[PDF] 2-volume-2.pdf above the designed H.F.

MinistryofTransportDepartmentofSurfaceTransport(RoadsWing)©MINISTRY'STECHNICALCIRCULARSANDDIRECTIVESONNATIONALHIGHWAYSANDCENTRALLYSPONSOREDROADANDBRIDGEPROJECTSVOLUMEIIPublishedbytheIndianRoadsCongressOnbehalfoftheGovtofIndia,MinistryofTransportDepartmentofSurfaceTransport(RoadsWing)CopiescanbehadbyV.P.P.fromtheSecretary,IndianRoadsCongress,JamnagarHouse,ShahjahanRoad,NewDelhi - 110OIL

MainSubjectSubjectSub-TopicCode.TitleCode.TitleCode.TitleNo.No.No.PageNo.123124130Tenders,Contracts&Arbitration140N.H.LandControl141142143144145150LevelCrossings&Over/UnderBridges160LevyofFees&Tolls170HighwayOrganisationInstitutionalInfrastructure180AllocationofCement&OtherMaterials190Ceremonies&Misc.Directions191192RoadsofInter-StateorEconomicImportanceUnionTerritories&othercentrallycon-trolledroadworks,TribalRoads,StrategicRoads124.1124.2124.3124.4LandAcquisitionNHProperty - InspectionBungalows,Licencing,Status,AccessControlUrbanLinks,Byepasses,ParallelServiceRoads,Barriers143.1143.2143.3RibbonDevelopment,Encroachments&EvictionUtilityServices&CanalCrossingsCeremoniesMiscellaneousDirections123/1-7Centrallycontrolledworks124.1/1UnionTerritories124.2/MRoadsinTribalAreas124.3/1-7StrategicRoads124.4/1-2130/1-17141/1-4142/1-12UrbanLinks143.1/1-5Byepasses&Parallel143.2/MServiceRoadsBarriers143.3/1-2144/1-2145/1-10150/Ll3160/1-10170/1-12180/1-5191/1-3192/1

MainSubjectCode.TitleNo.SubjectCode.TitleNo.Sub-TopicCode.TitleNo.PageNo.200HIGHWAYPIANNING&ECONOMICS201HighwayPlanning&Budgetting201/1-8202HighwayInventory202/2-10203EconomicEvaluation203/1-2204PlanningTargets204/1205PlanningTechniques205/1-4ROADDESIGN301Survey&Investigation301/1-2302GeometricDesign302/1-10303PavementDesign303/1-8304Embankments&CutSlopes304/1-8305ProtectionMeasures&SpecialProblems - CanalLining,ErosionControl,Borrowpitpracticeetc.305/1-7GUIDELINESONCONSTRUCTION&RECONSTRUCTION&SPECIFICATIONS401WideningofRoads401/1-2402Materials402/1-2403Sub-base&BaseConstruction403/1-3404BituminousConstruction404/1-9405ConcretConstruction405/1-2406MiscellaneousGuidelines406/1407Specifications - seeMinistryofShipping&TransportSpecifica-tionforRoad&BridgeWorks(1stRevision),1981500CULVERTS,500/1-8CAUSEWAYS&DRAINAGE600TRANSPORTATION,PLANNING,TRAF-FICREGULATION&ROADSAFETY601TrafficCensus601/1-4602RoadSigns&Markings602/1-8603KilometreStones603/1-9

MainSubjectSubjectSub-TopicPageNo.Code.TitleCode.TitleCode.TitleNo.No.No.604HighwaySafety - Railings60STrafTicRegulation606Accidents607HighwayPatrolling608MotorVehiclesAct&Ordersthereunder.609TrafficCells700WAYSIDEAMENITIES,LANDSCAPING,SOILCONSERVA-TIONANDENVIRONMENTALPROTECTION701WaysideAmenities702Landscaping&TreePlantation703EnvironmentalPro-tection&SoilConservation800Blank900BlankVOLUME-U1000BRIDGEWORKS1100ProjectPreparation1200Sub-soilandHydraulicInvestigations1210SubsoilInvestigations1220HydraulicInvestigations1300Materials1310Cement1320Steel1400FormWorkRefertoIRC87-19841500Foundations1510WellFoundations1520OtherFoundations1600Sub-structureandBearings1610Sub-structure1620Bearings1700Superstructureandotherminorcomponents1710Superstructure1720ExpansionJoints1730WearingCoat1740RailingandApproachSlab604/1-4605/1-3606/1-2607/1-6608/1-20609/1-2701/1-14702/1-10703/1-11100/1-171210/1-21310/MBlank1510/1-2Blank1610/1-2i620/1-71710/1-141720/11730/1-61740/1

MainSubjectSubjectSub-TopicPageNo.Code.TitleCode.TitleCode.TitleNoNo.No.1800ProtectiveWroks1900Miscellaneous2000CONSTRUCTIONPLANTMACHINERYRefertorelevantIRCGuidimes(Underprint)1910Generaltopics1910/11920Safetymeasures.1920/1-21930Ratingandtestingofbridges1930/1-21940Securityofbridges - Blank1950Dismantling1950/11960Electrificationofbridges1960/11970Guidelinesregardingexecution1970/11980Corrosion1980/1-9&2100UtilisationofCentralMachinery2200HireCharges2300Maintenance&RepairEstimatesofCentralMachinery2400InventoryofCentralMachinery2500Condemnation&Dis-posalofCentralMachinery2600ModernisationofRoadConstruction2100/1-152200/1-242300/1-82400/1-242500/1-32600/1-22700TrainingofPersonnel2700/1-22800Workshops - Central/2800/1-6Divisional/Mobile2900Miscellaneous2910GrantofLoanAssis-2910/1tanceforMachinery2920Procurementof2920/1AdditionalSpareParts2930AccidentstoCentral2930/1Machines2940DisposalofMachines2940/1-2toStateP.W.Ds.3000QUALITYCONTROL3100Roads"19ft*3200Bridge3100/1-203200/1-6

MainSubjectSubjectSub-TopicPageNo.Code.TitleCode.TitleCode.TitleNo.No.No.4000MAINTENANCE,FLOODDAMAGEREPAIRANDPERIODICINSPECTIONS4100General41104120413041404200RoadMaintenance&Inspection421042204300BridgeMaintenance&Inspection431043205000PROGRESS,MONI-TORING,INSPEC-TION&COMPLETIONREPORTS5100ProgressReports&MonitoringofRoadConstructionandMaintenance5200Inspection5300CompletionReports6000ROADRESEARCH&APPLICATION6100Centra]AssessmentCommittee6200Research&Development6300ResearchApplicationMaintenanceNorms&ScopeAbstractParticularsMaintenanceManagementReleaseofFunds&Re-appropriation.MaintenancePro-cedureAOperation - MeasuresonFloodDamagesMaintenanceInspec-tion(SeeManualforMaintenance)ofRoadsMaintenancePro-cedureAOperationInspectionofBridges4110/1-334120/1-104130/1-24140/14210/1-64310/1-95100/1-28.5200/1-25300/1-36100/1-56200/1-9*300/1-8

1100PROJECTPREPARATIONCodeNaCircularNo.&DateBriefSubjectPageNo.1100.1.WI48(l£)/56MinimumDistancebetween1100/1121.2dL10.7.57ExistingandProposedBridges1100.2.PL-2(l)/70StandardProcedureforBridge1100/1121.2dL18.1.71ProjectPreparation1100.3.NHI-49(3)/71FixationofAlignmentofBridgesSeeCode121.2,302dL29.1.71andtheirApproachesNo.121.21100.4.NHII/Misc/12/75NeedforCorrelatingallBench1100/7121.2301dL27.75MarkswithGTSBenchMarks1100.5.NHIII/Misc/120/75(1)EstimateforConstructionofSeeCode121.2dL20.3.76BridgesonN.HsandApproachesthereto - SubmissionofNo.121.21100.6.NHIII/Misc/120/75CoordinationbetweenConstructionSeeCode121.2dL20.3.76ofBridgesandtheirApproachesNo.121.21100.7.NHIH/P/75/76GuidelinesregardingConstruction1100/8dL9.12.76ofNewBridgesattheExistingSites1100.8.PL-67(35)/76BridgesacrossIrrigationCanals1100,91121.2dL14.1.771100.9.NHIV-50(20)/77FixationofDeckLevelofH.L1100/10121.2,500dL27.9.77Bridges/Culverts1100.10.NHIII/P/30/77Co-ordinationbetweenConstructionbeeCode121.2dL19.10.77ofBridgesandtheirApproachesNo.121.2.1100.11.NHIII/P/30/77RequirementsforIntegrated1100/11/121.2dL25.2.78ProjectPlanningforBridgesonAdjacentStreams1100.12.NHIII/P/31/77ReferencesforBridgeProject1100/12121.2dL31.5.78Preparation1100.13.NHIII/P/5/77CoordinatedCompletionofSeeCode121.2dL13.7.78RealignmentofNHsdictatedbySubmergenceNo.121.21100.14.NHI/Misc/84/78Coordinationwithother1100/13121.2dL1.3.79DepartmentsRegardingbridgeProjects1100.15.NHVI/Misc/25/79CoordinationwithIrrigationAuthori-1100/14121.2dL11.7.79ties,IrrigationDams-Roads&BridgesAffected1100.16.NHIIl/P/13/80Improvement/Reconstructionof1100/15121.2dL6.10.80WeakandNarrowBridges1100.17.NHJII/Misc/137/78NormsforWorkingoutRequirements1100/15dL12.11.80ofMaterialsforBridges1100.18.NHIII/P/10/80PreparationofDetailedProjectSeeCode121-2dL30.12.80EstimatesforNHWorksNo.\i\.21100.19.NHTII/P/2/84SurveyandInvestigationsforSeeCode301dL3.5.84Road/BridgeProjectsNo.3011100.20.NHIII/P/31/77ModifiedProcedureforSubmission1100/16121.2dL10.1.85ofEstimatesforBridgescostingmorethanRs10lakhs

