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MesaStandardSpecificationsAmendmentstoMAGUniformStandardSpecificationsforPublicWorksConstructionENGINEERING2017EFFECTIVEDATEAugust1,2017MESASTANDARDDETAILSAVAILABLEON-LINEWWW.
MESAAZ.
GOV/ENGINEERINGAugust2017Page1of24August2017CITYOFMESAMESA,ARIZONASTANDARDSPECIFICATIONSFORPUBLICWORKSCONSTRUCTIONTheCityofMesaStandardSpecificationsforPublicWorksConstructionshallbeinaccordancewiththe2015editionoftheUniformStandardSpecificationsforPublicWorksConstructionassponsoredbytheMaricopaAssociationofGovernments(www.
mag.
maricopa.
gov),asamendedasfollows:A.
Subsection102.
12–Addanewparagraph(C),toreadasfollows:(C)Submissionofanyunitpricesinthebidproposalwhichareunbalanced,eitheraboveorbelowtheamountofareasonablebidpriceasdeterminedbytheCityEngineer,tothepotentialdetrimentofthecontractingagency.
B.
Subsection105.
4–Addthefollowingtothissection:Foranyapparenterrororomissionintheplansandspecifications,suchcorrectionsbytheEngineermayincludeadjustmentsinunits,quantitiesandunitprices.
C.
Subsection106.
2-ReplacethetextofSubsection106.
2withthefollowingtext:106.
2.
1General:TheCityofMesarequiresthatallconstructionmaterialstobesupplied,constructedorinstalledin,onoracrossanyCityofMesaeasement,right-of-wayorCity-ownedpropertybesubjecttoinspection,qualitycontrol(QC)&qualityassurance(QA)testing,andapprovalorrejectionbytheCity.
Thisrequirementalsoappliestoanymaterialsorinfrastructurethat,oncein-place,willbeowned,operatedormaintainedbytheCityofMesa,regardlessofwheretheyareinstalled.
AnymaterialrejectedbytheCityofMesashallberemovedimmediatelyandreplacedinanacceptablemannertotheCityatnoadditionalcosttotheCity.
"QualityControl(QC)Testing"istestingperformedtoassurethematerialsinstalledcomplywiththerequirementssetforthinCitystandardsandtheContractDocuments.
"QualityAssurance(QA)Testing"istestingperformedtoverifytheaccuracyandapplicabilityoftheQCtestingresultsandtoascertainthatthematerialsinstalledmeetthespecifiedlevelsofqualityinaccordancewithCitystandardsandtheContractDocuments.
ForCityofMesaprojects(wheretheCityofMesaistheContractingAgency),theGeneralContractoremployedbytheCityshallberesponsibleforperformingtheQCtestingaspartoftheContractWork.
ForprojectswheretheCityofMesaisnottheContractingAgency("non-Cityprojects"),thepersonorentityholdingtheCityofMesapermitforthework("Permittee")isresponsibleforcompletingtherequirementssetforthherein,asaconditionofthepermit.
For"non-Cityprojects",theverbiageofthissectionpresumesthatthePermitteeeitheristheGeneralContractorperformingthepermitworkorthatthePermitteewillcontractuallypasstheQCtestingresponsibilityontothePermittee'sGeneralContractor.
Hence,theword"Contractor"isusedthroughoutthissectionwhenspeakingoftheentityresponsibleforQCtestingrequirements.
Itshallbeunderstood,however,thatfor"non-Cityprojects"theseresponsibilitiesareultimatelyincumbentonthepermitholder.
RequirementsrelatedtominimumQCtesting,includingrequiredminimumtestingfrequencies,aresetforthherein.
TheCitymayalsoelecttoperformindependentQAtestingforanyprojectorpermit.
TheCitywilltypicallyperformQAtestingatafrequencyofapproximatelyoneQAsampleforeveryfourQCsamples.
However,theCitymaydeviatefromthisfrequency(eithertoincreaseordecreaseit)attheCity'sowndiscretion.
TheContractor(whethertheCity'sContractororthePermittee'sContractor)shallprovideallsupportnecessarytoperformQCandQAtestingandsampling(i.
e.
shoringfortesting,trench,backfill,backhoes,motorgraders,loaders,etc.
tofacilitatetestingandsampling)atnoadditionalcosttotheCity.
August2017Page2of24106.
2.
2QualityControlTestingProgramRequirements:TheContractorshallestablish,provide,andmaintainaneffectiveQualityControlTestingProgram(QCTP).
TheContractorshalldevelophisownprogramorprocuretheservicesofaconsultant.
Ineithercase,thepartyperformingthetestsshallbecurrentlycertifiedbytheNationalBureauofStandardsintheNationalVoluntaryLaboratoryAccreditationProgram(NVLAP)forconstructionservicesortheAASHTOAccreditationPlan(AAP)forSoils,AsphaltandConcrete.
AlltestingshallbeunderthedirectionofaProfessionalEngineerregisteredintheStateofArizona,knowledgeableinMaterialsTesting.
AlltestreportsandformsshallbestampedbytheEngineer.
Allpersonnelperformingmaterialssampling,collectionand/ortestingshallbeproficientintheirassigneddutiesandpossesscertification(s)commensuratewiththeirpositionandresponsibilities.
Theminimumcertification(s)foreachtechnicianshallbeNICETLevelII,ArizonaTechnicalTestingInstitute,AmericanConcreteInstitute,orothernationallyrecognizedprogramapplicabletotheprojectandapprovedbytheCityofMesa.
AllpersonnelperformingfieldtestingorsamplingshallcarrycopiesoftheircertificationswiththeminthefieldandshallproducethemuponrequestfromtheCityInspector.
FailuretoproduceacceptabledocumentationofpropercertificationbyeitherfieldpersonnelorthelaboratorymaybegroundsfortheCitytorejecttestingorsamplingdonebythatentity.
Priortothestartofanyconstruction,theContractorshallgivetheCityInspectorascheduleoftheproposedtestingandthenameofthelaboratorythatwillperformthework,alongwithevidenceoftherequiredcertificationsrequiredherein.
Iftheproposedschedule,laboratoryorpersonnelaredeficient,theCitywillnotifytheContractorandworkmaynotproceeduntilthedeficiencyiscorrected.
Atanypointduringtheproject,iftheCitydeterminesthattheQCactivitiesdonotcomplywiththerequirementssetforthherein,theCitymay:(1)OrdertheContractortoreplaceineffectiveorunqualifiedqualitycontrolpersonnel.
(2)OrdertheContractortostopoperationsuntilappropriatecorrectiveactionistaken.
106.
2.
3AdditionalWrittenQCTPDocumentRequiredforCityofMesaProjects:Theadditionalrequirementsofthissubsection(106.
2.
3)applyonlytoprojectswheretheCityofMesaistheContractingAgency.
