bridge foundation design local agency workshop february, 2009 jan six, p.e. sr. geotechnical...
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BRIDGE FOUNDATION DESIGNBRIDGE FOUNDATION DESIGN
Local Agency Workshop
February, 2009
Jan Six, P.E.
Sr. Geotechnical Engineer
ODOT Bridge Engineering Section
ODOT FOUNDATION DESIGNODOT FOUNDATION DESIGN
Standards Foundation Design ProcessFoundation ReportsPlans & SpecificationsConstruction Assistance
Standards Foundation Design ProcessFoundation ReportsPlans & SpecificationsConstruction Assistance
ODOT Geotechnical Design Manual (GDM) (available from ODOT Geo-Environmental web site)
AASHTO LRFD Bridge Design SpecificationsODOT Bridge Design & Drafting ManualODOT Standard SpecificationsFHWA Design Manuals (Geotechnical Circulars)
ODOT Geotechnical Design Manual (GDM) (available from ODOT Geo-Environmental web site)
AASHTO LRFD Bridge Design SpecificationsODOT Bridge Design & Drafting ManualODOT Standard SpecificationsFHWA Design Manuals (Geotechnical Circulars)
StandardsStandards
To determine the bridge foundation system that will result in the most cost effective bridge design, taking into account all the appropriate foundation design and construction considerations.
To determine the bridge foundation system that will result in the most cost effective bridge design, taking into account all the appropriate foundation design and construction considerations.
Foundation Design ProcessFoundation Design Process
Scoping & Field ReconnaissanceField ExplorationsLaboratory TestingFoundation Design Foundation ReportsSpecificationsConstruction Support
Scoping & Field ReconnaissanceField ExplorationsLaboratory TestingFoundation Design Foundation ReportsSpecificationsConstruction Support
Foundation Design ProcessFoundation Design Process
Identify Foundation Design Elements of ProjectNew Bridge FoundationsBridge WideningRetaining WallsCulverts
Conduct Office Data ResearchOld Foundation Data on Existing StructurePile Record BooksMaintenance Records
Identify Foundation Design Elements of ProjectNew Bridge FoundationsBridge WideningRetaining WallsCulverts
Conduct Office Data ResearchOld Foundation Data on Existing StructurePile Record BooksMaintenance Records
Scoping and Field ReconnaissanceScoping and Field Reconnaissance
Foundation Design ProcessFoundation Design Process
Observe Site Conditions affecting Exploration, Design and/or Construction
Surface Conditions/ Obstructions (logs, riprap)Wetland Areas, R/W or other access restrictionsBridge Condition (settlement, corrosion) Scour or stream bank erosionUtilities (buried & overhead)Slope instabilities (slides, settlement, water
problems)Locate Exploration Holes (test pits)
Observe Site Conditions affecting Exploration, Design and/or Construction
Surface Conditions/ Obstructions (logs, riprap)Wetland Areas, R/W or other access restrictionsBridge Condition (settlement, corrosion) Scour or stream bank erosionUtilities (buried & overhead)Slope instabilities (slides, settlement, water
problems)Locate Exploration Holes (test pits)
Field ReconnaissanceField Reconnaissance
Foundation Design ProcessFoundation Design Process
Typically done by contract drillers under contract to ODOTObtain Preliminary Bent LocationsTypically Locate Drill Holes at all Bridge Bents (per AASHTO)Identify Permits of Entry and Environmental ClearancesUtility Locations & Notifications
Typically done by contract drillers under contract to ODOTObtain Preliminary Bent LocationsTypically Locate Drill Holes at all Bridge Bents (per AASHTO)Identify Permits of Entry and Environmental ClearancesUtility Locations & Notifications
Field ExplorationsField Explorations
Foundation Design ProcessFoundation Design Process
Standard Penetration Resistance Test (SPT ‘N’ value)Undisturbed Samples (Laboratory Testing)Rock Core Drilling (Rock hardness, RQD)Special In-Situ Tests (Cone Penetrometer, Pressuremeter)
Standard Penetration Resistance Test (SPT ‘N’ value)Undisturbed Samples (Laboratory Testing)Rock Core Drilling (Rock hardness, RQD)Special In-Situ Tests (Cone Penetrometer, Pressuremeter)
Field ExplorationsField Explorations
Foundation Design ProcessFoundation Design Process
Standard Penetration Resistance Test 140lb. hammer, 30” drop
#blows/6” incrementSPT ‘N’ value = #blows/last