1100/11100.1,1212No.WI-48(18)/56Datedthe10thJuly1957ToAllStateGovernmentsSubject:ConstructionofnewrailandroadbridgeslamdirectedtosaythattheGovernmentofIndiahaveunderconsideration,thequestionregardingthedistanceatwhichnewroadand/orrailbridgesshouldbeconstructedfromexistingbridges.Itisconsidereddesirablethatthedistanceshouldbeaslargeaspossible,butnotlessthan400yardsinanycase.TheMinistryofDefencedesirethattheyshouldbeconsultedwheneveranewbridgeisproposedtobeconstructednearanexistingbridge.1100.2121.2.6No.PL-2(l)/70Datedthe18thJanuary,1971ToAllStateGovts,andAdministrationsofUTS(DepttsdealingwithRoads)Subject:StandardisationoftheprocedureanddataforpreparationofbridgeprojectsrelatingtoNationalHighwaysandOtherCentrallyAidedSchemeIamdirectedtosaythatthebridgeprojectsrelatingtoNationalHighwaysandOtherCentrallyAidedStateRoadsOfinter-StateorEconomicimportancereceivedinthisMinistryfromtheStateGovernments/LocalAdministrationsforobtainingGovernmentofIndia'stechnicalapprovalandfinancialsanctionshowconsiderabledivergenceintheirpreparationandpresentation.Inordertohaveuniformityofpracticeandtoensurethatprojectestimatesarepreparedinsufficientdetail,ithasbeenconsidereddesirablethatsomeguidelinesmaybelaiddownforthiswork.Thiswillalsoensurecollectionofcompletehydraulicandotherdataandalsoaproperandthoroughstudyandappreciationoftheproject2.TheneedforcarryingoutdetailedsurveysandinvestigationsandhavingauniformprocedurefortheirpresentationhadbeendiscussedattheChiefEngineers*meetingsalsofromtimetotime.AtthemeetingheldatKuluinOctober,1969,aproformahadalsobeendiscussed.Subsequently,thisproformawascirculatedtoalltheStateChiefEngineersandonthebasisofthecommentsreceivedfromthem,theproformahasnowbeenfinalisedinthisMinistry.Twoproformaehavebeendrawnup - oneforthepreparationofbridge-estimatesformajorbridges(length150metresormore)andtheotherformediumandminorbridges.Theseareenclosed.IamtorequestthatChiefEngineersdealingwithHighwayinyourState/TerritorymaykindlybeaskedtofollowtheseproformaewhilesubmittingbridgeprojectestimatesrelatingtotheNationalHighwaysandotherCentrallyaidedStateroads.EnclosuretoletterNo.PL-2(l)/70Datedthe18.1.71GUIDELINESFORPREPARATIONANDPRESENTATIONOFBRIDGESPROJECTS(ForallBridges-MajorandMinor)Anestimateforabridgeworkmustcontainthefollowingitems:(i)Report(ii)Specifications(iii)DesignData(iv)DesignCalculations(v)DetailedEstimates(vi)AnalysisofRates(vii)AbstractoftheEstimate(viii)ConstructionSchedule(ix)DrawingsandPlans(x)Sub-estimatefortheapproachroads.Theabow.Jemsareexplainedinbriefinthesubsequentparagraphs.

1100/23.REPORT - Adetailedreportisaveryimportantpartofanybridgeprojectestimate.ItshouldbesowrittenthataftergoingthroughitacompletepictureoftheprojectcanbevisualisedItshould,therefore,includethefollowinginformation.3.1.ReferenceoftheauthorityaskingfortheestimateandlocationofthebridgeLathemileageandnameoftheN.H.shouldbementioned3.2.ExistingConditions - Thepresentarrangementsforcrossing,briefdetailsoftheexistingbridge,ifany,itsroadwaywidth,loadingcapacityandpresentconditionofstructure.Itmayalsobementionedwhethertheexistingalignmentandgeometriesoftheapproacheswouldneedanychangeandifsoitsdetails.3.3.Necessityofthenewbridgeinrespectoftrafficneedspresentandfutureanditsbenefits.Referencetoanycostbenefitstudiesdone.Availabletrafficdata,andtheanticipatedgrowthoveraperiodof25-30yearsmaybegivenasfaraspossibleinrespectoflargebridges.3.4.Selectionofsite - Mentionofthedifferentalternativesitespossibleforthebridge,(markingthemasI,II,III)themeritsanddemeritsofeachsite.Itmayalsobementionedwhetherthefinalsitehasbeeninspectedandapproved,ifso,bywhom.Referenceofthebench-markwhichhasbeenusedforcarryingoutsurveyshouldbementionedItwouldbepreferabletocorrelatethebenchmarkandlevelswithG.T.S.BenchMarkandlevelsasfaraspossible3.5.HighFloodLevel - Howithasbeenfixedag,fromanyexistingfloodmarks,localenquiryorobservationonexistingstructures.3.6-Discharge - Methodsforworkingoutthedesigndischargeandthebasisforthevalueadoptedfordesign.3.7.Waterway - ThewaterwayrequiredIfpossible,itsadequacymaybediscussedincomparisonwiththenearbybridgesonthesamestream.Dataofrailwayorotherbridges,ifavailable,tobecollectedandfurnished3.8.Foundationinvestigations - Discussthetypeofsoilstrataandboringdata.3.9.Generalarrangementofthebridge - Thespanlengthadopted,theeconomicsofadoptionoftheparticularspanlengthandtypeoffoundationsandsuperstructure.3.10»Sub-structure - Typeoffoundations,piersandabutmentsadoptedDiscussthedepthoffoundationsrequiredwithreferencetothebearingcapacityofthestrataandthescourdepthswithreferencetoLacey'ssiltfactorandotherphysicalcharacteristicsofthesub-stratarevealedbysamplesoftheborings.3.11.Superstructure - Typeandbriefdetailsofthesuperstructure.3.12.RiverTrainingWorks - Discussthenecessityoftherivertraininb

1100/3(b)IndexPlan(c)Contoursurveyplan.(d)SitePlan(e)Thifcecross-sections(f)Longitudinalsection(g)Trialboringcharts(h)D'ringsofthebridgeshowinggeneralarrangementonthecross-sectionatsite,detailsoffoundationssub-structureaddsuperstructure(i)Elevation,sectionsandplansofexistingbridgesincludingfoundationdetails.NOTE1 - Thesuesofdrawingsheets(outsidedimensions)maybeanyoneofthefollowingbutalldrawingsheetsforoneprojectshouldbeofthesamesize,(i)1000mmX7Q0mm.(ii)700mmX500mm.(in)500mmX350mm.NOTE2 - AsfaraspossiblethescalesforvariousdrawingsmaybeasgiveninAnnexureIII.12.SUB-ESTIMATEFORAPPROACHROADS - Detailedestimateoftheapproachespreparedinaccordancewiththeguidelineslaiddownbythe"RoadsDirectorate"shouldinvariablyaccompanythebridgeestimateasPartB,sothatthereisnolikelihoodofthecostofapproachesbeingmissed.DESIGNDATAFORMAJORBRIDGES(Length150metresormore)ANNEXURE1AGENERAL1.Roadanditsclassifications2.NameoftheStream3.Roadchainageatcentrelineofthestream4.Whatarrangementexistsforcrossingtheriveratpresent:(a)Duringmonsoon(b)Duringdry"season.5.Hasearthquakeeveroccuredintheregionofbridgesite7Ifso,whatwasitsintensity?B.CATCHMENTAREA&RUNOFF6.Catchmentarea-fa)Inhillyparts(b)InplainsTotal_sq.7.Maximumrecordedintensityofrainfallincatchment8.Rainfallincentimetersperyearintheregion9.LengthofcatchmentinKilometres10.WidthofcatchmentinKilometres11.Longitudinalslopeofcatchment12.Crossslopeofcatchment13.Indicatebroadlythenatureofcatchment14.Arethereanvartificialornaturalstoragesuchaslakesetcinthecatchment15.Isthenatureofcatchmentlikelytochangesuchasduetoaforestation,deforestation?C.NATUREOFSTREAM16.Isthestream:(a)Alluvial(witnerodablebanks),or(b)Quasi-aJJuvial(withmoreorlessfixedbedbuterodablebanksXor(c)Rigid(withinerodablebanksandbed)17.Isthestream:(a)Perennial,or(b)Seasonal.18.Doesthestreammeanderorchangecourse?Ifso,theextentormeanderexperiencedinthepastbeshownonthesiteplan(incaseofmajorbridges,thecoursesoftheriver,particularlyduringvariousyears,aiqybeshownindifferentcoloursonthelargescaleplanforsufficientdistanceupstreamanddownstreamoftheproposedbridgesite).19.Arebanksattheproposedsite(a)Firmandsteep(b)Firmbutgentlysloping(c)ErodableandIndefinite(d)Doesthestreamconfineitselfwithinbanks,orovertopsbanksinfloods?20.Natureofstreaminthevicinityofproposedsite - (a)Cleanbed,straightbanksorriftsordeeppools(b)Asin(a)butwithsomeweedsorstones(c)Winding,somepoolsandshoals,butclean(d)Asin(c)butwithweedsorstones

