
– Not detectable by PACP inspection
• Sliplining stopped infiltration in hydrostatic testSl pl g stopped lt at o yd ostat c test• Nondestructive testing not yet completed • Final report and guidance document is pending
*Presented with permission from the Louisville USACE Levee Safety Section