12”
Standard Penetration Resistance Test 140lb. hammer, 30” drop
#blows/6” incrementSPT ‘N’ value = #blows/last
12”
Field ExplorationsField Explorations
Foundation Design ProcessFoundation Design Process
Undisturbed Sample (Shelby Tube) Undisturbed Sample (Shelby Tube) Field ExplorationsField Explorations
Foundation Design ProcessFoundation Design Process
Exploration Log Exploration Log
Field ExplorationsField Explorations
Amount depends on the soils and project designPurpose of obtaining engineering properties of
soils and rock materials for use in designTypical Lab Tests:
Shear Strength of SoilsUnconfined Compressive Strength
(rock)Consolidation Tests (settlement)Unit Weight & Index Tests
Amount depends on the soils and project designPurpose of obtaining engineering properties of
soils and rock materials for use in designTypical Lab Tests:
Shear Strength of SoilsUnconfined Compressive Strength
(rock)Consolidation Tests (settlement)Unit Weight & Index Tests
Laboratory TestingLaboratory Testing
Foundation Design ProcessFoundation Design Process
Construct Subsurface ProfileStratigraphy & Geologic ModelGroundwater ConditionsEngineering Design Parameters
Foundation TypeSeismic Analysis
Construct Subsurface ProfileStratigraphy & Geologic ModelGroundwater ConditionsEngineering Design Parameters
Foundation TypeSeismic Analysis
Foundation Design ProcessFoundation Design Process
Subsurface Geologic ProfileSubsurface Geologic Profile
Foundation Design ProcessFoundation Design Process
Seismic Analysis (Earthquake Design)Two Level Design
Seismic design is evaluated in terms of the overall bridge performance using the 500 yr. & 1000 yr. mean return period earthquakes. Bridge performance must meet “Serviceability” criteria for 500 year event and Life Safety criteria (no collapse) for 1000 yr event.
Seismic Analysis (Earthquake Design)Two Level Design
Seismic design is evaluated in terms of the overall bridge performance using the 500 yr. & 1000 yr. mean return period earthquakes. Bridge performance must meet “Serviceability” criteria for 500 year event and Life Safety criteria (no collapse) for 1000 yr event.
Foundation Design ProcessFoundation Design Process
Seismic Analysis (cont.)
Ground Acceleration (PGA)2002 USGS MapsSite Specific Analysis (optional)
Liquefaction AnalysisLateral Spread, Slope InstabilityApproach Fill SettlementBridge Damage PotentialMitigation Measures
Seismic Analysis (cont.)
Ground Acceleration (PGA)2002 USGS MapsSite Specific Analysis (optional)
Liquefaction AnalysisLateral Spread, Slope InstabilityApproach Fill SettlementBridge Damage PotentialMitigation Measures
Foundation Design ProcessFoundation Design Process
Foundation ReportsFoundation Reports
Foundation type depends on combinations of:Foundation Materials & ConditionsStructure Type & Loads Performance CriteriaSite Conditions/Construction Constraints
Extreme Event EffectsSeismic Loads (Liquefaction Potential) Scour Depths
Costs & Construction Time
Foundation type depends on combinations of:Foundation Materials & ConditionsStructure Type & Loads Performance CriteriaSite Conditions/Construction Constraints
Extreme Event EffectsSeismic Loads (Liquefaction Potential) Scour Depths
Costs & Construction Time
Foundation Design ProcessFoundation Design Process
Other Project Considerations:In-Water Work PeriodsEnvironmental Restrictions
Noise or Vibration ConstraintsConstruction Access/Traffic Control
Other Project Considerations:In-Water Work PeriodsEnvironmental Restrictions
Noise or Vibration ConstraintsConstruction Access/Traffic Control
Foundation Design ProcessFoundation Design Process
Shallow FoundationsSpread Footings (on engineered fill)MSE Abutment Wall w/ Spread Footing
Deep FoundationsDriven PilesDrilled ShaftsMicropiles
Shallow FoundationsSpread Footings (on engineered fill)MSE Abutment Wall w/ Spread Footing
Deep FoundationsDriven PilesDrilled ShaftsMicropiles
Foundation Design ProcessFoundation Design Process
Types of FoundationsTypes of Foundations
Spread Footing Design
SettlementBearing Resistance Sliding ResistanceOverturning (eccentricity)Overall Stability (slope stability)
Spread Footing Design
SettlementBearing Resistance Sliding ResistanceOverturning (eccentricity)Overall Stability (slope stability)