Forsuchprojects,theContractorshallprepareawrittenQCTPandshallsubmitittotheCityasarequiredsubmittal.
TheContractorshallnotbeginworkuntiltheQCTPhasbeenreviewedandacceptedbytheCity.
ResumesofallpersonnelthatwillbeassociateddirectlyorindirectlywiththeQCTPshallbeincludedintheQCTP.
ThewrittenQCTPshallinclude,butnotbelimitedto,on-site/fieldandlaboratorytestingofallmaterialdeliveredtothesiteandanyexistingmaterialsorconditionspertinenttotheproject.
ThewrittenQCTPshallincludeadescriptionoftherequiredfieldandconstructionmaterialslaboratorytests,includingrequiredfrequenciesthatmeettheminimumsestablishedherein.
Theresponsibilitiesoftheengineer,projectmanager,supervisorypersonnelandeachtechnicianassignedtothisprojectshallbeincludedinthewrittenQCTP.
SubstitutionsorreplacementofpersonnelshallrequirepriorwrittenapprovalbytheCity.
106.
2.
4ReportingRequirements:TheContractorshallestablishasystemacceptabletotheCitytorecordandreportallmaterialtestresults.
Thedailytestreportsshallincludebutnotbelimitedto:1.
Testdesignation2.
Dateoftest3.
Nameoftester4.
Locationoftest/sample(stationandoffset)5.
Productsuppliersandprojectcodes(asapplicable)5.
Depth/elevationoftest/sample6.
Testresult7.
Controlrequirement(s)August2017Page3of248.
Causeofrejection(ifapplicable)9.
Resultsofretests(ifapplicable)10.
Remedialaction(ifapplicable)TheContractorshallsubmittestresultstotheCityassoonastheyareavailable(daily)byemailingthemtotheCityInspectorathis/herofficialCityemailaddressandalsoemailingthemtomat.
lab@mesaaz.
gov.
TheContractorshallalsosubmitaweeklyreporttotheCitysummarizingthetestingandconstructionactivitiescompletedbyemailingthereporttotheemailaddressesnotedabove.
AllweeklyreportsshallbesubmittedsimultaneouslytotheContractor,Permittee(ifapplicable)andCity.
Thereportshallincludeindividualsummarysheetsforeachutilityline,structureandportionofthepavementsection.
CoresshallbenumberedsequentiallythroughouttheProject.
Re-coresshallreferencetheoriginalcorebynumberandwillcontaintheaveragedvaluesforthicknessanddensity.
Totalpavementthicknessshallbereported.
Verticallocationoftestsforundergroundutilitiesshallindicatethedepthoftheexcavationatthelocationofthetest(i.
e.
,cuttoflowline[ifapplicable],depthtobottomortopofpipe,etc.
)Densitytestsshallbenumberedsequentially.
IftheminimumnumberoftestshasnotbeenperformedpertheQCTP,thisshallbestatedintheweeklysummaryreportwithanexplanationofthecircumstances.
TheCitywillmaintainacopyofthetestresultsandweeklyreportsintheCity'selectronicfiles.
Inadditiontoprovidingelectroniccopiesofmaterialstestingatintervalsascitedabove,theContractororPermitteeshallprovidetheCitywithtwobound,hardcopiesofthetestresultsshowingtheresultsofallofthetestingcompletedforthepermitorproject.
ThisshallbeprovidedtotheCitypriortotherequestforFinalInspection.
TheFinalInspectionwillnotbescheduleduntilsuchboundreporthasbeenreceivedandverifiedbytheCityInspector.
Thefollowinginformationshallbeincludedintheboundpackets:1.
Acoverlettershallbeincludedthatstatesthatitistheregistrant'sopinionthatthematerialtestinghasbeenperformedinaccordancewiththeCity'slatestminimumscheduleoftesting,thatthematerialswerefoundtobeinconformancewiththeapplicablespecifications,andthatthetestswereperformedinaccordancewiththeapplicableASTMandAASHTOprocedures.
Theletterorthereportasawholeshallbeartheregistrant'sseal.
2.
Allpagesshallbesequentiallynumberedandatableofcontentsshallbeprovided.
3.
Hardcopiesofallofthetestresultscompletedto-datefortheprojectshallbeincludedinthereport,reportingatleasttheminimumamountofinformationforeachtestassetforthinthissection.
106.
2.
5RequiredMinimumQCTestingFrequencies:Althoughminimumtestingfrequenciesarespecifiedherein,theContractorandPermittee(ifapplicable)shallbearfullresponsibilityforthequalityofthematerialsandinstallationandmayelecttoperformadditionaltestingbeyondtherequirementssetforthhereintoensurecompliance.
ThefollowingtableshallbeusedtodeterminetheminimumfrequencyandtypesofteststhatarerequiredundertheContractor'sQCTP:TestMethod(AASHTOunlessotherwisenoted)CurrentVersioninUseFrequencyAugust2017Page4of24STREETSUBGRADESieveAnalysisT3111persoiltypeMoistureDensityRelationshipT99&T2241persoiltypeIn-PlaceDensityT191(sandcone)orT310(nuke)(note8)1per250linearfeetpertrafficlaneorportionthereof(notes1&4)CURB&GUTTERSUBGRADEORSIDEWALKSUBGRADESieveAnalysisT3111persoiltypeMoistureDensityRelationshipT99&T2241persoiltypeIn-PlaceDensityT191(sandcone)orT310(nuke)(note8)1per250linearfeetorportionthereof(notes1&4)STRUCTUREFOUNDATION–SUBGRADE(ifrequired)SieveAnalysisT3111persoiltypeMoistureDensityRelationshipT99&T2241persoiltypeIn-PlaceDensityT191(sandcone)orT310(nuke)(note8)1per250squarefeet(ifrequired)(notes1&4)STRUCTURALBACKFILLSieveAnalysisT3111persoiltypeMoistureDensityRelationshipT99&T2241persoiltypeIn-PlaceDensityT191(sandcone)orT310(nuke)(note8)1per1,000cubicfeetorper2-feetofliftthickness,whicheverisgreater(notes1&4)EMBANKMENTSieveAnalysisT3111persoiltypeMoistureDensityRelationshipT99&T2241persoiltypeIn-PlaceDensityT191(sandcone)orT310(nuke)(note8)1per250linearfeetpertrafficlaneper12inchesofdepthorportionthereof(notes1&4)TRENCHBACKFILLSieveAnalysisT3111persoiltypeMoistureDensityRelationshipT99&T2241persoiltypeIn-PlaceDensityT191(sandcone)orT310(nuke)(note8)1per250linearfeetper2feetofdepthorportionthereof(notes1,3,&4)AGGREGATEBASECOURSESieveAnalysisT271persourcepereachday'sdeliveryPlasticityIndexT146,T89