1100/4(e)Stonysectionwithineffectiveslopesandshoals.(f)Sluggishriverreaches,ratherweedyorwithdeeppools.(g)Withveryweedyreaches.21.(a)Lowwaterlevel(b)SurfacevelocityatLW.LMetre/Second(c)WatersurfaceslopeatLW.LMetre/km.(d)BedslopeatLW.LMetre/km.22.(a)OrdinaryFloodLevel - (0atsite(ii)atU/Scross-section(iii)atD/Scross-section(b)SurfacevelocityatO.F.LMetre/Sec.(c)Water-surfaceslopeatO.F.EMetre/km.(d)AreaofX-sectionatsiteatO.F.LSq.Metres.(c)DischargeatO.F.LCu.M/Sec.23.(a)HighFloodLeveL(i)atsite(ii)atU/Scross-section(iii)atD/Scross-Bection(b)SurfacevelocityatH.F.LMetre/Sec.(c)Water-surfaceslopeatRF.LMetre/km(d)AreaofX-sectionatHFL(i)atsite(ii)atU/Scross-section(iii)atD/Scross-section(e)DischargeatH.F.LCu.-M/Sec24.R.LandlocationofmaximumrecordedscourbelowRF.L25.R.LofmaximumanticipatedscourbelowH.F.L.26.Locationontheplanofboringstakeninthebedoftheriveratproposedbridgesiteavailable.27.Testresultsofthesamplesofbores,givingthereinthevaluesobtainedofthesoilavailableatdiffethefollowing:(a)Meandiameteroftheparticleinmm(b)ValueofLacey'ssiltfactor.(c)Angleofinternalfriction(O).(d)Cohesion(C).(e)Angleofwallfriction(S).28.Allowablebearingcapacityofthestrataatfoundationlevelintonnespersq.meter - (a)calculatedtheoretically(b)calculatedbyconductingstandardtest(ifcarriedout)29.Docsstreamcarrydriftingmatterinfloods?Ifso,stateitsnature,suchasbushes,treebranches,bouldersetc.30.Arebankssusceptibletoscour?Ifso,indicatetheextentofcuttingofbanksoccurredinthepast.31.Isstreamnavigable?Ifso,theclearancerequired?32.Arelargescalerivertrainingworksnecessary?Ifso,givethefollowingdetailedplans(a)Courseofthestreamforsufficientdistanceupstreamanddown-streamofthebridgesiteindicatingindifferentcolourscoursesadoptedbytheriverindifferentyears,(b)Contoursurveyplanofthebedoftheriverbothontheupstreamanddown-streamofthebridgeextendingtoadistancebeyondthelocationoftheproposedguidebundsorotherprotection.(c)Aplanshowingthemaximumloopchordratioattainedbythestreaminthevicinityofthebridgesite.(d)Anyotherplansconsiderednecessaryforproperappreciationoftheproposalforprotectiveworks.Ifanymodelexperimentshavebeencarriedout,acopyofthereporttobeattached.D.ALIGNMENTANDAPPROACHES33.Istheproposedalignmentofthebridgeskewornormaltochannel?Ifskew,giveangleofskew.34.Willapproachbestraight?Ifnotgiveradiiofcurveson.(a)Rightapproach(b)Leftapproach35.Proposedgradientsinapproaches:(i)Rightapproach(ii)Leftapproach36.Willvisibilityofbridgebeunobstructedupto50Metresoneithersideofthebridge?Ifnot,givedetails,37.Proposedtypeofsurfaceofapproaches.ESUPERSTRUCTURE38.Proposedclearroadwayoverthebridge39.Proposedwidthoffootpaths,ifnecessary.40.(a)ProposedformationleveloftheroadoverthebridgeattheCentre.(b)Gradient,ifany,intheroadformationalongthelengthofthebridge.(c)Camberintheroadformation.

1100/541.Istheproposedbridgetobedesignedtopass - (a)Maximumfloods(b)Ordinaryfloodswithdipstopassexcessdischargeinhighfloods(c)Onlydryseasondischarge(Submersiblebridge)41NumberandsizeofspansrecommendedF.FOUNDATIONS43.Whattypeoffoundationsarcrecommended*?(1)Openfoundations(2)Wellfoundations(3)R.C.PilefoundationsG.EXISTINGSTRUCTURES44.Doanybridgesexistonthestream?Ifso,havetheirpositionsbeenmarkedonIndexPlan?45.Detailsofeachoftheexistingbridges:(a)SizeandNo.ofspans(b)Typeofsubstructure(cjTypeofsuperstructure(d)Typeanddepthoffoundations(e)X-sectionalareaatRF.Lundeibridges(0Isthewaterwayfoundtobeadequateorexcessiveorinadequate?(g)Whetherthefoundationshavebeentroublefreeanddepthprovidedisadequateorinadequate.(h)AnyotherinformationH.MISCELLANEOUS46.Nameofnearesttownanditsdistancefromsite47.IsaccommodationavailableatsiteorintheneighbourhoodforconstructionstafT?48.NearestrailwayStationanditsdistancefromsite49.Costatsiteofthefollowingmaterials - (GiveinformationinrespectQfitemsofmaterialsapplicable)(a)BrickIClass(b)Masonrystone(c)Stoneballast(d)Dressedstoneforarches(e)3/4"gritforRCCwork(0Sandformasonrywork(g)SandforRCCwork(h)Cement.(i)MildsteelbarsandM.S.stmcturals(j)SalWood(k)Bouldersorblockkankarforpitching50.Havethefollowingbeenencloseddulycompleted?PlansatSerialsIxc^e,andftobeasperprovisionsinClause101ofI.R.C.BridgeCode,Section1(a)KeyMap-Scale1cm. - 50km.(b)IndexPlan(c)Contoursurveyplan(d)SitePlan(e)ThreeX-section(f)LongitudinalSection(g)TrialBoringCharts(h)Drawingofthebridgeshowinggeneralarrangementonthecrosssectionatsite,detailsOffoundations,substructureandsuperstructure(i)Elevation,sectionsandplansofexistingbridgesincludingfoundationdetails.NOTE:Thesizesofthedrawingsheets(outsidedimensions)maybeanyoneofthefollowing*butallthedrawingssheetsforoneprojectsnouldbeofthesamesize:(i)1000mmX700mm(ii)700mmX500mm(iii)500mmX350mmAssistantEngineerExecutiveEngineer1.Theproposedsiteforthebridgehasbeeninspectedby2.AnyotherremarksconsideredworthmentioningbytheSuperintendingEngineerSUPERINTENDINGENGINEERANNEXUREIIDESIGNDATAFORMEDIUMANDMINORBRIDGES(Leasthan150metresinlength)A.GENERAL1.RoadSLitsClassification2.Nameofthestream

1100/7(d)Whethertheexistingstructuresaretroublefree(e)AnyotherinformationH.MISCELLANEOUS29.Nameoftownnearesttobridgesite30.NearestRailwayStationanditsdistancefrombridgesite31.Costatsiteofthematerialsrequiredforconstruction32.Havethefollowingplansbeenencloseddulycompleted(a)KeyMap - Scales1cm=50Km.(b)IndexPlan(c)ContoursurveyPlan(d)SitePlan(e)Longitudinalandthreecrosssectionsoftheriver(0Trialboringcharts(g)Drawingofthebridgeshowinggeneralarrangement,detailsoffoundations,sub-structureandsuperstructure(h)Elevation,sectionandplansofexistingbridgesincludingfoundationsdetailsNOTE - Thesizesofthedrawingsheets(outsidedimensions)maybeanyoneofthefollowingbutalldrawingssheetsforoneprojectshouldbeofthesamesize.(i)1000mmX700mm(ii)700mmX500mm(iii)500mmX350mmANNEXUREIIISCALESRECOMMENDEDTOBEADOPTEDINTHEPREPARATIONOFDRAWINGSFORBRIDGEWORKS1.(a)KeyPlan1/5000000(b)IndexPlan1/500002.ContourSurveyPlan(a)ForcatchmentArealessthan15sq.Km.1/1000(b)ForcatchmentAreaof15sq.Km.ormore1/50003.SitePlan.1/25004.Cross-sectionoftheriver(a)Horizontal1/1000(b)Vertical1/1005.Longitudinalsectionoftheriver(a)Horizontal1/2500(b)Vertical1/1006.GeneralArrangementDrawings(a)Elevation - Tosuitthesizeofthedrawingsheet(b)Plan1/200(c)Section1/1007.Detailsoffoundations(a)Curb1/10(b)Steining1/508.Detailsofsubstructure1/509.DetailsofBearings10.DetailsofSuperstructure1/5(a)DeckSlab1/20(b)Beamslongitudinalsection1/20(c)BeamsCross-section1/101100.4.121.2,301No.NHU/Misc./12/75Datedthe2ndJuly,1975ToAllChiefEngineers/Addl.ChiefEngineers,ofStatesPWDsandUnionTerritoriesdealingwithNationalHighwaysSubject:LevelsurveyingforNationalHighwayRoadandBridgeprojects-ReferencetoG.T.S.BenchMarksYouwillkindlyrecallthatinthisMinistry'sletterNo.PL-2(l)/70,datedthe18thJanuary,1971regardingstandardisationoftheprocedureanddataforpreparationofBridgeprojectsrelatingtoNationalHighwaysnildotherCentrallyaidedschemes,theguidelinesforpreparationandpresentationofbridgeprojectswere