Foundation Design ProcessFoundation Design Process
Pile Design
Most CommonSteel Pipe Piles (open or closed end)H-Piles
Less CommonPrestressed ConcreteTimber
Pile Design
Most CommonSteel Pipe Piles (open or closed end)H-Piles
Less CommonPrestressed ConcreteTimber
Foundation Design ProcessFoundation Design Process
Pile Design
Bearing Resistance (compression and tension)Lateral ResistanceSettlement and Downdrag AnalysisCorrosion Potential/ProtectionTip Protection Pile Drivability (construction)Group Settlement, Group Effects
Pile Design
Bearing Resistance (compression and tension)Lateral ResistanceSettlement and Downdrag AnalysisCorrosion Potential/ProtectionTip Protection Pile Drivability (construction)Group Settlement, Group Effects
Foundation Design ProcessFoundation Design Process
Drilled Shafts
High bearing resistanceHigh lateral resistanceCost-effective in river environmentsCan be socketed into bedrockPotential construction issues
Hole stability (caving, groundwater)Difficulty with drilling obstructionsNeed very good subsurface dataNeed good experienced contractors
Drilled Shafts
High bearing resistanceHigh lateral resistanceCost-effective in river environmentsCan be socketed into bedrockPotential construction issues
Hole stability (caving, groundwater)Difficulty with drilling obstructionsNeed very good subsurface dataNeed good experienced contractors
Foundation Design ProcessFoundation Design Process
Foundation Design ProcessFoundation Design Process
Micropiles
Small diameter, drilled-in-place piles
Rarely usedRelatively expensiveApplicable for:
low overhead clearanceboulders in foundation soilsunderpinning projects
Micropiles
Small diameter, drilled-in-place piles
Rarely usedRelatively expensiveApplicable for:
low overhead clearanceboulders in foundation soilsunderpinning projects
Foundation Design ProcessFoundation Design Process
Project description (scope & purpose)Project description (scope & purpose)Office research & summary of pertinent records relating Office research & summary of pertinent records relating
to foundation design and construction. to foundation design and construction. Description of the geologic settingDescription of the geologic settingSummary of hydraulics information affecting foundation Summary of hydraulics information affecting foundation
recommendationsrecommendationsSubsurface explorations and conditionsSubsurface explorations and conditions
Boring logsBoring logsGroundwater conditionsGroundwater conditionsSpecial field testingSpecial field testing
Laboratory test resultsLaboratory test results
Project description (scope & purpose)Project description (scope & purpose)Office research & summary of pertinent records relating Office research & summary of pertinent records relating
to foundation design and construction. to foundation design and construction. Description of the geologic settingDescription of the geologic settingSummary of hydraulics information affecting foundation Summary of hydraulics information affecting foundation
recommendationsrecommendationsSubsurface explorations and conditionsSubsurface explorations and conditions
Boring logsBoring logsGroundwater conditionsGroundwater conditionsSpecial field testingSpecial field testing
Laboratory test resultsLaboratory test results
Foundation ReportsFoundation Reports
Seismic Analysis & RecommendationsSeismic Analysis & Recommendations500 yr. and 1000 yr. event analysis 500 yr. and 1000 yr. event analysis Peak Ground Acceleration (PGA), SPeak Ground Acceleration (PGA), Saa & S & S11 AASHTO soil site class and response spectraAASHTO soil site class and response spectraLiquefaction AssessmentLiquefaction Assessment
Extent of Liquefaction & Potential ImpactsExtent of Liquefaction & Potential ImpactsLateral Spread PotentialLateral Spread PotentialReduced Foundation CapacitiesReduced Foundation CapacitiesSettlement, Downdrag PotentialSettlement, Downdrag Potential
Liquefied Soil Parameters for Bridge AnalysisLiquefied Soil Parameters for Bridge AnalysisMitigation Recommendations Mitigation Recommendations
Site Specific Analysis & Response Spectra (optional)Site Specific Analysis & Response Spectra (optional)