&T901persourcepereachday'sdeliveryMoistureDensityRelationshipT99&T2241persourceAugust2017Page5of24In-PlaceDensityT191(sandcone)orT310(nuke)(note8)1per500linearfeetpertrafficlane(notes1&4)RESIDENTIAL,ARTERIAL,&RUBBERIZEDASPHALTICCONCRETEIgnitionFurnaceBinderCalibrationT3081permixdesignperproject(note6)ARTERIALASPHALTICCONCRETEAsphaltBinderContentT3081pereachday'spavingor500tonswhicheverisgreaterPercentIn-LabAirVoids@NdesT2691pereachday'spavingor500tonswhicheverisgreaterTheoreticalMaxSpecificGravity(Rice)T2091pereachday'spavingor500tonswhicheverisgreaterGyratoryDensityT3121pereachday'spavingor500tonswhicheverisgreaterSieveAnalysisT301pereachday'spavingor500tonswhicheverisgreaterPercentIn-PlaceAirVoidsT2691per1,000linearfeetpertrafficlaneor1pereachday'spaving,whicheverisgreater(notes5&7)RESIDENTIAL&RUBBERIZEDASPHALTICCONCRETEAsphaltBinderContentT3081pereachday'spavingor500tonswhicheverisgreaterPercentIn-LabAirVoidsT2691pereachday'spavingor500tonswhicheverisgreaterTheoreticalMaxSpecificGravity(Rice)T2091pereachday'spavingor500tonswhicheverisgreaterCompactionofMarshallSpecimensT2451pereachday'spavingor500tonswhicheverisgreaterSieveAnalysisT301pereachday'spavingor500tonswhicheverisgreaterBulkSpecificGravityofMarshallSpecimensT1661pereachday'spavingor500tonswhicheverisgreaterPercentIn-PlaceAirVoidsT2691per1,000linearfeetpertrafficlaneor1pereachday'spaving,whicheverisgreater(notes5&7)PORTLANDCEMENTCONCRETESamplingofConcreteT1411per50cubicyardsorperplacement,whicheverisgreaterTemperatureofConcreteT3091per50cubicyardsorperplacement,whicheverisgreaterSlumpT1191per50cubicyardsorperplacement,whicheverisgreaterMaking&CuringConcreteSpecimensT231setof4cylindersper50cubicyardsorperplacement,whicheverisgreaterAugust2017Page6of24CompressiveStrengthofConcreteSpecimensT221setof4cylindersper50cubicyardsorperplacement,whicheverisgreaterPercentEntrainedAirContentT152,T196,orT199Whereapplicable,1per50cubicyardsorperplacement,whicheverisgreaterGROUTSampling&TestingGroutASTMC10191perday'sconstructionor5,000squarefeet,whicheverisgreaterMORTARStrengthofMoldedMasonryCylinders&CubesASTMC780ANNEXA61perday'sconstructionor5,000squarefeet,whicheverisgreaterDECOMPOSEDGRANITESieveAnalysisT271persoiltypeorsource(note2)PLAYGROUNDSANDSieveAnalysisT271persoiltypeorsource(note2)Note1:Minimumtestingfrequencyisbasedonpassingtestsonly.
Initialtestsandreteststhatindicatenoncomplianceshallnotbecounted.
Thetechnician(s)performingthetestsshallbepresentduringtheplacement,moisturizingandcompactionofthematerial.
Thetechnician(s)shallprovideawrittendescriptionofthecontractor'sactivitiesinthecompactionofthematerial(e.
g.
,depthoflift,numberofpassesofthecompactor,typeofequipmentused,howthematerialisreactingtocompaction(pumping),levelorslopedsurface,howthefillmaterialistyinginwithpreviousmaterial,etc.
).
Thedescriptionwillbeincludedinthedailyreport.
Note2:Thecertificationsforthelaboratoryandtechniciansasdiscussedabovewillbechangedasfollows:ThetestinglaboratoryforlandscapesoilmustbecertifiedbytheWesternStatesProficiencyTestingProgram.
ThepersonresponsibleforthetestingandprovidingrecommendationsmustbecertifiedasaProfessionalSoilScientistbyTheAmericanSocietyofAgronomy.
Note3:In-PlaceDensitytestingshallstartatspringlineforpipes48inchesindiameterorless.
Pipewithadiametergreaterthan48inchesshallbetestedin2-footincrementsfrombottomofpipe.
Lateralswillbetestedindependentlyofthemainline.
Note4:ThetestingfrequencystatedwillbetheminimumrequiredwhencontinuousobservationisperformedbytheContractor'sQualityControlPersonnel.
WhenQualityControlPersonneldonotdirectlyobservetheconstructionprocess,theengineerhastheoptiontostopworkand/oradjustthetestingfrequency.
Anyadjustments,whichresultinanincreaseinthetestingfrequencyand/orlosttime,shallbeatnoadditionalcosttotheCity.
Note5:Thecontractorwillprovidecompanioncoredspecimensataratioof1:4(onefortheCitytofourforthecontractor),subjecttoaminimumofonecompanioncoreforeverydayofpaving.
TheCitywillwitnessthecoringandreservestheoptiontoobtainadditionalspecimensasitdeemsnecessary.
Re-coringfordeficientthicknessorcompactionwillbeperformednolaterthantwoworkingdaysaftertheoriginalspecimensareobtained.
Allcoresaretobeconsecutivelynumberedwithoutanyduplication.
Note6:CorrectionfactorsshallbeestablishedinstrictaccordancewithAASHTOT308,Section6.
Note7:CoresshallbeobtainedaccordingtoMAG321.
14andpatchedaccordingtoMAG321.
14&MAG708.
Note8:Forin-placedensitytests,theratioofnucleardensityteststosandconetestsshallnotexceed10:1,unlessotherwiseapprovedbytheCity.
106.
2.
6FailingTestResultsandRefereeLab:ThelabperformingQCorQAtestingshallnotifytheCityInspector,theContractorandthePermittee(ifapplicable)immediatelyifthelabdeterminesthatthematerialbeingtestedisnotinconformancewiththerequiredspecifications.
TheContractororPermitteeshalltakecorrectiveactionandthematerialsshallberetestedbythesametestinglaboratorythatperformedtheteststhatindicatednoncompliance.
August2017Page7of24IftheQAtestresultsarenotinagreementwiththeQCtestresults,theContractorshallhavetheoptiontoretainathirdpartyconsultantforrefereetests.
ThethirdpartyconsultantshallmeetthesamerequirementsastheconsultantperformingtheQCtesting.
Theresultsofthethirdpartyshallbebinding.
AllcostincurredbytherefereetestingshallbetheContractor'sexpense.
IftheContractorelectsnottoretainathirdpartyforrefereetesting,theCityofMesatestresultswillprevail.
D.
Subsection107.