1100/101100.9.121.1500NO.NHIV-50(20)/77Datedthe27thSeptember1977ToTheChiefEngineers/AddLChiefEngineersoftheStateP.W.D'sandUnionTerritories(dealingwithNationalHighways)Subject:FixationofthedecklevelofHighLevelbridgesandculvertsacrosscross - drainageforNationalHighwaysThedecklevelsofhighlevelbridgesandculvertsaregenerallyfixedafterallowingforthenecessaryverti-calclearancesinaccordancewiththeprovisionscontainedinClause106ofI.R.C.BridgeCodeSectionI.This,insomecases,mayresultinthedecklevelsasworkedoutbeinglowerthanthefinishedroadformationleveloftheapproaches,arrivedatafterallowingforthenecessaryverticalclearanceof1metreforthesubgradelevelabovethedesignedH.F.L,inaccordancewithpara2ofthisMinistry'scircularletterNo.PL-67(12)/76dated10thSept1976(copyenclosedforreadyreference).2.Inordertoensurethatsuchabruptchangesinlongitudinalprofileoftheroadareavoided,ithasnowbeendecidedthatinallsuchcases,thebridgeorculvertdecklevelsshallberaisedtobeinlinewiththefinishedadjoiningroadformationlevels,andinnocaseshouldtheclearanceabovetheaffluxedH.F.Ltothetopoffinisheddecklevelbelessthan1.75metres.ThisisalsosubjecttotheminimumfreeboardrequirementabovetheaffluxedHFLtothebottomofdeckasspecifiedinClause106ofSectionIofIRCBridgeCodebeingdulysatisfied3.Theseinstructionsshallbekeptinviewwhilepreparingproposalfornewbridgesandculvertsandwhereverpossiblemaybeincorporatedinallothercaseswhichhaveyetnotbeenputtotender.4.Theseinstructionsshall,however,notapplytocaseswherethefinishedroadformationlevelhasbeenkepthigherfromotherconsiderationse.g.bridgesonvalleycurves/bridges,overbridgesandunder-passes,etc.No.PL-67(12)/76Datedthe10thSeptember,1976ToTheChiefEngineers/AddLChiefEngmeersofStatePWDsandUnionTerritories(dealingwithNationalHighways)Subjeci:Fixationofgrade-linefornewroads/sectionsofexistingroadsproposedtoberaisedAnimportantconsiderationinthedesignofnewroads,ortheraisingofexistingsectionsduetosubmergence,isthefixationofgrade-linewithreferencetoHFLorthewatertabic.PresentinstructionsofibeMinistrycontainedincircularletterNo.NHI-36(2)/70datedthe2ndApril1970.arethatthesubgradeshouldbekeptatleast2ft.abovetheHFLandinthecaseofwaterloggedconditions,dueconsiderationshouldbegiventotheraisingofformationtoasuitablelevelabovethesubsoilwaterlevelaswelloradoption-ofotherrecoinmendedmeasuresagainstwater-logging2.Since,NationalHighwaysoccupyakeypositioninthecountry'sroadnetwork,anditisdesirabletokeeptheseopentotrafficwithleastdisruption,inmodificationoftheEarlierinstructionsithasnowbeendecidedthatthesubgradelevelonnewroadsorsectionsprorposedtoberaisedshouldbekeplatleastonemetreabovetheHFLWherewaterloggingconditionsapply,aftercarefulexaminationoftheinvolvedfactors,theembankmentshouldberaisedtoasuitablelevelabovethewatertableaswell,andothermeasuressuchasdeepdrainsArapillarycutoffsadoptedonthelinesof1RC34-1970"RecommendationsforRoadConstructioninWaterloggedAreas"sothatthesubgradeisnotsaturatedduetocapillaryaction.3.InfixingthedesignHFL,careshouldbegiventothepossibleriseinwaterlevelduetosuchfactorssuchtheembankmentoftheroaditself,constructionoftheWaterwayatbridges,andgradualaccretionofwaterlevelbecauseofsiltationofthedrainagecourses.Wheresub-mersiblesectionofanexistingroadistoberaised,additionalcross-drainagefacilitiesshouldbeprovided,asrequired,sothatcrossflowoffloodwatersisensuredthatwithoutanyheadingup4.Ingeneral,whenraisingproposalsareformulated,effectonadjoiningsectionofthehighwayshouldalsobesimultaneouslycon-sidered.Itwillbeadvisabletoframeanintegratedplanforastretchofreasonablelengththandesigningpiecemealproposalsforshortsections.

1100/111100.11.121.2No.NHIII/P/30/77Datedthe25thFeoruary1978ToAllStateChiefEngineers(dealingwithNationalHighways)Sub:Requirementforintegratedprojectplanningforconstructionofbridgesonadjacentstreamswithover-lappingcatchmentsandapproachestothesameVariouscircularshavebeenissuedbytheMinistryfromtimetotimeandsomeguidelineshavealsobeengivenintheIRCcodesaboutthepreparationofprojectestimatesforNHroadandbridgeworks.InthisMinis-try'scircularNo.NHIII/P-30/77dated19thOct1977,theneedforsimultaneoussubmissionofestimatesforbridgesandapproachestothesamewasalsoemphasisedTheideaunderlyingthiscircularwastoensurethatboththebridgesandapproachescouldbecommencedandcompletedsimultaneouslyandthrownopentotraffic,toavoidasituationofthebridgesbeingcompletedwithoutapproachesorviceversa.Besidesthisessen-tialrequirement,thepreparationofacombinedprojectwillalsohelpavoidingdiscrepanciesindesigndatasuchasHFL's,freeboard/clearancesaboveHFL's,Benchmarks,etc.,whicharelikelytocropupiftheprojectsforthebridgeandapproachesarepreparedseparatelyandatdifferenttimes,andmaygounnoticedduringtheirpreparationorevenduringfurtherchecksexercisedatdifferentlevelsbytwoindependentorganisationsexclusivelydealingeitherwithbridgesorroads,forwantofpropercoordination.InaparticularinstancethathasrecentlycometothenoticeoftheMinistry,therearetworiversincloseproximitywithoverlappingcatchmentsseparatedbyafloodbank,andtwobridgeshavebeenconstructedacrossthesame,adoptingtwodifferentHFL'sdifferingbyabout2metres.Theapproachestothesebridgeswere,however,basedonHFL'swithadifferenceofonly0.2mandthereferencebenchmarkswerealsodifferentAfterafewyearsoftheircon-struction,duringonefloodseason,thefloodbankdevelopedsomebreachesintheupperreaches,thefloodwatersinthetwocatchmentsgotmerged,andcausedheavydamagestotheapproachesduetooverflows,andoneortwominorbridgesprovidedintheapproacheswerealsoseverelydamaged.Althoughthedamagescouldbeattributedtotheunexpectedbreachingofthefloodbank,thedamagecouldperhapshavebeenminimised,hadthebridgesandapproachesbeendesignedforthecorrectHFL'swithoutanydiscerpancies,andifproperenquirieshadbeenmadeaboutthestabilityanddependabilityoftheexistingfloodbank.Intheabsenceofco-ordinatedeffortestimatessanctionedonthebasisoffaultydatamayleadtounsatisfactoryperformanceoftheroadalignmentaswellascrossdrainagestructures.Withaviewtoavoidingsuchsituationsinfuture,itissug-gestedthatincaseofbridgesandapproachestheretoacrossriversorstreamsnothavingwelldefinedandindependentcatchmentswhichmaygetoverlapped,thefollowingadditionaldata/informationshouldbefur-nishedalongwiththeprojectestimates: - (1)Ifthe2(ormore)streamsbranchoffasingleriverintheupperreaches,thetotaldischargeintheparentriver,thedischargestobeapportionedbetweenthediffemtbranches,theirHFL'sattheproposedbridgesitesetc.shouldallbeascertainedfromtheirrigationorthefloodprotectionauthoritiesinthatarea.(2)Thevulnerabilityorthestabilityoftheexistingfloodbanks(dividingthecatchments)basedontheirpastperformancetobeascertainedfromtheirrigationauthorities,anddulytakenintoaccountfordecidinguponsuitablefreeboardfortheapproaches,clearanceunderthebridgedeck,depthoffoundationsforthebridgeetc,sothatintheeventofoccurrenceofdis-chargesofHFL'shigherthanthedesignedfigures,thebridgeandtheapproachescouldremainintactwithminimumdamage,ifany.(3)Irrigationandothermultipurposeriverprojectsundertakeninthearea,theiroperationalmodesandtheircontrollingabilitiesonthedischargesoftheriver,aswellastheirinfluenceonthescourorsiltingupofbedinthedifferentbranches.(4)Irrigation/FloodControlprojectsundertaken/proposedtobeundertakenbytheconcernedauthoritiesonsomeotherriversysteminthisareawhichmayhaverepercussionsontheflowaswellasthelevelsinthestreamsproposedtobebridged.(5)Theroadnetworkinthearea,theexistingmajorandminoropeningsthroughthem,theflowpattern,thesubmergencerecordsetc,ofthesameandhydraulicdetailsofexistingbridgesforaconsiderablelengthu/sandd7softheproposedbridgesites.(6)AnyRailwaybridgesintheareaiflocateddosebywithintheinfluencezoneofthestreamsproposedtobebridged,theexist-ingwaterwaysthroughthem,theHFLetcrecordedontheconcernedstructures,andotherhydraulicparticulars.(7)Probabilityofoccurrenceofparallelflowalongapproaches,andifso,suitableremedialmeasures;(8)Natureoffillmaterialsandtheiravailabilityforthepurposeofconstructionofapproaches.(NoborrowingofearthinKhadirportionofriversshouldbeproposed);(9)Theneedforanytrainingworksintheformofguidebundsorgroynes,andthedesirabilityorotherwiseofprovidingcross-drainageopeningsintheapproachestobesubstantiatedifnecessary,bymodeltestsconductedinriverresearch(10)Necessityofprotectivemeasures,ifany,alongtheapproachesincludingtheimmediateapproachesoftheculvertsproposed

1100/12intheapproachalignment;(II)Othermiscellaneousfactorslikeintersectionwithlocaltraffic,socialandeconomicconsiderations,eta*Variousalternativesmaybeoutlinedforbridgecrossingsandapproachestheretoinsuchcases,keepinganeyeoneconomyaswellandtheprojectreportsforthevariouscomponentsoftheschemeshouldbefurnishedinanintegratedmannersoastoarriveatacom-prehensivesolution.TheseprojectreportsshouldalsobeinconformitywiththegukKelines/drculars/codalrequirementsandshouldinter-aliacoverthepointsmentionedabove.Thismaypleasebenotedforfutureguidance.1100.12.121.2No.NHm/P/31/77Datedthe31stMay.1978ToAlltheChiefEngineers/Addl.ChiefEngineersofStates/U.Ts.dealingwithRoadsSubject:Needforproperandthoroughsurvey,investigationandpreparationofbridgeprojectsTheimportanceofproperandthoroughsurvey,siteinvestigation,surfaceandsub-surfaceexplorations,collectionofhydraulicdataandotherinputsleadingtothepreparationofeconomicalandwellplannedbridgeprojectshavetimeandagainbeenimpressedupondieStateChiefEngineersthroughnumerouscircularlettersinthepast2.Inordertofacilitatethefieldengineersinpreparingandpresentingadequatelyinvestigatedroadandbridgeprojects,thisOfficehaspreparedaconsolidatedlistofIRCCodes/SpecialPublications/Ministry'sCircularsandGuidelinesissuedsofaronbridgeprojectpreparationetc.andthesameisenclosedItissuggestedthatthepreparationofCentralandCentrallysponsoredbridgeprojectsbesuitablybasedontheseCodes/Circulars/Guidelines.TheconsolidatedlistofreferencesmaybebroughttothenoticeofalltheengineersinyourDepartmentengagedintheworkofsurvey,investigationandpreparationofbridgeprojects.GROUPISURVEYANDINVESTIGATIONS1.LR.GBridgeCodeSectionI,I.R.G5 - GeneralFeaturesofDesign.2.MinistryofShipping&Transport(RoadsWing)Circularletters:i)NHV-ll(6)/73dated19.11.74 - EnsuringSafetyofbridgestructures - GuidelinesforEngineersii)NHIII/P/15/78dated26.4:1978 - GuidelinesforsubsurfaceInvestigationsforBridgeFoundationsiii)NHlI/Misc/12/75dated2.7.1975 - LevelSurveyingforNationalHighwayRoadandBridgeProjects - ReferencetoG.T.S.BenchMarksiv)NHI-40(3)/71dated29.1.71 - SitingofbridgesandfixationofalignmentofapproachesthereioonNalionatHighwaysandotherCentrallyfinancedroadprojects3.I.R.GSpecialPublication9."Reportonratingofbridges"GROUPIIPROJECTPREPARATIONI.MinistryofShipping&Transport(RoadsWing)Circularletters - i)No.PI^2(l)/70dt18.1.1971,"StandardisationoftheProcedureanddataforpreparationofBridgeProjectsrelatingloNationalHighwaysandotherCentrallyaidedschemes"ii)No.NHII1/P/30/77dated19.10.1977,"Needforcooidinationbetweentheconstructionofbridgeandtheirapproachesforthecompletionofboththecomponentssimultaneously"iii)NHIII/Misc/5l/73dated19.10.1973,"Properlocationofculvertsandbridges,andselectionofappropriatedesignofparapet/handrailsforthese,sothatthestructuresfitinwellwiththeroadside"iv)No.8/GR/128-W-NHVIdated8.10.1975"Constructionofguidebundsfortrainingofrivers - Provisionofextraheightascompensationforanticipatedsettlementofembankmentofguidebtmds"v)NHM/P/75/76dt9.12.1976,"Constructionofnewbridgesonnationalhighwaysatthesitesofexistingbridges - Guidelinestobefollowedincaseof'vi.)NHII1/P/I/75dated24.11.75,"ElectrificationofbridgesonNationalHighways"vii)PL-67(35)/76dated14.1.1977,"ConstructionofbridgesacrossirrigationcanalsanddistributoriesonNationalHighwaysandothercentrallyfinancedroads"viii)PD67(4)/76dated213.1977,"CriteriaforfixingthetoplevelofGuideBunds,ApproachesbehindGuideBundsintheKhadirwidthPlainofriverWHICHareconstructedbyroadembankments"ix)NHIV-50(20)/77dated27.9.1977,"FixationofthedecklevelofhighlevelbridgesandculvertsacrosscrossdrainageforNationalHighways"x)NHIII/P/30/77dated25.2.1978,"Requirementforintegratedprojectplanningforconstructionofbridgesonadjacentstreamswithoverlappingcatchmentandapproachestothesame"portionofriversshouldbeproposed);

