“Design/Build” for Trenchless Rehabilitation Nicholas J ... · § Comprehensive Wastewater...
Transcript of “Design/Build” for Trenchless Rehabilitation Nicholas J ... · § Comprehensive Wastewater...
NEWEA– 2017AnnualConference&Exhibit
January24,2017
“Design/Build”forTrenchlessRehabilitationFindandFix:lessonsforsuccess
NicholasJ.Rystrom,P.E.JonathanE.Kunay,P.E.
NEWEA– 2017AnnualConference&Exhibit
Outline
§ CityofRevereStats§ ProjectBackground§ Find&FixApproach§ IdentificationofPotentialScenarios§ DevelopmentofSpecifications§ Conclusions
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CityofRevere,Massachusetts
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CityofRevere,MA
§ Population:55,000
§ LandArea:10mi2
§ 99MilesofSanitarySewers§ ClayPipe§ 100YearsOld
§ 12PumpingStations
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ConsentDecree(CD)CivilActionNo.1:10-cv-11460
§ Enteredintoin2010withMassDEP &USEPA
§ ViolationsofCleanWaterAct
§ ComplianceRequirements§ Eliminatesanitaryseweroverflows(SSOs)
§ CapacityAssessment§ SewerSystemEvaluationSurvey(SSES)§ ComprehensiveWastewaterManagementPlan(CWMP)§ ComprehensiveStormwater ManagementPlan(CSMP)§ IllicitDischargeDetection&EliminationPlan(IDDE)
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CapacityAssessment
§ FlowMeteringProgram
§ DelineateFlowMeterAreas
§ PrioritizeAreastoInvestigate
§ PerformSSES
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SewerSystemEvaluationSurvey(SSES)
§ AcceleratedTimeline
§ FlowIsolation
§ 4,000gpd/idm
§ CCTVInspections
§ ManholeInspections
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SewerSystemEvaluationSurvey(SSES)
§ WidespreadDefectsFound
§ SewerPipes
§ Manholes
§ DuetoMaterial&Age
§ 100YearOldClaySewers
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ComprehensiveWastewaterMasterPlan
§ BasedonMetering&SSESResults
§ LargePortionofSystemtobeRehabilitated
§ PrivateInflowRemoval
§ DrainageImprovements
§ MeetRequirementsofConsentDecree
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ComprehensiveRehabilitationProgram
§ EffectivelyAddressWidespreadDefects
§ Consistsof:
§ Cured-In-PlacePipe(CIPP)Lining
§ ServiceLateralConnectionLining
§ ManholeRehabilitation
§ PrivateInflowRemoval
§ 25,000– 30,000LFAreas
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ComprehensiveRehabilitationProgram
§ ProventoRemoveHighPercentagesofInfiltration/Inflow
§ 40%- 70%
§ SuccessfullyImplementedinVariousMunicipalitiesThroughouttheCountry
§ RecommendedandInitiatedintheCityofRevere,MA.
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TraditionalComprehensiveRehabilitationDesignApproach
§ PerformSewerSystemInvestigations
§ CCTVInspection
§ ManholeInspection
§ DevelopDesignDrawings&Specifications
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TraditionalComprehensiveRehabilitationDesignApproach
§ CCTVInspectionCosts
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PipeSize(inches)
CCTVInspection&PreparatoryCleaning
CCTVInspection&HeavyCleaning
8”-10” $1.25- $1.65/ft $2.00– $3.00/ft
12”-15” $1.50- $1.75/ft $3.00- $3.50/ft
24”– 36” $2.50- $3.00/ft $9.00- $10.00/ft
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TraditionalComprehensiveRehabilitationDesignApproach
§ ManholeInspectionCosts
§ VaryBasedonType
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InspectionType Cost
SurfaceInspection $55- $75/each
VideoInspection $100- $125/each
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TraditionalComprehensiveRehabilitationDesignApproach
§ DevelopDesignDrawings&Specifications
§ ReviewCCTVInspectionVideos
§ IdentifyLocations&ExtentsofSpotRepairs
§ DeterminePipeSize,Material,Depth,NumberofServiceConnections(open/capped),DropConnections
§ DefineSurfaceConditions
§ ReviewManholeInspections
§ DetermineRehabilitationRecommendations(Cementitious/EpoxyLining,Frame&CoverReplacement)
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TraditionalComprehensiveRehabilitationDesignApproach
§ DesignDrawings&Specifications
§ ExtentsofCIPPLining&SpotRepairs
§ ManholeRehabilitationActions
§ DetailHowSpotRepairsandTrenchlessRehabilitationArePerformed
§ ApprovedMaterials&InstallationMethods
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TraditionalComprehensiveRehabilitationDesignApproach
§ DesignDrawings&Specifications§ ContainPermitObligations
§ Wetlands
§ StateHighwayAccess
§ AdjacentBuriedInfrastructure
§ PermitRequirements
§ SpecialMaterials/Procedures(ControlDensityFill)
§ PavementThickness
§ TrafficManagement
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Find&FixMethod
§ “Design/Build”forTrenchlessRehabilitation
§ CanSaveMoneyandReduceProjectDuration
§ EliminatetheNeedtoPerformInspectionsPriortoDesign
§ SuccessDirectlyRelatedtoCompletenessofDesignSpecifications
§ CarryItemstoCoverallTypesofScenariosThatMayBeEncounteredDuringConstruction
§ ConstructionOversite(ResidentEngineering)isEquallyImportant
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DeterminationofPotentialScenarios
§ SpotReplacementofSewers§ FederalorStateOwnedRoadways
§ SpecialPavingRequirements
§ GenericPermits
§ GroundSurfaceFeatures
§ PrivateProperty
§ Easements
§ CurbingTypes
§ SubsurfaceConditions§ Cobbles,RailTies,Contaminated/UnsuitableSoils,Etc.