11–Modifythesubsectiontoaddthefollowing:UndergroundDamagePrevention:ForallprojectsthatincludeundergroundexcavationorotherworkthatcouldimpactCityutilities,Contractor/Permiteeisrequiredtocompletea90-minuteUndergroundDamagePrevention&SafetytrainingpresentationbyCity'sEnergyResourcesDepartment,priortocommencingworkandwilltakeplaceattheirofficesoranothersuitablelocation.
Contractor/Permiteepersonnelareresponsiblefortheirowntransportationtoandfromthetrainingsite.
Contractor/PermiteecancontacttheDamagePreventionOfficeat480-644-5827forassistanceandtomakereservationstoattendasession.
InformationonCity'sDamagePrevention&Safetytrainingisalsoavailableatwww.
mesaaz.
gov/energy/,under"EnergySafety/DamagePreventionandSafetyTraining.
"ThispresentationincludesbackgroundtrainingonthevariousCityutilitysystems,currentCityprogramsforlocatingandprotectingexistingutilities,areviewofhazardousconditionsspecifictoburiedutilitylinessuchasnaturalgas,electric,water,sewer,telecommunications,etc.
,andprovidesaforumforestablishinglinesofcommunicationbetweenappropriateCityandContractorstaffpriortobeginningworkontheproject.
Ataminimum,thefollowingContractor/Permiteepersonnelshallattendthispresentationandcompleteanyrequiredfollow-upactivities:JobSuperintendent,Foreman,andOperator(s)fromContractor/Permitee,thesamestafffromtheNaturalGasSubcontractor(s),andanyothermajorSubcontractorasdeterminedbyCity.
Thispresentationistobefreeofchargewithnopre-setattendancelimit.
Contractor/Permiteeisencouragedtohaveadditionalfieldpersonnelattendifpossible.
Followingcompletionofthepresentation,Contractor/PermiteeshallprovidealettercertifyingcompliancewiththisSectiontoCity'sEngineeringInspector.
TobeacceptedbyCity,ContractorCertificationLettermustincludethedate(s)andtime(s)ofpresentation,andthenamesoffieldpersonnelwhoattendedandmustspecificallyreferencetheProjectNameandCityProjectNumberorPermitNumber,asapplicable.
NothinginthisSectionorCity'sUndergroundDamagePrevention&SafetytrainingpresentationshallbeconstruedasreplacingorsupersedingOSHARegulations,ArizonaStateLaw,andCity'sestablishedpolicyforContractConstructionSafety,orotherapplicableregulations.
Contractor/Permiteeshallmaintainandhavesoleresponsibilityforsafetyonthejobsite.
E.
Subsection108.
1–Addthefollowingsubsection:(C)StartofWorkWorkshallnotstartuntilthecontracthasbeenexecutedbyboththecontractorandtheCity.
F.
Subsection109.
7(A)–Replacethetextofthefirstparagraphoftheexistingsubsectionwiththefollowing:ContractorsareadvisedthattheCitywillmakemonthlyprogresspaymentsduringthecourseofthecontractbasedontheContractor'sApplicationandCertificateofPaymenttogetherwithadetailedestimateofworkcompleted,whichshallbeintheformoftheAmericanInstituteofArchitect's(AIA's)formsG702andG703orCityofMesaApplicationforPaymentform.
Thedetailedestimateofworkcompletedshallincludeallitemsfromthebidscheduleand/orscheduleofvaluesasapplicable,andshallincludevaluesforworkcompletedprevioustoapplication,currentworkcompleted,previouslystoredmaterials,newstoredmaterials,valueofworkcompleted,retention,valueofworkcompletedlessretention,andamountduethisrequest.
ThemonthlypaymentcyclewillstartwiththedateoftheNoticetoProceed.
TheCitymayprocesspaymentsmorefrequentlyifrequestedbytheContractorandagreedtobytheCity.
August2017Page8of24Thepaymentprocessfunctionsasfollows:priortothemonthlypaymentcycledate,theContractorandtheCity'sConstructionInspectorshalltogetherpreparealistofagreeduponquantitiesforeachitemofworkcompletedandacceptedduringtheprogresspaymentperiod.
TheContractorshallthensubmittheApplicationandCertificateofPaymentandaninvoicewiththedetailedestimateofworkcompletedbasedonthelistofagreeduponquantitiestotheCity'sInspectorforsignature.
TheinvoiceshallreflecttheContractor'scompanyname,billinginformation,CityofMesaprojectnumber,ProjectManagerinformationandthetotalamountdueattimeofbilling.
Uponreceiptofthesedocuments,theInspectorwillobtainthenecessaryapprovalsandforwardtheApplicationtotheappropriateCitystaffforpaymentprocessing.
Theprogresspaymentwillbeprocessedforpaymentwithinfourteen(14)days(exceptfinalpayments)aftertheApplicationforPaymenthasbeencertifiedandapprovedbytheEngineerinaccordancewithA.
R.
S.
§34-221.
Forthepurposeofdefinition,theCity'sConstructionInspectorsarethe"owner'sdesignatedrecipients"ofallpayrequests.
IftheContractorhasanyquestionsaboutthepaymentprocess,pleasecalltheCity'sEngineeringContractAdministration.
Contactinformationwillbeprovidedatthepre-constructionmeeting.
AllotherquestionsshallbedirectedtotheCityInspectorassignedtothecontract.
Whenthecontractnearscompletionandthecontractproceedsapproachthelimitoffundsapproved,theCityofMesashallpayuptotheaggregateamountapprovedbyinitialawardandasrevisedbyexecutedchangeorders,lessappropriateretention,ifapplicable.
Whenthefinaladjusting/balancingchangeorderiswrittenandapproved,thebalanceofcontractproceeds,ifany,willbereleasedtotheContractor.
ThisprocedureisinnowayintendedtodelayorreducetheContractor'srighttofinalpayment,assetforthinA.
R.
S.
§34-221.
Note:Theremainingparagraphsoftheexistingsubsectionshallremainaswritten.
G.
Subsection109.
8–Addanewsubsection109.
8.
4,toreadasfollows:109.
8.
4DelaysandDamagesPolicy:TheContractorisadvisedthattheCityofMesahasestablishedawrittenPolicyStatementforCalculatingDelaysandDamages.
ThelatestrevisionofthisPolicy,datedMay19,2006,isherewithincorporatedbyreferenceandmadeaparthereof.
CopiesofthePolicyStatementmaybeobtainedonthefollowingCityofMesaweblink:http://mesaaz.
gov/home/showdocumentid=13974(Appendix2)Ifprogressintheworkcoveredbythecontractisdelayed,theprovisionsofthePolicyStatementshallcomeintoeffect.
NeitherthissectionnorthePolicyStatementshallbeconstruedtovoidanyprovisionsofthiscontractwhichrequirenoticeofdelays;providesforarbitrationorotherproceduresforsettlement,orprovidesforliquidateddamages.