1100/13xi)PL-30(20y77dated21*2.1978,"GradientsforapproachestoRailwayOverbridgesonNationalHighways"xii)NHI-37(2/70dated24.1970,"PlanfortheDevelopmentofNationalHighwaysduring1970-71"xiii)LR-16(150/66dated21.121971."ProvisionofwearingcoatonbridgesandculvertsbeingconstructedonNationalHighwaysandotherCentrallyfinancedroads"xiv)RM-16(1/71dated23.10.1974,"ReportoftheCommitteeonEconomyinconsumptionofsteel."GROUPIIIGENERALGUIDELINESONDESIGNOFHIGHWAYBRIDGESt.I.R.C.BridgeCodesi)SectionI - GeneralFeaturesofDesignii)SectionII - LoadsandStressesiii)SectionHI - CementConcrete(PlainandReinforced)iv)SectionIV - Brick,StoneandBlockMasonaryv)SectionV - SteelRoadBridgesvi)SectionVI - CompositeConstructionforRoadCulvertsandMediumSpanBridges2.IRC:18 - DesignCriteriaforPrestressedConcreteRoadBridges(Post-tensionedConcrete)3.IRC:45 - RecommendationsforestimatingtheResistanceofsoilbelowthemaximumscourlevelinthedesignofwellfoundatinforbridges4.IRCSpecialPublication13:"Guidelinesforthedesignofsmallbridgesandculverts."5.IRCSpecialPublication9:ReportonratingofBridges"6.MinistryofShipping&Transport(RoadsWing):"SpecificationforRoadandBridgeWorks"7.MinistryofShippingATransport(RoadsWing)Circulars - i)NHIH/P/75/76dated9.12.1976 - "Guidelinesforconstructionofbridgesinplaceofexistingbridges"ii)PL-86(4/74dated8.2.1976,"MaximumallowablediameterofHighYieldstrengthdeformedbars"iii)PL-87(16/75dated26.3.1975,"DesignProcedureforshearinPrestressedconcreteReamsofRoadBridgesforallbridgeworksonNationalHighwaysandotherCentrallyAidedschemes - Provisionalmodificationstoclause141ofIRC:18 - 1965(DesignCriteriaforPrestressedconcreteRoadBridges) - Regalsocorrigendumonabovevideletterofevennumberdated2.7.1975.iv)SP-67(6/61dated7.5.64,NoticeinvitingtendersforconstructionofbridgesfinancedinfullorinpartfromtheCentralFunds - WellsfoundedonRockv)Transport - CommunicationMonthlyReviewSept1952NoteissuedbyM.O.T."BridgesinSpillZonesofBigstreamsorrivers"vi)PL-67(17/68-SPdated7.6.1968,"LoadingconditionsofbridgeswithT-HeadorHammerheadpiersduringerection"vii)SP-67(1/65dated28.7.1956,"Designingoffootwaysonroadbridgesfora4-Tonwheel - Uniformprocedurefor8.MinistryofShippingATransport(RoadsWing):StandardDesigns - i)StandardPlansforHighwayBridges.Vol.Icomprising(Noteformildsteelreinforcement)(A)R.GGsimplysupportedslabbridgesa)withoutfootpaths - spans3,4,5.6&8m.b)withfootpaths - spans4.6&8m(B)R.C.C.simplysupportedskewslabbridgewithoutforpaths - skewangle15°to60°spans5,6&8m(C)R.C.C.T-ReamBridges-withandalsowithoutfootpathsspans10,12,15,20and25m(D)CompositeconstructionBridge-withoutfootpalhs-span12mm(E)R.C.C.BoxcellBridgeswithoutfootpathscellsof3mclearspan-height1.5,2&25m(F)R.C.C.RailingsforBridgeswithandalsowithoutfootpaths-TypesLIIAIII(d)Wearingcoat,expansionjointsandDrainagespoutsii)StandardPlansforHighwayRridges-Vol.11comprising(Note:forHighyieldstrengthdeformedbars)(A)R.C.C.slabtyperightbridgeswithandwithoutfootpaths-spans3.37to10.37mwith1rainterval(B)R.C.Cpiersforbridgesin(A)above(C)R.C.C.slabtypeskewbridges-skewangle15°-60°(a)withfootpath-spans4.37to837m(b)withoutfootpath-spans537to837miii)StandarddrawingsforRC.CT-Beamsuperstructureusinghighyieldstrengthdeformedbars.(a)withoutfootpaths-spans-10.5to21.75m(b)withfootpaths-spans-10.5to16.5m1100,14.121.2No.NHI/Misc/84/78Datedthe1stMarch.1979ToTheChiefEngineersofalltheStatesandU.Ts:(dealingwithN.H.)andothercentrallysponsoredworksSub:ConstructionofbridgeprojectsonNationalHighways-Co-ordinationwithotherdepartments-regarding.AcasehascometoournoticewhereabridgeprojecttakenupbytheRoadauthorityinthenormalcourse

1100/14hadtobeabandonedhalfwaythroughresultingininfructuousexpenditurebecauseinthemeanwhile,theIrrigationDepartmentofStatetookuptheconstructionofadamdownstreamofitandthereservoirofthedamwouldsubmergethebridgeandapproaches.Thislackofco-ordinationbetweenthetwodepartmentsoftheStatphasbeenadverselycommentedbytheComptroller&AuditorGeneral.Inordertoavoidanysuchsituationinfuture,properco-ordinationmustbeestablishedbetweentheStateP.W.D.andotherexecutiveDepartmentsliketheIrrigationDepartmentevenattheplanningstageofthepro-jectAsfarasNationalHighwayandotherCentrallysponsoredworksareconcerned,itissuggestedthatwheneveranyproposalsaremadefortheconstructionofnewbridges,acertificateshouldbegiventhattheStateIrrigationandotherDepartmentshavebeenconsultedandthebridgeprojectinquestionwillnotbeaffectedbyanyfuturedevelopmentplansthatthoseDepartmentmayhaveinthatareaandthattheproposedbridgewouldnotberenderedinfructuousbytheconstructionofanystructurebeingplannedbytheIrrigationorotherDepartmentThecontentsofthislettermaypleasebebroughttothenoticeofconcernedinyourStateincludingIrriga-tiondepartmentfortheirguidance.1100.15.121.2No.NHVI/Misc/25/79DatedthelltkJuly,1979ToAlltheChiefEngineersoftheStates/UTs(dealingwithN.HsandotherCentrallysponsoredworks]Subject:NHsandotherCentrallySponsoredWorks - IrrigationDaras-RoadandBridgesaffectedKindlyrefertothisMinistry'scircularletterNo.NHI/MSC/84/78,dajedthe1stMarch,1979(copyenclosed)inwhichthenecessityofestablishingproperco-ordinationbetweentheStateP.W.DsandotherDepartmentsliketheIrrigationDepartmentetc.evenattheplanningstageofprojectwasstressed.2.Thereisimperativeneedfortimelyexpediticcoordinatedpursuitofrequirementstore-locateorraiseanyN.H.sections(roadandbridges)whereoccasionedbytheback-waterofanynewdam/irrigationreservoirs,plannedtobeputupbytheIrrigationauthorities.IthasbeentheexperienceofthisMinistryforthelasttwoPlanperiodsthatactivityoftheStateP.W.D.inregardtosuchN.H.requirementhasseriouslylaggedbehindpursuitoftheirrigationprojectsbytheirrigationauthoritieswiththeresultthatmuchvaluabletimeislostwhichleadstotheStateP.W.D.authoritiesinchargeofN.H.systemracingwitfetimeinthelatterphaseoftheirrigationprojectexecutionperiods.3.1.AtthestartofeveiyFive-YearPlan,theStateauthoritiesinchargeoftheN.H.systemshouldhaveameet-ingwiththeStateauthoritiesinchargeoftheirrigationtoknowaboutalltheprogrammesofdamconstructionandtherequirementsforraising/relocationoftheN.H.systemandthentochalkoutaco-ordinatedpro-grammewiththeconstructionofthedambytheI.B.forthemodificationoftheN.H.systemwhereneededinconsequenceofthecomingupofthedam.32.Forallsuchrequirementsofroadrelocation/raising,theStateauthoritiesinchargeoftheN.H.systemshouldcarryoutpreliminaiyrecceesurveyandthenimmediatelyassociatetheOfficersofthisMinistryfromtheRegionalOfficeandHqrsforajointrecceesurvey,thereafterthroughjointdiscussionofhigherofficersandifnecessaiyassociatingC.W.C.officerspreliminariesshouldbegotfinalised-uponwhichdetailedsurveyanddesignsetc.oftheproposeddiversion/reconstructionprocessedbytheStateauthoritiesinchargeoftheN.H.systeminconsultationwiththeStateauthoritiesinchargeoftheirrigation.33.ThecostapportionmentbetweentheRoadauthorityandIrrigationauthorityshouldalsobeworkedoutbytheStateP.W.D.TheRoadsWingmaybeconsultedwherevernecessary.4.Theintentionofthiscircularistoemphasizethattheseimportantprojectrequirementsshouldspeedilymovethroughjointcoordinatedpursuitandeffortsratherthanbeinglefttomereexchangeofcorrespondencetoarriveatdecisionsanditisimperativethatdelayshavetobecutout