Seismic Analysis & RecommendationsSeismic Analysis & Recommendations500 yr. and 1000 yr. event analysis 500 yr. and 1000 yr. event analysis Peak Ground Acceleration (PGA), SPeak Ground Acceleration (PGA), Saa & S & S11 AASHTO soil site class and response spectraAASHTO soil site class and response spectraLiquefaction AssessmentLiquefaction Assessment
Extent of Liquefaction & Potential ImpactsExtent of Liquefaction & Potential ImpactsLateral Spread PotentialLateral Spread PotentialReduced Foundation CapacitiesReduced Foundation CapacitiesSettlement, Downdrag PotentialSettlement, Downdrag Potential
Liquefied Soil Parameters for Bridge AnalysisLiquefied Soil Parameters for Bridge AnalysisMitigation Recommendations Mitigation Recommendations
Site Specific Analysis & Response Spectra (optional)Site Specific Analysis & Response Spectra (optional)
Foundation ReportsFoundation Reports
Foundation RecommendationsFoundation RecommendationsSpread Footings (on engineered fill)Spread Footings (on engineered fill)PilesPilesDrilled ShaftsDrilled ShaftsMicropilesMicropiles
Foundation RecommendationsFoundation RecommendationsSpread Footings (on engineered fill)Spread Footings (on engineered fill)PilesPilesDrilled ShaftsDrilled ShaftsMicropilesMicropiles
Foundation ReportsFoundation Reports
Spread FootingsSpread Footings
Recommended Footing Elevation(s) Recommended Footing Elevation(s) Nominal Bearing ResistanceNominal Bearing ResistanceFactored Bearing Resistance (Allowable Bearing Capacity)Factored Bearing Resistance (Allowable Bearing Capacity)Nominal bearing resistance for service limit state (settlement)Nominal bearing resistance for service limit state (settlement)Description and properties of the anticipated foundation materialDescription and properties of the anticipated foundation material
Spread FootingsSpread Footings
Recommended Footing Elevation(s) Recommended Footing Elevation(s) Nominal Bearing ResistanceNominal Bearing ResistanceFactored Bearing Resistance (Allowable Bearing Capacity)Factored Bearing Resistance (Allowable Bearing Capacity)Nominal bearing resistance for service limit state (settlement)Nominal bearing resistance for service limit state (settlement)Description and properties of the anticipated foundation materialDescription and properties of the anticipated foundation material
Foundation ReportsFoundation Reports
Pile FoundationsPile FoundationsType (Pipe Pile, H-pile, Concrete or Timber)Type (Pipe Pile, H-pile, Concrete or Timber)Size or Dimensions (O.D., wall thickness, etc.) Size or Dimensions (O.D., wall thickness, etc.) Material Specification (e.g., ASTM spec & grade of steel), Material Specification (e.g., ASTM spec & grade of steel), Tip Treatment (PP open or closed-end, reinforcement)Tip Treatment (PP open or closed-end, reinforcement)Nominal Bearing Resistances, Nominal Bearing Resistances,
estimated tip elevation for bearing estimated tip elevation for bearing estimated cutoff elevation, estimated cutoff elevation, “estimated” or “order” lengths “estimated” or “order” lengths
Minimum Required Tip Elevation (reason for req’d. tip elev.)Minimum Required Tip Elevation (reason for req’d. tip elev.)Resistance Factors (Resistance Factors (factor) and Factored Resistancesfactor) and Factored ResistancesNominal (Ultimate) Uplift CapacitiesNominal (Ultimate) Uplift CapacitiesSoil Parameters for Lateral Load AnalysisSoil Parameters for Lateral Load AnalysisPile Group SettlementPile Group Settlement
Pile FoundationsPile FoundationsType (Pipe Pile, H-pile, Concrete or Timber)Type (Pipe Pile, H-pile, Concrete or Timber)Size or Dimensions (O.D., wall thickness, etc.) Size or Dimensions (O.D., wall thickness, etc.) Material Specification (e.g., ASTM spec & grade of steel), Material Specification (e.g., ASTM spec & grade of steel), Tip Treatment (PP open or closed-end, reinforcement)Tip Treatment (PP open or closed-end, reinforcement)Nominal Bearing Resistances, Nominal Bearing Resistances,
estimated tip elevation for bearing estimated tip elevation for bearing estimated cutoff elevation, estimated cutoff elevation, “estimated” or “order” lengths “estimated” or “order” lengths
Minimum Required Tip Elevation (reason for req’d. tip elev.)Minimum Required Tip Elevation (reason for req’d. tip elev.)Resistance Factors (Resistance Factors (factor) and Factored Resistancesfactor) and Factored ResistancesNominal (Ultimate) Uplift CapacitiesNominal (Ultimate) Uplift CapacitiesSoil Parameters for Lateral Load AnalysisSoil Parameters for Lateral Load AnalysisPile Group SettlementPile Group Settlement