H.
Subsection301.
3–ReviseSubparagraph(B)compactionrequirementstoreadasfollowsandaddgeneralnotetoallcompactionrequirements:(B)Detachedsidewalksnotsubjecttovehiculartraffic…………….
90PercentAllcompactionaboveshallbeperformedwithin2percentoftheoptimummoisturecontent.
I.
Subsection306.
1–Addthefollowingtexttotheendofthissubsection:UnlessotherwiseapprovedinwritinginadvancebytheCityEngineer,geogridreinforcementofthesubgradeshallnotbeusedtoreduce(orjustifyareductionin)thepavementoraggregatebasecoursethicknessorcross-section.
J.
Subsection310.
3–Revisesubparagraph(C)toreflect90%K.
Subsection310.
4–RevisetheCorrectiveMeasuresinTable310-1,TypeIVandTypeVtoaddthefollowing:August2017Page9of24NOTE:AlllimetreatedABCshallhaveplasticityindexofNon-Plastic(NP)perCityofMesaPolicyforTestingofLime-ModifiedAggregateBasetoDeterminePlasticityIndex,latestversion(availableathttp://mesaaz.
gov/business/engineering/policies-forms.
)L.
Section321–RemoveanyreferencestoWarmMixAsphalt(WMA)Technologies.
M.
Subsection321.
1–Addthefollowingtothesubsection:Allworkshallbeinaccordancewiththeprojectspecifications,asshownontheapprovedplansorasdirectedinwritingbytheEngineer.
N.
Subsection321.
4–RemoveanyreferencetoCSS-1h.
O.
Subsection321.
5–Deletethe1stparagraphandsubstitutethefollowing:ThemixdesignshallbeinaccordancewiththecurrentEastValleyAsphaltCommitteecriteriaandbeincludedonthecurrentapprovedasphaltmixeslist.
P.
Subsection321.
5–Deletethe3rdparagraphandsubstitutethefollowing:Ifthecontractorelectstochangeitssourceofmaterial,thecontractorshallfurnishtheEngineerwithanewmixdesignthatisinaccordancetheEastValleyAsphaltCommitteecriteriaandisincludedonthecurrentapprovedasphaltmixeslist.
Q.
Subsection321.
8.
4–Modifythesubsectiontoaddthefollowing:Coldrollingofasphaltpavement(definedascompactingthepavementwhenitstemperaturehasdroppedbelow185degreesFahrenheit)isprohibited.
R.
Subsection321.
8.
6–Deletethe2ndparagraphandsubstitutethefollowing:AsphaltconcretemixaggregategradationandpercentageofasphaltbindershallbeinaccordancewithSection710andtheEastValleyAsphaltCommitteecriteria.
S.
Subsection321.
10.
2–Deletereferenceto"fandryingperAASHTOT209Section15".
T.
Subsection321.
10.
2–Addthefollowingtoparagraph5afterTABLE321-4:Theminimumlimitsofcorrectiveactionshallincludetheaffectedareabutnolessthanonecityblockor660feet.
TheContractorshallremoveanyareasofbleeding,butinnocaselessthanthespecifiedrollerwidth,asdirectedbytheEngineer,andreplacetheaffectedmaterialwithnewmaterialmeetingthespecificationrequirementsforthemixtypeinvolved.
Thisshallbedone,anytimewithintheone(1)yearwarrantyuntilthebleedinghasbeencorrected,atnoadditionalcosttotheCity.
Shouldthestabilityofthemixbeaffectedbytheexcessasphaltcementtosuchanextentthatthepavementisdisplacedundernormaltrafficload,withintheone(1)yearwarranty;theareasaffectedshallberemovedandreplacedwithnewmaterial,atnoadditionalcosttotheCity.
Thecriteriafordeterminingstabilityofthemixshallbe3/8-inchmovementormoreoftheasphalt(ruttingorshoving)measuredwitha10-footstraightedgeinanydirection.
U.
Subsection321.
10.
4–AddthefollowingafterTABLE321-6:Asphaltpavementthicknessdeficiencygreaterthan0.
50inchesshallrequirean8-footedgemillandtheplacementofaminimumof1.
5-inchofadditionalasphaltoverlayatnocosttotheOwner.
V.
Subsection321.
10.
6–Deletethissectioninitsentirety.
August2017Page10of24W.
Subsection321.
10.
11–Deletethissectioninitsentirety.
X.
Subsection340.
3.
9–Modifythesubsectiontoaddthefollowing:Verticaldisplacementacrossjointsshallnotexceed1/8inch.
Y.
Subsection340.
3.
10–Addthefollowingimmediatelyafterthefirstparagraph:Concreteworkisconsidereddeficientifanyofthefollowingconditionsexist:A.
Misalignment,heavingorsettlementthatresultsinadiscontinuityinexcessof1/8-inchover5feet.
B.
Visiblecracks,notcontainedwithincontroljointsthathaveopenedto1/32-inchormore.
C.
Crazing,spallingorscalingoftheconcretesurface.
D.
Gougesthatexposeaggregate.
E.
GraffitiF.
Imprintsand/ordepressionscausingpondingoraninconsistencyinthespecifiedfinishoftheconcrete.
G.
Brokenorchippededges.
H.
Structuralcracking,durabilitycracking,oralkali-silicareaction(ASR)crackingI.
Visiblecrackinginconcreteusedforarchitecturalfinishesandthatnegativelyimpactstheaesthetics,asdeterminedbytheEngineer.
Z.
Subsection340.
3.
10–Replacethesecondparagraphwiththefollowing:ConcreteworkthatdoesnotcomplywithtolerancerequirementsofthissectionandSection340.
3.
9shallberemovedandreplacedtothenearestjoint.
Removeandreplaceguttersthatexceedthepondingtolerance.
Concreteworkthatexhibitsthesedeficiencies(exceptgraffiti)withintheone(1)yearwarrantyperiodshallalsobesubjecttoremovalandreplacement,tothenearestjoint,atnocosttotheowner.
Grindingisnotallowedinlieuofreplacement.
AnyuseofgrindingtocorrectminordeficienciesshallbesubmittedandapprovedbytheEngineerpriortouse.
AA.
Subsection401.
3–Addanewsentencetoreadasfollows:Contractorshalluseoff-dutyCityofMesapoliceofficersasrequiredbytheCityofMesaTrafficBarricadeManualforworkwithintheCitylimits.
BB.
Section405.
4–Addthefollowing:ChainswillberequiredbetweentheframeandcoveronallsurveymonumentsasshowninM.
A.
G.
Detail120-1.
CC.
Subsection601.
4.
2–Attheendofparagraph2,addanewsentencetoreadasfollows:RCM,RAP,andcementorlimetreatedbaseshallnotbeused.
DD.
Subsection601.
4.