1100/166.CEMENT(i)ForMajorbridges2.00(ii)ForMinorbridges2.00(iii)Forculverts(Averagelengthofculvert:5A.)2.507.COARSEAGGREGATE(i)Formajorbridgesmorethan500ft..inlength.150eft(ii)FormajorbridgesLessthan500ftinlength.175(iii)Forminorbridges.150(iv)Forculverts.5001100.20.121.2No.NHIII/P/31/77Datedthe10thJanuary1985ToTheSecretary,PublicWorksDepartmentandChiefEngineersofStatePWDs&UnionTerritoriesdeal-ingwithNationalHighways&otherCentrallyFinancedRoads,D.G.Works,CPWD,andD.G.B.RSubject:BridgeworkscostingmorethanRs10lakhseachonNationalHighwaysandunderotherCentrallyFinancedSchemes - modifiedprocedureforsubmissionofdetailedestimatesofcostthereofWithaviewtoimprovingthequalityofpreparationofbridgeprojects,detailedguidelineshavebeenissuedbytheMinistryfromtimetotime.Inthisconnection,thefollowingimportantCircularlettersmaykin-dlybereferredto(i)PL-10(48)/69dated15.9.69(ii)PL-2(l)/70dated18.1.71(iii)NHIII/P/31/77dated31.5.78Itmaykindlybenotedthatcompleteandadequatesurveysandsub-soilinvestigationsarethemostimportantpre-requisitesfortheproperpreparationofabridgeprojectZAnumberofinstanceshavecometothenoticeoftheMinistrywheredetailedestimatesforbridgeprojectshavebeenfurnishedwithoutensuringthesupplyofalltherequisitetechnicalinputsasoutlinedintheabovementionedguidelines.ThishasresultedinavoidablebackreferencestotheconcernedPWDsandhasthusLedtoagreatdealofdelayinthesanctionoftheprojects.3.InordertoensurethatthequalityofprojectpreparationimprovesandthetimetakenforthescrutinyofdetailedestimatesrelatingtobridgesintheRoadsWingissubstantiallyreduced,ithasbeendecidedtoadoptthemodifiedprocedureasoutlinedhereunderforthesubmissionofdetailedestimatesforbridgeworkscostingmorethanRs10lakhseach.(a)Inthefirstinstance,theStatePWDwillfurnishaTechnicalAppraisalNoteindicatingtheproposalinbrief,variousalter-nativesconsideredtoarriveatthemostsuitableonefromtheviewpointofeconomyandtechnicalfeasibility,importanttechnicalparametersetc.andconcreterecommendationsoftheStateChiefEngineer.AsuggestedformatfortheTechnicalAppraisalNoteisenclosedherewith.Thismaybesuitablymodified/elaborateddependinguponthetypeofproject.(b)TheabovementionedTechnicalAppraisalNotewillbeexaminedintheMinistryandapprovalforalltherelevanttechnicalparameterswillbeconveyedtotehStatePWDtoenablethemtopreparethedetailedcostestimateonthebasisofthelatestScheduleofRates.(c)ThedetailedprojectestimatepreparedonthebasisoftheapprovedtechnicalparameterswillthenbefurnishedtotheMinis-tryforgettingthefinancialsanction.3.Itishopedthatthemodifiedprocedureoutlinedabovewillhelpintheadoptionoftechnicallysoundandeconomicallyviablealternativesandalsocutdowndelaysinthesanctionofdetailedcostestimates.Inciden-tally,itwillalsohelptheofficersoftheRoadsWingtomakeadequateprovisionsintheBudgetEstimatesfornewworkslikelytobesanctioned.5.Itisrequestedthatsuitableinstructionsmaykindlybeissuedtoallconcernedtofollowthemodifiedpro-cedurementionedinpara3aboveforthesubmissionofdetailedestimatesrelatingtobridgeworkscostingmorethanRs10lakhseach.

1210/22.4.ConstructiontechniquesIncaseofbridgefoundationsonrock,even-seatingofwellfoundationisessential.Further,itwouldbedesirabletotakethewellcuttingedgeintorock,wherenecessarybyadoptingpneumaticsinking,ifrequired,thedepthbeingdependentineachcaseonthetype,natureandqualityoftherockystratametwith.25.Needforproper'afterconstructioninspectionsandmaintenance'2.5.1.Somestatesinthecountryhavelaiddownproceduresforregularinspectionofbridgeworksforthepur-poseoftheirpropermaintenance.However,inseveralstatesnoregularpracticeisinvoguefordetailedperiodicinspectionofbridgestructures.252.Properandtimelyinspectionofallcomponentsofbridgesincludingthefoundationsandthetrainingworksetc.isabsolutelyessentialandshouldbestrictlyenforced.SuchasystemisinvogueintheRailways.Toachievethisobjective,itissuggestedthatthefollowingproceduremaybeconsideredforadoptionbyallStatePublicWorksDepartments/executiveagencies.(i)Completeup-to-daterecordsrelatingtothebridgestructure,v i t h edesigndata,detaileddrawingcompletiondrawings,thecon-structionhistoryandfieldobservationsaftercompletionofstructureshallbeavailablewiththeofficer-in-chargeofitsmaintenance.(ii)Apartfromthenormalinspectionbyjuniordepartmentalofficer$,inspectionofthemajorbridges,shallbecarriedoutbyanofficer,notbelowtherankofanExecutiveEngineer.Suchaninspectionwouldalsobenecessaryformediumandminorbridgeswheredefectshavebeennoticedand/orseriousproblemsareapprehended.(iii)Thereshallbeatleasttwoinspectionseveryyearonepriortoandtheotherfollowingthemonsoonseason.Incaseofproblematicbridgesmorefrequentinspectionsmaybecalledfor.(iv)Theinspectionshouldcoverallfacetsofthebridgestructureincludingexaminationoftheconditionsoffoundationswhereposs-ible,scouraroundfoundations,conditionsofthesub-structure,articulations,bearings,superstructure,deckslab,wearingcourse,wheelguardsandgauardrails,allmembersofsteelandtimbertrusses,stringersandfloorbeams,paintingofsuperstructurewhereapplicable,stringsandwireropes,spursandbunds,otherprotectiveworksandapproaches.(v)Specialcareshallbetakentocheckuptherelevantlevelsofthestructuretoensurethatthebridgeisongradeasperoriginaldesignandconstructionandtherehasnotbeenanyunduesettlementoffoundation.Thetimegapbetweensuccessiveobservationsofthisnaturecouldbeincreased,iftherearenoproblemsnoticed.(vi)Wherechangesintherivercourseorlargescalescouringaremanifested,thebedcontoursmaybeplottedbytakingsoundingstostudytheeffectofanychangeinthebedconfiguratioa(vii)Achecklistshouldbeformulatedtofacilitatetheseinspectionssothatnoneoftherequireditemsneedingexaminationsislostsightof(viii)Furtheritisequallyimportanttotaketimelystepstoimplementthoroughlythesuggestionsandrecommendationsbasedontheseinspectionswellintime.

