structuredesigncriteria.docx
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structuredesigncriteria.docx
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structuredesigncriteria
NotestoUsers:
Thisdocumentisatemplate.ThetemplatewascreatedbygeneralizingtheBridgeDesignCriteriareportforasizeablereconstructionprojectandthereforecoversmanybridgetypesandbridgeworktypes.Modifythisdocumenttofiteachproject.Thismaymeandeletingoraddingsectionstothetemplate,changingdesignand/ormaterialspecifications,allowablevalues,materials,etc.PleaseforwardanysuggestionsforimprovingthetemplatetotheBridgeOffice.
nnninthedocumentindicatesmissingnumericaldata.
aaainthedocumentindicatesmissingalphadata.
InitialDate:
September2,2005
ModificationDates:
BRIDGEDESIGNCRITERIA
AAABRIDGE
RGnnnn
AAAPROJECT
PROJECTaaan-n(n)
PROJECTNAME
AGENCYNAME
COUNTY
STATE
DATE
Preparedby:
YourCompany
TABLEOFCONTENTS
SECTIONPAGE
1.TECHNICALPOLICYGUIDELINES1
2.GEOMETRICLAYOUT2
3.DESIGNLOADS2
4.MATERIALS6
5.SUPERSTRUCTUREDESIGN7
6.SUBSTRUCTUREDESIGN12
7.WALLDESIGN12
8.MISCELLANEOUS12
9.LOADRATINGS14
10.QUANTITIES14
1.TECHNICALPOLICYGUIDELINES
Thefollowingdesigncriteriaidentifytheparticularstandardsandprocedures,whichareusedforthebridgedesign:
1.1AASHTOLRFDBridgeDesignSpecifications,AmericanAssociationofStateHighwayandTransportationOfficials(AASHTO),3rdEdition,CustomaryU.S.Units,2004,withcurrentinterimrevisions.Thisreferenceisherebyreferredtoas“AASHTO”.
1.2AASHTOManualforConditionEvaluationandLoadandResistanceFactorRating(LRFR)ofHighwayBridges,AmericanAssociationofStateHighwayandTransportationOfficials(AASHTO),2003,withcurrentinterimrevisions.Thisreferenceisherebyreferredtoas“LRFR”.
1.3AASHTOSteelGuideSpecificationsforHorizontallyCurvedSteelGirderHighwayBridges,AmericanAssociationofStateHighwayandTransportationOfficials(AASHTO),2003.Thisreferenceisherebyreferredtoas“SteelGuideSpec”.
1.4AmericanAssociationofStateHighwayandTransportationOfficials(AASHTO)/NationalSteelBridgeAlliance(NSBA)SteelBridgeCollaborationdocumentsforsteelbridges.Thesereferencesareherebyreferredtoas“AASHTO/NSBA”.
1.5StandardSpecificationsforConstructionofRoadsandBridgesonFederalHighwayProjects,FP-03,U.S.CustomaryUnits,PublicationNo.FHWA-FLH-03-002.Thisreferenceisherebyreferredtoas“FP-03”.
1.6AASHTOLRFDBridgeConstructionSpecifications,AmericanAssociationofStateHighwayandTransportationOfficials(AASHTO),2ndEdition,CustomaryU.S.Units,2004withcurrentinterimrevisions.
1.7ManualofStandardPractice,ConcreteReinforcingSteelInstitute(CRSI)May,2003.Thisreferenceisherebyreferredtoas“CRSI”.
1.8ApplicableStateBridgeDesignManual,aaaDepartmentofTransportation(aaDOT),currentversionasofaaannnn,.Thisreferenceisherebyreferredtoas“aaDOT”.
1.9GeotechnicalInvestigation:
aaa,byaaa,Date.Thisreferenceisherebyreferredtoas“GeotechnicalReport”.
1.10HydraulicRecommendations:
aaabyaaa,Date.Thisreferenceisherebyreferredtoas“HydraulicsReport”.
1.11Otherpublicationsasnoted.
2.GEOMETRICLAYOUT
2.1Thebridgespans,horizontalandverticalalignment,andgeneralarrangementofthestructureisasshownonthefinalTypeSize&Location(TS&L)plan.
2.2Bridgewidth(out-to-out)isnn’-n”witharoadwaywidthofnn’-n”.
2.3aaatypebridgerailsareprovidedonthebridgewithaaatypetransitionrails.BothbridgeandtransitionrailshavebeencrashtestedtocertifyadherencetoNCHRPReport350,TL-ncriteria.
3.DESIGNLOADS
3.1LoadFactorsandLoadCombinations(AASHTO3.4)
3.1.1LoadcombinationsandloadfactorsareinaccordancewithAASHTOTables3.4.1-1and3.4.1-2.
3.1.2Forcurvedsteelgirderdesign,thesuperstructureconstructabilitylimitstateshallbecheckedinaccordancewithSteelGuideSpec3.3.
3.2PermanentLoads(AASHTO3.5)
3.2.1ComponentsandAttachedDeadLoads(DC)
(1)Concretewithreinforcingsteel=0.150kcf
(2)Structuralsteel=0.490kcf
(3)Stay-in-placedeckforms=0.nnnksf
(4)Bridgerailing=n.nnnklf(each)
3.2.2WearingSurfaceandUtilities(DW)
(1)Wearingsurfaceallowance=0.nnnksf
(2)Futurewearingsurfaceallowance=0.nnnksf
(3)Utilitiesallowance=0.nnnklf
3.2.3PermanentloadsappliedtothecompositestructurearedistributedevenlytoallgirdersperAASHTO4.6.2.2.1.
3.3LiveLoadandImpact(AASHTO3.6.1&3.6.2)
3.3.1ThemaximumnumberofdesignlanesisasspecifiedbyAASHTO3.6.1.1.1withmultiplepresencefactorsinaccordancewithAASHTO3.6.1.1.2.
3.3.2ThedesignliveloadisdesignatedasHL-93,andconsistsofacombinationof:
∙Designtruckordesigntandem,and
∙Designlaneload.
3.3.3Permitloadtobeconsideredisaaa.
3.3.4Pairsofdesigntandems,asdescribedinAASHTOC3.6.1.3.1,arenotconsidered.
3.3.5Deflectio
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