3–Deletepenultimateparagraphandreplacewiththefollowing:Wheremechanicalcompactionisused,backfillshallbeplacedinliftstheheightofwhichshallnotexceedthatwhichcanbeeffectivelycompacteddependingonthetypeofmaterial,typeofequipmentandmethodsused,andundernocircumstancesshallexceed2-feet.
RCM,RAP,andcementorlimetreatedbaseshallnotbeused.
EE.
Subsection601.
4.
4–Attheendofparagraph2,addanewsentencetoreadasfollows:RCM,RAP,andcementorlimetreatedbaseshallnotbeused.
August2017Page11of24FF.
Subsection601.
4.
5–Revisethefirstsentenceofthethirdparagraphofthissubsectiontoreadasfollows:FloodingisnotacceptableasawaterconsolidationmethodunlessitisclearlyspecifiedinthePlansorSpecialProvisions.
WatersettlingisnotallowablewithinCountyrights-of-way.
DeletethelastparagraphofthisSubsectionandaddthefollowing:Drophammerequipmentsimilartothatusedforbreakingpavementordrivingpilesshallnotbeusedforcompactingbackfillatanystageofthebackfilloperations.
GG.
Subsection601.
6.
5–Addthefollowingnewparagraph:CLSM:WhereControlledLowStrengthMaterial(CLSM)backfillisspecifiedonthedrawings,noadditionalcompensationshallbegiven.
CLSMbackfillshallbeincludedintheunitpriceperlinearfoot.
Noslurryshallcomeintocontactwithanymetalsurface,services,airreleases,etc.
Themetalshallbeinsulatedwithalayerofnativematerialprovidedthatnativematerialisacceptable.
HH.
Section610–DeleteallreferencestoPVCwaterpipe.
II.
Subsection610.
4.
2–Replacethefirstsentencewith:Pipejointdeflectionshallbelimitedtothree(3)degreesor67percentofthemanufacturer'srecommendedmaximumallowabledeflection,whicheverisless.
JJ.
Subsection610.
4.
2–Addthefollowingparagraphsafterthefirstsentenceofthissection:ThepipeshallbelaidaccuratelytothealignmentsandgradesshownontheplansorestablishedbytheEngineer.
Alladjustmenttolinesandgradeshallbemadebyscrapingawayorfillinginunderthebarrelofthepipe.
Hammeringonthepipe,droppingthepipe,orshimmingunderthepipewithrocks,blocks,orforeignmaterialtobringthepipetogradewillnotbepermitted.
Thepipeshallbehandledandloweredintothetrenchbymeansofbeltslings.
Thenumberandsizeofslingsshallbeadequatetopreventdamagetothepipe.
Thepipeshallbeassembledandjoinedinaccordancewiththemanufacturer'sinstructionsforthetypeofjointused.
Allportionsofthejointsshallbethoroughlycleanedbeforethesectionsofpipeareputtogether.
Thepositionoftherubbergasketshallbecheckedwithafeelergageateachjointpriortolayingthenextsection.
KK.
Section610.
4.
4–Addthefollowingparagraphafterthefirstparagraph:Priortoplacingeachpipesection,theinteriorshallbecleanedofallforeignmatter.
Cleaningshallbeaccomplishedbybrushing,blowingwithcompressedair,washingwithwater,orbyanycombinationofthesemethodsnecessarytoremoveallforeignmatter.
Thepipeshallbelaidwithauniformbearingunderthefulllengthofthebarrel.
Normally,thepipeshallbelaidwiththebellendpointedinthedirectionofinstallation.
Ongradesexceeding10percent,thepipeshallbelaiduphill.
LL.
Subsection610.
6.
1–Addthefollowingsentence:AllductileironpipeshallbepolyethylenewrappedunlessapprovedotherwisebytheCity.
MM.
Subsection610.
6.
2–Deleteallreferencestonaturallypigmentedmaterial.
NN.
Subsection610.
7–Addthefollowingparagraphtotheendofthissection:August2017Page12of24Waterlineairreleaseandvacuumvalvesshallnotbeconstructedindriveways,sidewalks,pathways,washesorretention/detentionareasunlessapprovedinwritingbytheCity.
OO.
Subsection610.
9–Addthefollowingparagraphstotheendofthissection:Firehydrantsshallnotbeconstructedindriveways,sidewalks,pathways,washesorretention/detentionareasunlessapprovedinwritingbytheCity.
Minimumdistanceallowablebetweenthecenterlineofthelowestnozzleandgroundlineis18inches.
TheapprovedlistoffirehydrantsthatareallowedbytheCityofMesaisavailableon-lineathttp://www.
mesaaz.
gov/home/showdocumentid=3258.
Noexceptionsareallowed.
PP.
Subsection610.
10–Addthefollowingparagraphtotheendofthissection:FittingscutintoACPwithinsixfeetofanotherfittingorjointwillrequiretheshortsectionofpipetoberemovedandreplacedwithductileironpipe.
QQ.
Subsection610.
13–Addthefollowingparagraph:Watermetersshallnotbeconstructedindrivewayssidewalks,washesorretention/detentionareasunlessapprovedbytheCity.
RR.
Subsection610.
10–Revisesubparagraph(A)asfollows:IncludeductileironperASTMA536asanacceptablesleevematerial.
SS.
Subsection610.
10–Revisesubparagraph(B)(1)asfollows:RemovecadmiumplatingperASTMB766asacoatingoption.
TT.
Subsection610.
10–Revisesubparagraph(B)(1)toadd:Boltsandnutsforwatertransmission,waterproduction,andwatersupplyfacilitiesshallbeperWaterResourcesApprovedProductsList.
UU.
Subsection610.
10–Addthefollowingsubsection:(F)Electricalisolationintheformofeitherflexibleorrigidinsulatingfittings,asspecifiedherein,shallbeprovidedasrequiredtoobtainelectricalisolationatflangesofmainlinevalves,flangesattie-ins,andflangesforairrelease/airvacuumvalveconnections.
Rigidinsulatingfittingsshallbeflangeswithdielectricinsulatingflangekitscontainingfullfaceinsulatinggaskets,fulllengthinsulatingboltsleevesanddoublesetinsulatingwashers.
AllinsulatingmaterialsshallbeofatypedesignatedbythemanufacturerassuitableforserviceattheoperatingtemperaturesandpressurespecifiedandbecompliantwiththeWaterResourcesApprovedProductsList.
Dielectricflangeinsulatingkitsshallbeinstalledduringtheinstallationoftheflangeinwhichthekitsaretobelocated.
Rigidinsulatingfittingsbetweenthreadedsteeloutletsandcorporationstopsshallbedielectricinsulatingunions.
Dielectricinsulatingunionsshallbe250-poundtestandshallbegroundjoint,precisionmachinedandthreadedtoaccuratedimensions.