1310/2dcntiyinaccordancewiththeprovisionsoftheratecontract,tocheckmatthecementactuallyconformstotheprescribedstandards.Thecementshouldalsobestoredpropertyandtestedagainatthetimeofactualuseonworks.2.Normally,cementsmanufacturedinthecountryarecoveredbythefollowingIndianStandards:IS:ZW - bpeemesuonsforOrdinary;RapidHardeningandlowheatPortlandCementK455 - SpecificationsforPortlandblast-furnaceslagcementIS:1489 - SpecificationsforPortlandPozzolanaCement3.TheneccessarytestsforcheckingthequalityofcementarealsoindicatedintheaforesaidStandardsaswellasintheMinistryofShipping&TransportSpecificationsforRoadandBridgeWorksandIRCBridgeCodeSectionHLThesetestsmustneccessarilybecarriedoutoneachbatchofcementreceived.Thetestcubesshouldbetestedbeforethestartoftheworkforboththe7-daysand28-daysstrengthsasgivenintherelevantstandards.Incaselowstrengthsareindicated,timelyactionshouldbeundertakentoascertainthecauseofpoorqualityaswellastopreventtheuseofsuchsub-standardcementsontheworks.Ifafterconductingtheneccessaryteststhecementsarefoundtobesub-standard,themattershouldbebroughttothenoticeoftheStateCivilSuppliesDepartment,withcopiestothisMinistryandtheconcernedControllerofCementunderwhosedirectionthecementhasbeenreleased,fortakingupnecessaryremedialaction.{1310.3.|NaPL-50(8)/74-A-NHVIDatedthe9March,1978ToAllStateChiefEngineers/AddLChiefEngineersoftheStatePWDsandUnionTerritoriesdealingwithRoadsSubcUseofPortlandPozzolanaCementinHighwayBridgesTheproductionofOrdinaryPortlandCement(OPC)hasfallenshortofthedemandinthecountry.Tomeettheincreasingdemand,theMinistryofIndustryhastriedtomaximisetheproductionofcementbyfullerutilisationoftheinstalledcapacityinthecountrybyallowingtheproductionofPortlandPozzolanaCement(PPC).ThishasresultedinasizablereductionintheOPCnowavailableforuseonhighwaybridges.2.Sofar,theuseofPPCforconcreteworkinbridgeshasnotbeenpermitted.ThishasbeenbecauseofsomeapprehensionsregardingthepropertiesofconcretemadewithPPC,asalreadybroughtoutinacircularissuedbythisMinistry(CircularletterNo.RM-29(3)/75dated16.9.75).3.ThematterhasrecentlybeenagainreviewedandinordertoutilisetheexistingproductionofPortlandPozzolanaCementstrictlyconformingtoIS:1489,ithasbeendecidedtopermittheuseofsuchPPConcom-ponentsofbridgeswhereplainconcreteworkisinvolvedandwherereinforcementisnottakenintoaccountintheAwpiofthemember.However,allsuchconcreteworksshallbecarriedoutunderthestrictcontrolsubjecttothefollowing:-(a)PortlandPozzolanaCementshallonlybefactorymadeandstrictlyconformingtoIS:1489.MixingofpozzolanawithOrdinarytadandCementatsiteshallnotbepermitted.Cb)AllsuchcementsshallbetestedforascertainingthequalityofcementconformingtothestandardslaiddowninIS:1489.Inthisconnection,referenceisalsoinvitedtotherequirementsspeltoutinMinistry'sCircularletterNo.NH.VI-50(20)/77dated15.12.1977.Anycementfallingshortoftheprescribedstandardsshallnotbeusedontheworks.(c)BeforetakinganysupplyofPortlandPozzolanaCementfromanyfactory,thefollowingshouldalsobeinsistedupon:(QManufacturer'scertificatethalthecementconformstotherequirementsofIS:1489andalsostatingthetypeofpozzolanausedinthefinishedcementThedistinguishableidentificationmarksputonthecementbagswhichwouldhelpinidentifyingthesebagsfromothertypesofcementforpurposesofstoragesanduse(d)AllsuchPPCshallbestoredseparatelyfromOridinaryPortlandCementsoastoensurethatboththecementsdonotgetmixedupforuseontheworks.(e)AHconcretemadefromPortlandPozzolanacementneedlongperiodofwetcuringThisaspectwilldependuponthePozzolanicmaterialusedinthemanufactureofcementHowever,atsiteadequatewetcuringshallbeensuredforattainingthedesignstrengthoftheconcrete,whichshallbeascertainedeitherbyresortingtopre-testingorasadvisedbythemanufacturersinthisregard.(0SBncetheinitialincreaseinstrengthofconcretemadefromPortlandPozzolanaCementisslowerthanthatmadefromOrdinaryPortlandCement,itisessentialtoallowforalargerperiodofcuringbeforethecenteringandsupportingshuttersareremovedItissuggestedthatpre-testingberesortedtoascertainthisperiodofcuringinordertoensurethat75%ofthedesignconcretestrengthisachievedbeforethecenteringandsupportingshuttersareremovedHowever,t|iiscuringperiodshallnotbelessthanthatspecifiedforconcretesmadefromOrdinaryPortlandCement

1510/23.However,stillafewinstancesmayariseactuallymatingdesignassumptionsinvaliddespitetakingcon-firmatoryboringsattheexactlocationsofwellsbeforestartingwork.Asperpracticeinthepast,itisrequestedthatonlysuchproblematiccasesofwellfoundationsforwhichthedesignswereapprovedbythisMinistryandwhereconsiderabledivergenceindesignassumptionsregardingthesoil/rockpropertiesatorbelowthefoundingleveland/oraboveuptothemaximumanticipatedscourlevelarenoticedduringactualexecutionand/ordeviationsfromanyotherdesignparametersorextrafinancialliabilityareinvolved,maybereferredtothisMinistryforpriorapprovalalongwiththefollowingdata: - i)Historyofsinkingofthewell;ii)Natureofstratametwithfrombedleveltofoundationlevel;iii)Finalfiguresoftiltandshift;iv)Foundationpressureasperdesignattheproposedfoundationlevel;v)Permissiblesafebearingcapacityattheproposedfoundationlevelbasedonsoilstrataactuallymetwith;vi)Reportofadiver(oftheGovernmentandnotofthecontractor)regardingtheconditionofsteiningandrockatthefoundationlevel;andvii)Financialimplications,ifany.4.Notwithstandingtheaboveinstructions,itmaybeemphasizedthatworkshallbecarriedoutaccordingtoallrecordsasindicatedinthisMinistry'sspecifications,CL1200IRCBridgeCode(78-1983)SectionVII,(FirstRevision)forFoundationsandsubstructureandotherextantcircularsforwellfoundationsshallbemain-taineddulyforallbridges.

1620/2EneltoNHg-66[loa>/e6d».7.71900EneltoNH!»6fl(l08i/qBdt.7.7J9CSALTERNATEFORLARGESPANANDHEAVYLOADING.D-EXAMPLES1SINGLESPANBRIDGESUSMALLTOMEDIUMWIDTHSMALLSKEWLARGESKEW\\\wSHOUTROLLERBEARINOSNEOPRENESEARB4GFADSORRUBBERwrWITHTEFLON-.Va/CIRCULARCONCRETEHINGESORRUSSERnor01AMINOS.MOVABLEMARINOS(-RUBBERPOTOKAAINOSWITHTEFLONSLIDINGSURFACE.)FIXEDSCARING(RUSSIAPOTSCARING)2.CONTINUOUSBRIDGES.21SMALL-TO-MEDIUMWIDTH.12WfDEBRIDGES(WIDESLABORMULTI-BEAMBRPQES)SMALLSOWORLOADLARGESPANORLOADlULTI-LAYERNEOPRENESHORTROLLIRHAHMOORPCNOULUM.PENDULUMSII\1\!\NEOPRENEPAOSWITHANCHOR*04XBEARINGPADSPENDULUMFIXEDSCARINGCONCRCTCHINGE./LEFTRUSSERPOTSCARINGS(FIXEDSCARINGSALLOWI*'ROTATIONINANYDIRECTIONS.)NEOPRENEFADSORRUSSCRPOTtWITHTEFLONSURFACE.YSAMEASABOVE///X/v..SAMEASASOVE/\-^^TCONCREreHINGES(FIXBOSEARINGS>SAMEASRIGHTVx'>^TT/PENDULUMSrMOVEMENTANDROTATIONINANTDIRECTIONJCONTINUOUSCONCRETEHINGENHB-G6(PSVCSdt.77.igsg.-SAMEASRIOHTBEAMINGPADS/POTSEARINGSRNBPOTSEMMItWWITHTEFLONSUOlNOWAGERAILSFORMOVEMENT*Mi - n^TMlV-SR5LELlUNUWlf///t/'A///"/ - STEELFENDUUMRHARHMNOWWWTIHANYOIRSCnONKFIXEDMNMOG.tROCKOM)COLUMNSIFKNOULUMS)2.2.WIDEBRIDGES(SLABORMULTI-WiAMBRIDGES^

1620/7(E)OzoneResistanceIS:340020%Strain.96hrs.(PartXX).at40±rC,50ppkllZLNoCracksNo.YesNo.No.No.Yes(iii)Stiffnessin - Compresion(deter-minationorverticalstressstrainchrve)±20%YesYesNo.YesYesYes(iv)StiffnessinShear - (determinationofmodulesG)±20%YesYesNo.YesNo.Yes(v)MinimumUltimate - Compression60MPaNo.YesNo.YesYesYesStrengthLISTOFADDRESSESOFREGIONALDIRECTORSOFINSPECTION1.TheDirectorofInspection,AayakerBhavanAnnexe,NewMarinelines,Bombay.2.TheDirectorofInspection,1,GaneshChandraAvenue.Calcutta-13.3.TheDirectorofInspection,35,HaddowsRoad,Madras-5.4TheDirectorofInspection,NXCircle,BlockNo.13,JamnagarHouseHutment,NewDelhi-11,5.TheDeputyDirectorofInspection,4/286,Nawabganj,Kanpur.ThisapparatusisalsogoingtobeavailablewithHRSMadrassoonANNEXUREm

1710/2whereAy*crosssectionalareaofonestirrupincm2b=webwidthincmV*designshearforceinigVc-lO.b.dinkgs*longitudinalspacingofstirrupsfy - specifiedyieldorproofstrengthofreinforcementinkg/cm3(Lshallinnocaseexceed4250kg/cm2evenifhigh-strengthdefonnedbarsareused).deffectivedepthor0.80timestheoveralldepthofthesectionwhicheverismore,incm.5.MinimumwebreinforcementTheminimumpercentageofwebreinforcementshallbe0.25asspecifiedinclause15ofIROl8-1965ifitismildsteeLForhighstrengthdeformedbars,thisminimumshallbe0.14percent6.Maximumshearforcepermissible:InnocaseshallthedesignshearforceVexceedthevalueof0.1Fc.b.d.whereFcisthespecifiedcubeofstrengthofconcrete.Ifthisisexceeded,thesectionshallberedesigned.7.ConnectorReinforcement:Forflangedbeamsincludingboxgirders,adequateshearconnectionacrosstheverticaljunctionplanesbetweentension/compressionflangesandthewebshallbeprovidedbyhorizontalconnectorreinforcementTheareaofsuchreinforcementperunitlengthofbeamshallnotbelessthan50%ofthewebsteel,bothintopandbottomflanges,andforL-beamsitshallnotbelessthanwebsteel,bothintopandbottomflanges.Thespacingoftheconnectorreinforcementshallinnocasebegreaterthanthatofthemainwebreinforcement(VideFigI)Note:ReinforcementifavailableatSectionXXfromconsadesatfcmsofflexuralresistancemayalsobetakenintoaccountasconnectorsteelindependently,providedtherequirementsofanchorageandspacingaresatisfied.OnlywhenAtrequiredexceedsthetensilesteelavailable,additionalconnectorsteelistobeprovidedThetopflangeofbeamwouldthereforerequiregenerallylittleadditionalconnectorsteelfffO.TOUTTtKrt-*70t>/75MWIt575ItaIIIIII9countC7*K4*ACWHEC7CRDtrAHSTtMStOHFLANGEtesta)tFy-wH.AvA*tA09W£dSTEALAt»ARtAOFC - mECTO*97MAC.S-SPACrn*OFW£55Ti£LStSPACMGOFcAtmtcro/tSTEALJUNCTIONPIANAXX=*>"*4v9StStAS

