pavement type .•chapter 10 – pavement design •pavement design software minor revision. aasho

Download Pavement Type .•Chapter 10 – Pavement Design •Pavement Design Software minor revision. AASHO

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  • AlternatePavementTypeBidding

    April11,2011MaconAreaOffice

  • Overview

    MakeYouAwareofCurrentProcessDesignPTS PavementTypeSelection

    ShareFuturePlansMEPDG(DARWinME)

    DescribeAlternatePavementTypeBiddingShareWaytoGetIndustryInput

  • DesignProcess

    AASHTOInterimGuideforDesignofPavementStructures

    DesignPolicyManualChapter10 PavementDesign

    PavementDesignSoftwareminorrevision

  • AASHORoadTest

  • AsphaltDesign

    TotalThicknessbasedonTraffic,Soils,LocationGDOTStandardPavementSection

    SN=SNHMA +SNBase

    Base

    HMA

  • ConcreteDesign

    PCCThicknessbasedonTraffic,Soils,LocationGDOTStandardPavementSection

    ThicknessfromNomograph

    Base

    PCC

  • ConcreteDesign

  • PavementTypeSelection

    PavementEvaluation

    PavementTypeSelectionProcess LCCA:LifeCycleCostAnalysis DecisionMatrix

  • PavementEvaluationExistingRoadways

    GatherHistoricalInformation ExistingTypeofPavement

    ReviewConceptfortheProject GatherExistingConditionofPavement

  • LifeCycleCostAnalysis

    PossibleTypicalSectionAlternates

    Rehabilitation,Reconstruction,orNewConstruction

    TypicalSectionsDevelopedUsingDesignProcess

    TypicalSectionsComparedUsingLCCA

  • LifeCycleCostAnalysis

    EconomicAnalysisoverTime InitialCost

    MaintenanceTimingandCost

    SalvageValue

    UserCost

    AnalysisPeriod

    NPV NetPresentValue

  • LCCA 40yearanalysisperiod

    Time

    Maintenance

    Salvage

    InitialConstruction

    Time

    Maintenance

    Salvage

    Asphalt

    Concrete

  • LCCA NPV1 NPV2

    CompareNetPresentValue(NPV)ofalternates

    ResultsusedinPavementTypeSelectionProcess

  • PavementTypeSelection

    AdditionalFactors EaseofRepairing/Maintaining

    Constructability

    ConstructionTime

    ExpectedLife

    Other

    DecisionMatrix WeightingFactors

  • DecisionFactor 1

    Decision Factor 2

    Decision Factor 3

    DecisionFactor 4

    TOTAL SCOREWeight Weight 1 Weight 2 Weight 3 Weight 4

    Alt 1

    Alt 2

    Alt 3

    Alt 4

    DecisionMatrix

  • TOTAL SCOREWeight

    Alt 1

    Alt 2

    Alt 3

    Alt 4

    60 50 80 50

    50 75 70 70

    40 75 60 80

    30 100 50 90

    30 12.5 8 7.5 58.00

    25 18.75 7 10.5 61.25

    20 18.75 6 12 56.75

    15 25 5 13.5 58.50

    Initial Cost

    MaintCost

    Annual Cost

    Other Factors

    50% 25% 10% 15%

    DecisionMatrix

  • DecisionAnalysis

    WeightingFactors Relative(weighted)importanceoffactorsconsideredinselectionprocess

    Sumofallweightingfactorsmustequal100

    TypicalSectionrecommendedbasedonfinalscore

  • Future

    GroupMeetsmonthly

    Nov 2011Today

    Publish Process

    Let AB Project

    AlternatePavementBidding

    PavementDesign

    ImplementMEPDG

  • MEPDGClimate

    TrafficMaterials

    Structure

    DistressResponseTime

    Damage

    Damage Accumulation

  • ResearchUnderway

    MEPDG(DARWinME) RelatedResearch

    CTEDetermination

    TrafficLoadSpectra

    CalibrationandValidationforGeorgiaPending

  • AlternatePavementTypeBidding

    PavementTypeSelectionGuide NationalGuideinDevelopment

    IncludesChapteronAlternatePavementTypeBidding

    TypeSelection

  • AlternatePavementTypeBidding

    AlabamaArizonaColoradoIdahoIndianaKansasTennesseeLouisiana

    KentuckyMichiganMontanaOhioPennsylvaniaNorth CarolinaMissouri

  • GDOTAlternateBidding

    WillconsiderprojectswhenDecisionMatrixscoresareclose

    WillconsiderprojectsthatcanbeletwithoutanytypeofA+Bfactors

    Biddingtobesimilartocurrentalternatebaseandalternateshouldertypebidding,i.e.onlyonealternatecanbebid

  • TypeofPotentialProjects

    Reconstruction NewConstruction

    Not PavementPreservation Wideningthatdoesnotrequirereconstruction

  • NextSteps1. ConveneSmallGroupforFollowup

    Associationrepresentatives(12) InputtoDesignPolicyManualChapter

    10.3 PavementTypeSelection ReviewofSpecifications

    2. PublishasGDOTPolicies/Procedures

    3. PlaceAlternativeBidinLetproject

  • TimelineIndustryMeeting

    GroupMeetsmonthly

    Nov 2011Today

    Publish Chapter

    10.3

    Let Project

    1st project:WestClevelandBypass PhaseI

    Goal:Sept 2011

  • Commentsorquestionscanalsobesentto:

    altpavbid@dot.ga.gov

    mailto:altpavebid@dot.ga.gov

    Alternate Pavement Type BiddingSlide Number 2Slide Number 3Slide Number 4Slide Number 5Slide Number 6Slide Number 7Slide Number 8Slide Number 9Slide Number 10Slide Number 11Slide Number 12LCCASlide Number 14Decision MatrixDecision MatrixDecision AnalysisSlide Number 18Slide Number 19Slide Number 20Alternate Pavement-Type BiddingSlide Number 22GDOT Alternate BiddingType of Potential ProjectsSlide Number 25Slide Number 26Comments or questions can also be sent to:altpavbid@dot.ga.gov

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