Foundation ReportsFoundation Reports
Pile Foundations (continued)Pile Foundations (continued)
Downdrag Effects (reduced capacities or mitigation) Downdrag Effects (reduced capacities or mitigation) Liquefaction Effects: reduced pile capacities (axial, uplift, lateral, etc)Liquefaction Effects: reduced pile capacities (axial, uplift, lateral, etc)Pile Drivability AnalysisPile Drivability AnalysisWave Equation Parameters (for special provisions/contractors)Wave Equation Parameters (for special provisions/contractors)
Pile Foundations (continued)Pile Foundations (continued)
Downdrag Effects (reduced capacities or mitigation) Downdrag Effects (reduced capacities or mitigation) Liquefaction Effects: reduced pile capacities (axial, uplift, lateral, etc)Liquefaction Effects: reduced pile capacities (axial, uplift, lateral, etc)Pile Drivability AnalysisPile Drivability AnalysisWave Equation Parameters (for special provisions/contractors)Wave Equation Parameters (for special provisions/contractors)
Foundation ReportsFoundation Reports
Pile Driving Pile Driving Stress ProblemsStress ProblemsPile Driving Pile Driving Stress ProblemsStress Problems
Foundation ReportsFoundation Reports
Drilled ShaftsDrilled ShaftsShaft Type (i.e., end-bearing, friction or both)Shaft Type (i.e., end-bearing, friction or both)Nominal Resistance for various diameters and lengthsNominal Resistance for various diameters and lengthsEstimated Shaft Settlement vs. Shaft Diameter and LoadEstimated Shaft Settlement vs. Shaft Diameter and LoadFactored Resistance and Resistance FactorsFactored Resistance and Resistance FactorsSoil Parameters for Lateral Load AnalysisSoil Parameters for Lateral Load AnalysisLiquefaction Effects: reduced shaft capacities (axial, uplift, Liquefaction Effects: reduced shaft capacities (axial, uplift,
lateral, etc) lateral, etc) LLoad Test recommendations (if appropriate)oad Test recommendations (if appropriate)
Drilled ShaftsDrilled ShaftsShaft Type (i.e., end-bearing, friction or both)Shaft Type (i.e., end-bearing, friction or both)Nominal Resistance for various diameters and lengthsNominal Resistance for various diameters and lengthsEstimated Shaft Settlement vs. Shaft Diameter and LoadEstimated Shaft Settlement vs. Shaft Diameter and LoadFactored Resistance and Resistance FactorsFactored Resistance and Resistance FactorsSoil Parameters for Lateral Load AnalysisSoil Parameters for Lateral Load AnalysisLiquefaction Effects: reduced shaft capacities (axial, uplift, Liquefaction Effects: reduced shaft capacities (axial, uplift,
lateral, etc) lateral, etc) LLoad Test recommendations (if appropriate)oad Test recommendations (if appropriate)
Foundation ReportsFoundation Reports
Construction & Specification RecommendationsConstruction & Specification Recommendations
Pile FoundationsPile FoundationsPile Driving CriteriaPile Driving CriteriaWave Equation Input Criteria (if applicable)Wave Equation Input Criteria (if applicable)Number of Pile SplicesNumber of Pile SplicesIs Set Period (freeze) acceptable?Is Set Period (freeze) acceptable?Is Preboring or Jetting acceptable?Is Preboring or Jetting acceptable?Effects of driving on adjacent structuresEffects of driving on adjacent structuresPotential Driving Obstructions (e.g., boulders, existing piles, Potential Driving Obstructions (e.g., boulders, existing piles,
utilities) been identified? utilities) been identified?
Construction & Specification RecommendationsConstruction & Specification Recommendations
Pile FoundationsPile FoundationsPile Driving CriteriaPile Driving CriteriaWave Equation Input Criteria (if applicable)Wave Equation Input Criteria (if applicable)Number of Pile SplicesNumber of Pile SplicesIs Set Period (freeze) acceptable?Is Set Period (freeze) acceptable?Is Preboring or Jetting acceptable?Is Preboring or Jetting acceptable?Effects of driving on adjacent structuresEffects of driving on adjacent structuresPotential Driving Obstructions (e.g., boulders, existing piles, Potential Driving Obstructions (e.g., boulders, existing piles,
utilities) been identified? utilities) been identified?