Theyshallbecomposedofmalleableironcastingswithmoldednyloninsulation.
Thenyloninsulationshallbeofanon-brittletypecapableofsevershockloadsandimpactwithoutfracturing.
Itshallbechemicallyunaffectedbyspecifiedprojectsattemperaturesto120degreesF.
Thenyloninsulatorshallhaveexcellentdielectricproperties.
August2017Page13of24VV.
Addthefollowingnewsubsection:610.
17CorrosionMonitoringTestStations:TheContractorshallfurnishallmaterialsandperformallworkforinstallingacorrosionmonitoringsystemforallburiedConcreteCylinderPipelines.
(A)MaterialsandConstructionMethods:Twowireteststationsshallbeinstalledalongthepipelineatintervalsnottoexceed1,000feet,orasindicatedbyprojectspecificplansandspecifications.
Fourwireinsulatingteststationshallbeinstalledatallinsulatingfittingswhereshownontheplans,withtwowiresinstalledoneachsideoftheinsulatingfittings.
WiresforcorrosionmonitoringpointsshallbeminimumAWGNo.
8insulatedwithHMW/PEinsulation.
Wiresshallbesizedsuchthattheymaybeusedonanyandallofthefieldtestsspecified.
Thermiteweldconnections,asshown,specifiedordirectedbytheEngineer,shallbemadewiththermiteweldkitsspecificallydesignedbythemanufacturerforsuchapplications.
Thermiteweldsshallbeamaximum25-gramchargeorperprojectspecifications.
Whenconnectingtestleadconductorsbytheuseofthermiteweldequipmenttoconcretecylinderpipeorsteelpipe,thepipesurfaceshallbecleanedbyscraping,filing,orwirebrushingtoproduceaclean,brightsurface.
Thethermiteweldshallbeinstalledinaccordancewiththemanufacturer'sinstructionsandasindicated.
Uponcompletionofthethermiteweld,butbeforetheapplicationofthecement-mortarcoating,theContractorshallstriketheweldwithtwosharpblowsfromabrasshammer.
Resistancebetweenleadsshallbemeasuredandshallnotexceed150%ofcalculatedtheoreticalresistance.
AlldefectiveweldsshallbereplacedbytheContractor.
(B)FieldTests:(1)FieldtestsshallbeperformedbyaqualifiedtestingfirmunderthesupervisionofaNACE-certifiedcathodicprotectionspecialisttodeterminethefollowing:Pipelineelectricalconductivity.
Effectivenessofinsulatingjoints.
Meteringpointintegrity.
PresenceofstrayD/Ccurrentonthepipeline.
Initialpipetosoilpotential.
CasingIsolation.
TestingfirmqualificationsandalltestdatashallbesubmittedforapprovalbytheCity.
AlltestresultsshallbesubmittedtotheCity.
(2)Thetestingprocedureshallbeasfollows:(a)Thetestshallbeconductedbymeasuringresponseofthepipetotheapplicationofcathodicprotectiontestcurrentwithanauxiliarygroundataminimumof10feetfromthepipeline.
Thepositiveterminaloftheportabletestrectifierunitshallbeconnectedtotheauxiliaryground.
Thenegativeterminalshallbeconnectedtothepipelineatateststation.
ThetestrectifiershallbeenergizedwithA/CpowerandshallbeadjustedtoprovidesufficientD/Ccurrenttoobtainadequatepipe-to-soilpotentialshiftsalongthepipelineforperformingthetests.
Acurrentinterruptershallbeinsertedinthetestrectifiercircuitsothattherectifieristurned"OFF"and"ON"automatically.
Asetof"NATIVE"potentialsshallbeobtainedpriortotheapplicationofthetestcurrent.
(b)Measurementsofthepipe-to-soilpotentialshallbemadewiththetestcurrentturnedbothOFFandON.
Thepipe-to-soilpotentialshallbemeasuredatrepresentativelocationsAugust2017Page14of24alongthefulllengthsofthepipelinetobetested.
Inaddition,potentialmeasurementsshallbetakenacrossthedielectricinsulatingfittings.
Thepipe-to-soilpotentialsshallbemeasuredwithapotentiometer/voltmetercircuitofamulti-combinationmeterandwithrespecttoportablecoppersulfatereferenceelectrodeplacedatgrade.
Contacttothepipeforobtainingpotentialmeasurementsshallbemadeatteststationspreviouslyinstalledduringconstructionforthatpurpose.
(c)Ifthepipe-to-soilpotentialismademorepositivebyapplicationofthetestcurrent,electricaldiscontinuityofthepipelineisindicatedbetweenthatpointandthepointatwhichthetestrectifiernegativeconnectionwasmade.
(d)Ifthepipe-to-soilpotentialismademorenegativebyapplicationofthetestcurrent,electricalcontinuityofthepipelineisindicatedbetweenthatpointandthepointatwhichthetestrectifiernegativeconnectionwasmade.
Themagnitudeofnegativeshiftswillbeanalyzedtodetermineifthedegreeofelectricalcontinuityisconsistentwiththespecifiedrequirementsforjointbonding.
(e)Dielectricisolationacrossinsulatingfittingsshallbeindicatedbythepipe-to-soilbeingmorepositiveorinsignificantdifferencesinthepipe-to-soilpotentialsacrossthefittingswiththeapplicationofthetestcurrent.
(f)Multipletestset-upswillbenecessarysothatthefulllengthofthepipelineisdemonstratedtobeelectricallycontinuousanddielectricallyisolatedfromotherstructures.
WW.
Subsection610.
14–Addthefollowingparagraph:Allpipelinesshallbeleftclean.
Beforefillinganysectionofpipelinewithwater,itshallbecleanedofalldirtanddebris.
TheEngineershallinspecttheinteriorofthepipelineduringinstallation.
TheContractorshallfurnishthenecessarylightsandequipmentformakingtheinspection.
XX.
Subsection610.
16–Addthefollowingparagraph:(I)CorrosionMonitoringTestStations:Measurementandpaymentforcorrosionmonitoringteststationsshallbepereachteststationasfurnishedandinstalledpertheplans,includingallexcavation,backfill,wiring,fieldtesting,valveboxandcover,andallappurtenantwork.
YY.
Subsection611.
2–DisinfectingWaterMains–Modifythesubsectiontoadd:WatermainsshallbedisinfectedperAWWAC-651,latestedition.
IncasesofoverlaporconflictbetweenMAGSection611andAWWAC-651,AWWAC-651shalltakeprecedence.
Inaddition,addthefollowingtexttotheendofMAGSection611.
2.
12:TheContractorshallalsonotethattheCityMesaofWaterResourcesDepartmentconductswatermainsamplingforbacteriatestsfrom8:00a.
m.
to3:00p.
m.
,MondaythroughThursday,exceptholidays,andrequiresaminimumoftwobusinessdays'noticepriortosaidsampling.