1710/7roadbridgesarerequestedtobringthesametothenoticeoftheirfieldstaffforinformation,guidance,andstrictcompliance.SomeoftheStatesmighthavealreadyissuedmorecomprehensiveanddetailedinstructionsonthissubjectIfso,theyarerequestedtokindlyfurnishtothisMinistrycopiesofsuchinstructions,tofacili-tatethepoolingofinformationandfordisseminatingthesameamongsttheotherStates.3.Barringafewcasesofdepartmentalexecution,normallymostofthebridgeworksaregotexecutedthroughcontractors,andthedepartmentalsiteengineer,whileconfininghissupervisionstocompliancewiththeworiringdrawingsmadeavailabletohim,isgenerallypronetopaylessattentiontothemodeofexecution,theequipmentusedandtheprocedurefollowedbythecontractor,eitherduetoignoranceoratendencytoshifttheresponsibilitytothecontractorforsuccessfulcompletionofthejob,particularlyonmajorprojectshandledbybigcontractingfirms(thoughthecontractingfirmsarenodoubtfullyresponsibleforallsizesofjobs).Sometimes,thesiteengineerisblissfullyignorantofthevariousprestressingoperations,thejackpressuresandelongationsetc.,whicharelefttobetakencareofbythefirm'ssiteengineers.Ifsuchthingsgounchecked,evenmajorfirmscancommitverybigblunders,suchasconcretingaprestressedbeamwithoutvibrators,carryingoutlaunchingoperationswithoutensuringpropersafetyprecautionseta,allofwhichmayleadtoveryseriousdisasters.Thereis,therefore,anurgentneedtotrainandeducatethedepartmentalstaffproperlythroughdetailedcirculars,detailedinstructionsfurnishedonalltheworkingdrawings,andaliberalsupplyofcodesandbooksfortheirguidanceThefieldmanmustknowwhattolookforandcontrol.Properdetailingondrawingsisevenmoreimportantthandesigns.4.Whilestressingtheimportanceofcompliancewiththevariouspreviouscirculars/codes/specificationsmentionedinpara2above,afewguidelinestobefollowedforensuringsafetyintheconstructionofprestressedconcretebridgecomponentsarenowfurnishedinAnnexureIII.TheStateChiefEngineersmay,ifdesired,enhanceorelaboratethesame,beforecirculatingamongstallthedepartmentalofficials.EnclosurestoletterNo.NHIIIP/18/78dt1812.78ANNEXUREILISTOFCIRCULARSALREADYISSUEDBYTHEMINISTRYOFSHIPPINGftTRANSPORT(RoadsWing)ONSAFETYINCONSTRUCTION(1)NHV - 11(6)/73dated19.11.74"EnsuringSafetyofBridgeStructures - GuidelinesforEngineers."(2)DeletedRefertoIRC:87-1984(3)NHIII - 23(123)/72dated203.76"RegulationoftrafficonNationalHighways(i)intheeventoffloodbreachordamageduetocertainotherreasonsor(ii)whenwidening/reconstructionofanyexistingC.D.structureisinprogressorconstructionofanewstructureonanexistingsection:'*(4)PL-67(3)/77dated8.3.1977"Instructionsregardingstackingofconstructionalmaterialonbridgedecksduringconstructioa"ANNEXUREULISTOFINDIANSTANDARDSONSAFETYINCONSTRUCTIONI.IS:3696(PartI) - 1966IIS:3696(PartII) - 19663.IS:3764-19664.IS:4081-19675.IS:4130-19756.IS:4138-19677.IS:4756-19688.IS:4912-19689.IS:5121-10.IS:5916-1970II.18:7293-1974II18:7969-1975SafetycodeforScaffoldsandLadders:Part1 - ScaffoldsSafetyCodeforScaffoldsandLadders:PartII - LaddersSafetyCodeforExcavationWorkSafetyCodeforBlastingandDrillingOperationsSafetyCodeforDemolitionofBuildings(FirstRevision)SafetyCodeforWorkinginCompressedAirSafetyCodeforTunnelingWorkSafetyRequirementsforFloorsandWallOpenings:RailingandToeBoardsSafetyCodeforPilingandOtherDeepFoundationsSafetyCodeforConstructionsInvolvinguseofHotBituminousMaterialsSafetyCodeforWorkingwithConstructionMachinerySafetyCodeforStorageandHandlingofBuildingMaterialsANNEXUREIOGUIDELINESFORSAFETYINCONSTRUCTIONOFPRESTRESSEDCONCRETEBRIDGES1IntroductionTheartofprestressedconcreteconstructionisaspecialisedjob,requiringahighorderofworkmanship,qualitymaterialsandequipmentTheconstructionaloperationsinvolvesophisticatedtechniqueswhichhavearelativelyhighpotentialofhazardsiftheyarenotwellplannedandaUsafetymeasuresnotundertaken.Numerouscaseshavecometonoticewhereconstructionallapseshaveresulted

1710/13Dr.Leo&hftidfsDIO.letterdt26.8.1983addressedtoADO(B)Ihavereceivedyourletterof17thAugust,1983andunderstandyourworries.YoudescribedtypicaldeficienciesofprestressedconcretebeamsdesignedfollowingtheFrenchway,usingtendonswhichareanchoredatthesurfaceoftheroadwayslab.Wehaveabondonedthistypeofdesignmanyyearsago.Inaddition,wehavespecifiedratherstrongandabsolutelytightductsinordertopreveatanyintrusionofmortar.Wehavefurtherverystrictspecificationsforthegroutandforthegroutingprocessbecauseallthatismostimportantforthedurabilityofthebridges.*Iamsendingtoyouourlatestspecificationsforthegrout,part5ofDIN-4227.Inthecasewhichyoudescribe,itismostimportanttoremovetheblockadeofthecables.Thiscanperhapsbereachedbyrepeatedstressinganduastressing,bywhichtheblockingmortarcanbebrokenandgrindedandthenspilledoutbywaterjettingIfthisdoesnotsucceed,thenitwouldbenecessarytofindthelocationoftheblockadeatleastapproximatelybymeasuringtheelongationofthecableforaknownstressingforce.Thenoneshoulddrillholesfromtheoutsidetotheductonbothsidesoftheblockade,sothatthegroutcanbeinjectedthroughthesedrilledholes.Insuchcasesweusethevacuummethodwhichmakessurethatallvoidswillbefilled.Thedelayofthegroutingcan,ofcourse,havecausedcorrosionofthewiresintheductsandtherefore,thesewiresshouldbespeciallytreatedbeforethegroutingmaybebyHushingwithlimewhitewash,whichhasanalkalinePH-value.IhavetriedtocontactProfessorRchmofourOtto-Graf-Institut,UniversityofStuttgartwhoisourspecialistfortheseproblems.Butunfor-tunately,Icannotreachhimbeforethemiddleofnextweek.Hisadvicemaybehelpfulinthismatter.Successfulgroutingrequiresalotofspecialknowledgeandalsoofverystrictcontrol.Youmayperhapsengageoneofourspecialistsforinformingsomeofyourengineers.Mistakesingroutinghavealsobeenmadeinourcountry,andwehavefoundquiteanumberofbridgeswheretheductshadnotbeenperfectlyfilledwithgroutandtheprestressingsteelcorroded.Thiswasmainlyduetolackofdiligenceattheexecutionofthework.Personally.Isuggestmoreandmoretousethevacuummethod,forwhichthepatentsexpiredaboutayearago,sothatitisnowavailableforgeneraluse.IamsorrythatIcannothelpyouinabetterwayatthemomentAssoonasIcanreachProfessorRehm,Ishallaskhimtowritetoyouhisadvicefortheanti-corrosivetreatmentofsuchwires.D,0.LETTERNO.RW/N-3A4/2379/WDATED2NDSEPT.83FROMADDL.DIRECTORGENERAL(BRIDGES),MINIS-TRYOFSHIPPING&TRANSPORT(ROADSWING)TODR.LEONHARDT,STUTTGART(WESTGERMANY).Iacknowledgewiththanksthereceiptofyourkindletterdatedthe26thAugust,1983alongwithonecopyofthelatestGermanspecificationsforthegroutfortheductsofprestressedconcretecablesManythanksforyourpromotreply.Wehavereallybenefittedfromyouradviceintheproblem.2.1.Thecourseofactionsuggestedbyyouregardingtheremovalcfblockadeinthecableductswasthoughtofbyusalso.Practicaldif-ficultyfncarryingoutthefieldoperationsafterthebeamsarealreadylaunchedinpositionishamperingo»"rmoveinthismatter.22.Wewouldliketogettheliteratureaboutthevacuummethod,referredtoinyourletter.3.Asregardscorrosionofwiresintheductscausedbythedelayingrouting,wewouldliketohearfurtheryouresteemedviewsaftercontactingProfRehmassoonaspossible4.1.SpecificationsforthegroutcontainedinlatestDIN4227wouldbemadeuseofaftergettingtranslatedfromGcrman.42.ToobtainanaccurateEnglishtranslationofanytechnicaldocumentinGermanissomewhatdifficultinourcountry.IncaseanEnglishtranslationofthisparticularGermanSpecificationisavailable,kindlyarrangetosendacopyforourimmediateuse.5.hhasalsobeeneducativetonotethedesignwithanchoragesfortendonsatthesurfaceoftheroadwayslabbeingabandonedinyourcountrt6.Wearc,indeed,gratefultoyouforallthepainstakenforrenderingyourquickandaluableadvice.Hopetohearfromyoufurther.11710-12.NO.NHVI-50(3)/83Datedthe7thDecember,198JToTheChiefEngineersofallStatePWDsandUnionTerritoriesdealingwithNHsandotherCentrallyFinancedroads.ChiefEngineer,PambanBridgeProjectSub:WidthofeffectivecompressionflangeforprestressedcencretcgridersIntheIRCdesigncriteriaforprestrequotesdbs_dbs33.pdfusesText_39