Foundation ReportsFoundation Reports
Construction & Specification RecommendationsConstruction & Specification Recommendations
Drilled ShaftsDrilled ShaftsEnd bearing or friction shaft designationEnd bearing or friction shaft designationTemporary or Permanent casing recommendationsTemporary or Permanent casing recommendationsGroundwater conditionsGroundwater conditionsBoulders and/or obstructions expected to be encountered Boulders and/or obstructions expected to be encountered Cross Hole Sonic Logging (CSL) Cross Hole Sonic Logging (CSL) Quality Control Quality Control
Construction & Specification RecommendationsConstruction & Specification Recommendations
Drilled ShaftsDrilled ShaftsEnd bearing or friction shaft designationEnd bearing or friction shaft designationTemporary or Permanent casing recommendationsTemporary or Permanent casing recommendationsGroundwater conditionsGroundwater conditionsBoulders and/or obstructions expected to be encountered Boulders and/or obstructions expected to be encountered Cross Hole Sonic Logging (CSL) Cross Hole Sonic Logging (CSL) Quality Control Quality Control
Foundation ReportsFoundation Reports
Foundation ReportsFoundation Reports
Structural Defect Produced by Interruption in Concreting and Low Slump Concrete
Construction & Specification RecommendationsConstruction & Specification Recommendations
Other Foundation RecommendationsOther Foundation Recommendations
Detour Bridge RecommendationsDetour Bridge RecommendationsFalsework SupportFalsework Support
Falsework foundation type recommendationsFalsework foundation type recommendationsFoundation ExcavationsFoundation Excavations
Groundwater conditions & possible mitigationGroundwater conditions & possible mitigationShoring and BracingShoring and BracingCofferdamsCofferdams
UUnique Special Provisionsnique Special ProvisionsSpecific Geotechnical/Geologic informationSpecific Geotechnical/Geologic information
Construction & Specification RecommendationsConstruction & Specification Recommendations
Other Foundation RecommendationsOther Foundation Recommendations
Detour Bridge RecommendationsDetour Bridge RecommendationsFalsework SupportFalsework Support
Falsework foundation type recommendationsFalsework foundation type recommendationsFoundation ExcavationsFoundation Excavations
Groundwater conditions & possible mitigationGroundwater conditions & possible mitigationShoring and BracingShoring and BracingCofferdamsCofferdams
UUnique Special Provisionsnique Special ProvisionsSpecific Geotechnical/Geologic informationSpecific Geotechnical/Geologic information
Foundation ReportsFoundation Reports
Foundation Data Sheet (part of bridge plans)Foundation Data Sheet (part of bridge plans)
Locations all explorations (borings, test pits, hand augers, etc.)Locations all explorations (borings, test pits, hand augers, etc.)Explorations plotted in elevation viewExplorations plotted in elevation viewSubsurface conditions depicted with soil and rock unit descriptions Subsurface conditions depicted with soil and rock unit descriptions SPT (“N” values), Undisturbed SamplesSPT (“N” values), Undisturbed SamplesHighest measured groundwater levels and the date measuredHighest measured groundwater levels and the date measuredPPercent rock core recoveryercent rock core recovery and and rock hardness rock hardness..
Foundation Data Sheet (part of bridge plans)Foundation Data Sheet (part of bridge plans)
Locations all explorations (borings, test pits, hand augers, etc.)Locations all explorations (borings, test pits, hand augers, etc.)Explorations plotted in elevation viewExplorations plotted in elevation viewSubsurface conditions depicted with soil and rock unit descriptions Subsurface conditions depicted with soil and rock unit descriptions SPT (“N” values), Undisturbed SamplesSPT (“N” values), Undisturbed SamplesHighest measured groundwater levels and the date measuredHighest measured groundwater levels and the date measuredPPercent rock core recoveryercent rock core recovery and and rock hardness rock hardness..