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DeterminationofPotentialScenarios
§ PreviouslyLinedPipe
§ MayRequireLateralLining
§ ServicesNotProperlyReinstated
§ CappedServicesReinstated
§ ProtrudingTapsNotGroundDown
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DeterminationofPotentialScenarios
§ MultipleProtrudingTaps
§ PreventsAccessfromBothSides
§ TypicalRotaryCutterCannotBeUsed
§ LateralReinstatementDeviceIsNeeded
§ EquipmentNotUsuallyOwnedbyCCTVContractor
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DeterminationofPotentialScenarios
§ LargeChangesinQuantities
§ SewersMightBeLinedorPVCPipe
§ LessLiningThanOriginallyThought
§ GISDatabaseCouldHaveInaccuratePipeSizes
§ BidItemsforSpecificSizesCouldbeLargerorSmaller
§ ReviewRecordDrawings
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DeterminationofPotentialScenarios
§ UnknownServiceLateralConnections
§ Status:ActiveorCappedisUnknown
§ DyeTestingMayBeRequiredtoConfirm
§ IncorrectReinstatementCouldResultinBackupsorNeedforShortLiner
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DeterminationofPotentialScenarios
§ SurchargedSewers
§ InitialCCTVInspectionCannotbePerformed
§ BypassPumpingMayBeRequiredtoPerformInspection/Rehabilitation
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DeterminationofPotentialScenarios
§ ProjectDelays/ContractDuration
§ ManyUnknownsThatCouldCauseDelays
§ ExtraSpotRepairs
§ ChangesinLinerQuantitiesAffectCIPPOrdering
§ ProjectsCouldExtendIntoWinterMonths§ CertainRehabilitationProductsDoNotWorkinColdWeather
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DeterminationofPotentialScenarios
§ UnknownInfrastructure
§ ConnectivityIssues
§ MissingorExtraSewerPipes
§ MissingorExtraManholes
§ ManholesCouldBeBuried
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DeterminationofPotentialScenarios
§ AdditionalTrenchlessOptions
§ ConventionalDigandReplaceSpotRepairNotPossible
§ UtilityConflicts
§ DepthofRepair
§ OtherRehabilitationTechniquesMayBeNeeded
§ PipeBursting
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DevelopmentofSpecifications
§ DevelopmentofRobustandDetailedTechnicalSpecificationsisCriticaltoSuccess
§ UniqueBidItemsRequired
§ EnhancedLanguageinMeasurement&PaymentNeeded
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DevelopmentofSpecifications
§ SpotReplacementofSewers
§ IncludeBidItemstoAccountforVariousPossibilities
§ PipeSize
§ Depth
§ LengthofRepair
§ SurfaceandSubsurfaceConditions
§ EstimateQuantitiesBasedonReviewofSystem
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SpotReplacementBidItemsItemNumber Description EstimatedQuantity Unit UnitPrice Total
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RemoveandReplace(8-inthru12-in)existingVCsewer(0'-8'deep)up
to8linearfeet11 Each $7,743.25 $85,175.75
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RemoveandReplace(8-inthru12-in)existingVCsewer(9'-12'deep)up
to8linearfeet8 Each $7,924.38 $63,395.04
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RemoveandReplace(8-inthru12-in)existingVCsewer(13'-16'deep)
upto8linearfeet4 Each $10,867.50 $43,470.00
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RemoveandReplace(8-inthru12-in)existingVCsewer(17-20'deep)
upto8linearfeet1 Each $12,075.00 $12,075.00
15a
RemoveandReplace(8-inthru12-in)existingVCsewer(0'-8'deep)beyond8linearfeetspecifiedin
Item14a20 LinearFoot $370.75 $7,415.00
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RemoveandReplace(8-inthru12-in)VCSewer(9'-12'deep)beyond8linearfeetspecifiedinItem14b
16 LinearFoot $370.75 $5,932.00
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RemoveandReplace(8-inthru12-in)existingVCsewer(13'-16'deep)beyond8linearfeetspecifiedin
Item14c8 LinearFoot $302.40 $2,419.20
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RemoveandReplace(8-inthru12-in)VCSewer(17'-20'deep)beyond8
linearfeetspecifiedinItem14d4 LinearFoot $302.40 $1,209.60
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DevelopmentofSpecifications
§ SpotReplacementofSewers
§ IncludeDetailedLanguageinMeasurementandPayment
§ RestoringPrivateProperty
§ RemovingTrolleyTracks
§ RestoringSidewalksandCurbing
§ DisposingofUnsuitable/ContaminatedSoils
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RestoringPrivateProperty
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CobbledStreets
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Trolley/StreetcarTracks
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SidewalksandCurbing
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ContaminatedSoils
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DevelopmentofSpecifications
§ SpotReplacementofSewers
§ DigginginStateOwnedRoadwaysorEasements
§ PermitRequirements
§ ReducedWorkingHours
§ DifficultAccess
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SpotReplacementBidItems
ItemNumber Description EstimatedQuantity Unit UnitPrice Total
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RemoveandReplace(8-inthru12-in)existingVC
sewer(0'-8'deep),inStateHighway,upto8linear
feet
2 Each $8,223.25 $16,446.50
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RemoveandReplace(8-inthru12-in)existingVC
sewer(0'-8'deep),inStateHighway,beyond8linearfeetspecifiedinItem21
10 LinearFoot $400.75 $4,007.50
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RemoveandReplace(8-inthru12-in)existingVCsewer(9'-12'deep),in
cross-countryareas,upto8linearfeet
1 Each $8,500.00 $8,500.00
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RemoveandReplace(8-inthru12-in)VCSewer(9'-12'deep),incross-countryareas,beyond8linearfeet
specifiedinItem23
5 LinearFoot $375.50 $1,877.50
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DevelopmentofSpecifications
§ PreviouslyCIPPLinedSewers
§ IfServiceLateralLiningisPartofScope
§ IncludeBidItemsFor:
§ AdditionalServiceLateralReinstatement/Brushing
§ InstallationofShortLiners
§ GrindingDownProtrudingTaps
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DevelopmentofSpecifications
§ MultipleProtrudingTaps
§ CannotBeCutWithRotaryCutter
§ ChangedCondition
§ IncludeBidItemForGrindingDownProtrudingTapwithLateralReinstatementEquipment
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ItemNumber Description EstimatedQuantity Unit UnitPrice Total
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Grind-downMultipleProtrudingTapsUsingLateralReinstatement
Equipment12 each $442.50 $5,310.00
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DevelopmentofSpecifications
§ DyeTesting
§ StatusofAllServiceConnectionsWillNotBeKnown
§ RiskinReinstatingorNotReinstatingServices
§ IncludeBidItemForDyeTestingofServices
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DevelopmentofSpecifications
§ Dewatering/BypassPumping
§ SewersCouldBeSurcharged
§ MustbeCleanedandInspected
§ IncludeBidItemForDewatering/BypassPumping/HeavyCleaning
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ItemNumber Description EstimatedQuantity Unit UnitPrice Total
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Dewater/BypassPumpandPerformTelevisionInspectionofSewerPipe- 8"-24"
5,271 LinearFoot $3.00 $15,813.00
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DevelopmentofSpecifications
§ AdditionalTrenchlessAlternatives
§ SpotReplacementofSewersNotAlwaysPossible
§ UtilityConflicts
§ DepthofRepair
§ IncludeBidItemForPipeBursting
§ DetailedLanguagewithAssumptionsonPipeSize
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Conclusions
§ Find&FixMethodis“Design/Build”forTrenchlessRehabilitation§ CanSaveMoneyandTime§ AllowMunicipalitiestoRehabilitateLargePortionsoftheirSewerSystem§ DetailedSpecificationsareCrucialtoLimitChangeOrders
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Contactus!
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JonathanE.Kunay,[email protected]
Findmoreinsightsthroughourwaterpartnershipatcdmsmith.com/waterand@CDMSmith
NicholasJ.Rystrom,[email protected]