Foundation ReportsFoundation Reports
Foundation ReportsFoundation Reports
Distributed To:Structural Designer(s)Specification WriterProject Manager’s Office (inspector)Project Team LeaderRegion Geo-OfficeHQ Bridge Engineering OfficeFHWA (for large projects)
Distributed To:Structural Designer(s)Specification WriterProject Manager’s Office (inspector)Project Team LeaderRegion Geo-OfficeHQ Bridge Engineering OfficeFHWA (for large projects)
Plans & SpecificationsPlans & Specifications
Plans ReviewPlans ReviewPile type, size and gradePile type, size and gradeDrilled Shaft size, tip elevations, min. rock socket depthDrilled Shaft size, tip elevations, min. rock socket depthNominal ResistancesNominal ResistancesResistance FactorsResistance FactorsPile Driving Criteria Pile Driving Criteria Required Pile Tip ElevationRequired Pile Tip ElevationPile Tip treatmentPile Tip treatmentSplicing DetailSplicing DetailFootings:Footings: Nominal Resistance Nominal Resistance Maximum Footing Elevation Maximum Footing Elevation
Plans ReviewPlans ReviewPile type, size and gradePile type, size and gradeDrilled Shaft size, tip elevations, min. rock socket depthDrilled Shaft size, tip elevations, min. rock socket depthNominal ResistancesNominal ResistancesResistance FactorsResistance FactorsPile Driving Criteria Pile Driving Criteria Required Pile Tip ElevationRequired Pile Tip ElevationPile Tip treatmentPile Tip treatmentSplicing DetailSplicing DetailFootings:Footings: Nominal Resistance Nominal Resistance Maximum Footing Elevation Maximum Footing Elevation
SpecificationsSpecificationsPiling (Section 520)Piling (Section 520)
Estimated Pile Lengths (steel piles)Estimated Pile Lengths (steel piles)Number of Pile SplicesNumber of Pile SplicesTip Treatment (open or closed end, reinforcement)Tip Treatment (open or closed end, reinforcement)Driving CriteriaDriving CriteriaWave Equation Input (if applicable)Wave Equation Input (if applicable)Pile freeze, preboring or jetting allowedPile freeze, preboring or jetting allowed
SpecificationsSpecificationsPiling (Section 520)Piling (Section 520)
Estimated Pile Lengths (steel piles)Estimated Pile Lengths (steel piles)Number of Pile SplicesNumber of Pile SplicesTip Treatment (open or closed end, reinforcement)Tip Treatment (open or closed end, reinforcement)Driving CriteriaDriving CriteriaWave Equation Input (if applicable)Wave Equation Input (if applicable)Pile freeze, preboring or jetting allowedPile freeze, preboring or jetting allowed
Plans & SpecificationsPlans & Specifications
SpecificationsSpecificationsShafts (Section 512)Shafts (Section 512)
Designated Friction or End BearingDesignated Friction or End BearingPermanent Casing RequirementsPermanent Casing RequirementsCrosshole Sonic Log (CSL) testing required Crosshole Sonic Log (CSL) testing required
SpecificationsSpecificationsShafts (Section 512)Shafts (Section 512)
Designated Friction or End BearingDesignated Friction or End BearingPermanent Casing RequirementsPermanent Casing RequirementsCrosshole Sonic Log (CSL) testing required Crosshole Sonic Log (CSL) testing required
Plans & SpecificationsPlans & Specifications
Construction AssistanceConstruction Assistance
Pile Hammer & Equipment Review & ApprovalPile Hammer & Equipment Review & ApprovalPile Driving Criteria (inspectors graph)Pile Driving Criteria (inspectors graph)Pile Driving Problem SolvingPile Driving Problem SolvingPile Record BooksPile Record BooksDrilled Shaft Installation PlanDrilled Shaft Installation PlanDrilled Shaft Construction FormsDrilled Shaft Construction FormsReview of CSL test resultsReview of CSL test resultsMaterials SubstitutionsMaterials SubstitutionsFoundation Inspection AssistanceFoundation Inspection AssistanceClaims ResolutionClaims Resolution
Pile Hammer & Equipment Review & ApprovalPile Hammer & Equipment Review & ApprovalPile Driving Criteria (inspectors graph)Pile Driving Criteria (inspectors graph)Pile Driving Problem SolvingPile Driving Problem SolvingPile Record BooksPile Record BooksDrilled Shaft Installation PlanDrilled Shaft Installation PlanDrilled Shaft Construction FormsDrilled Shaft Construction FormsReview of CSL test resultsReview of CSL test resultsMaterials SubstitutionsMaterials SubstitutionsFoundation Inspection AssistanceFoundation Inspection AssistanceClaims ResolutionClaims Resolution
Thank You!Thank You!