TheContractorshallscheduletherequiredbacteriatestingwithinthistimeframe.
ThereshallbenoadditionalpaymentorallotmentoftimetoContractorforfailuretocoordinatethesamplinginaccordancewiththeCity'savailability(asnotedherein)toperformthesampling.
Priortopressuretestingthesystem,bacteriatestsshouldbepassedifconnectedtothesystem.
IftheContractorschedulesworksuchthatsamplingforbacteriatestsistobeconductedonFriday,SaturdayorSunday,theContractormayemploytheservicesofaprivatelaboratorytocollectthesamplesandperformtherequiredanalyticaltests.
However,priortousingaprivatelaboratory,theContractorshallsubmitthelaboratory'sinformation,credentialsandproposedtestmethodstotheCityforpriorapproval.
ThelaboratoryshallbecertifiedbytheArizonaDepartmentofHealthServices(ADHS)toperformcoliformAugust2017Page15of24bacteriaandHeterotrophicPlateCount(HPC)testsinaccordancewithAmericanWaterWorksAssociation(AWWA),StandardC651-14,DisinfectingWaterMains(Statecertified).
(RefertoADHS'swebpageforthelistofapprovedcontractorshttps://app.
azdhs.
gov/bfs/labs/elbis/drinkingwatertestinglabs/drinkingwatersearchcontentpage.
aspx).
Whenavailable,testresultsfromtheprivatelaboratoryshallbesentviaemailtotheCityInspectorandshallalsobeemailedtoWaterQualityVM@MesaAz.
gov.
SamplingandtestingperformedbytheCityisdoneatnocosttotheContractor;whereas,theContractorshallpayallcosts(withoutanypassthroughtotheCity)forsamplingandtestingbytheprivatelaboratory.
Allflushingofthesystemshouldmeetaminimumflushingvelocityof3feetpersecondinthepipetobedisinfected.
Thefollowingtableshouldbeusedtodetermineappropriatetapsforanticipatedflowratesforflushing:Table611.
2-MinimumFlushingRatePipeDiameter(inches)FlowRateforFlushing(gpm)NumberofTaps2Numberof21/2"FireHydrantOutlets11"11/2"2"41201--16260-1-18470-2-110730-321121,060--32161,880--521Witha40psipressureinthemainwiththefirehydrantflowingtoatmosphere,a21/2inchfirehydrantoutletwilldischargeapproximately1,000gpm;anda41/2inchfirehydrantoutletwilldischargeapproximately2,500gpm.
2Numberoftapsonpipebasedondischargethrough5feetofgalvanizedironpipewithone90°elbow.
*ReferencetoAWWAC651,Table3–TestingandDisinfectionfromAWWA.
ZZ.
Subsection611.
4(B)–Removeandreplacethesecondparagraphwiththefollowing:Afteracceptancebutpriortotheterminationofthewarrantyperiod,theContractorshalltestthelongtermdeflectionofthestormdrain.
Ifitisdeterminedthatthedeflectionexceeds7%oftheaverageinsidediameter,thatportionoftheinstallationshallbecorrectedbytheContractoratnocosttotheContractingAgency.
AAA.
Subsection611.
3(D)–Modifythesubsectiontoadd:TheContractorshallprovidetheEngineersewerandvideoinspectionsfromanapprovedpipelinecompany.
TheannotatedvideoinspectionrecordsshallbeprovidedinDVDformatfornewsewerpipelineandexistingsewerpipelineconnectionsatthediscretionoftheEngineer.
Thevideoshallclearlyshowallpondedwaterdepths,joints,seals,connections,connectingpipes,junctionstructuresandmanholes.
Inthecaseofnewsewerpipeline,thevideoshallshowtheentirelengthofthenewsewerpipelineinstallation.
Inthecaseofexistingsewerpipelinetowhichnewsewerconnectionsaremade,thevideoshallclearlyshoweachconnectionandshallshowadistancealongtheexistingsewerpipeofnotlessthanten(10)feetoneithersideoftheconnection.
Thevideoannotationshallincludeabookmarkandidentifyingnoteforeachmanhole,junctionstructure,andconnection.
ThisvideoshallbeprovidedtotheEngineer.
TheContractorwillnotbeallowedtoplacethefinalpavementoverthesewerlineuntiltheEngineerhasreviewedandapprovedthevideo.
Noseparatepaymentwillbemadeforthisinspection;asthecostofthevideoinspectionshallbeincludedinthecostofthepipebytheContractor.
BBB.
Subsection611.
4–Modifythesubsectiontoadd:(C)VIDEOINSPECTIONOFSTORMDRAINMAINLINES:TheContractorshallprovidetheEngineerwithanannotatedvideoinspectionrecord(inDVDformat)ofthenewmainlinestormdrainpipelineandofanyexistingstormdrainpipelinestowhichnewstormdrainconnections(e.
g.
,catchbasinlateralpipes)aremade.
Thevideoshallclearlyshowalljoints,seals,connections,connectingpipes,junctionstructuresandmanholes.
Inthecaseofnewmainlinestormdrainpipeline,thevideoshallAugust2017Page16of24showtheentirelengthofthenewmainlinestormdrainpipelineinstallation.
Inthecaseofexistingstormdrainpipelinetowhichnewstormdrainconnectionsaremade,thevideoshallclearlyshoweachconnectionandshallshowadistancealongtheexistingstormdrainpipeofnotlessthanten(10)feetoneithersideoftheconnection.
Thevideoannotationshallincludeabookmarkandidentifyingnoteforeachmanhole,junctionstructure,andconnection.
ThisvideoshallbeprovidedtotheEngineer.
TheContractorwillnotbeallowedtoplacethefinalpavementoverthestormdrainlineuntiltheEngineerhasreviewedandapprovedthevideo.
Noseparatepaymentwillbemadeforthisinspection;thecostofthevideoinspectionshallbeincludedinthecostofthepipe.
CCC.
Subsection615.
2–Modifythesubsectiontoadd:Ductileironpipeshallbeminimumpressureclass150unlessotherwisenotedandshallbeceramicepoxylinedasapprovedbytheCityEngineer.
DDD.
Section620–RemoveSection620entirelyandaddthefollowingsection:SECTION620CAST-IN-PLACECONCRETEPIPE620.
1GENERAL:Thisspecificationcoverscast-in-placenon-reinforcedconcretepipeintendedforuseasstormsewersorirrigationlines.
TheabbreviatedtitleisCIPP.
CIPPisconduitmadeofPortlandcementconcretecastmonolithicallyinaproperlypreparedtrench,usingequipmentspecificallydesignedforthispurpose.
ThetypeofequipmenttobeusedbytheContractormustbeapprovedbytheEngineerandtheContractormayberequiredtofurnishevidenceofthesuccessfuluseofthisequipmentonpriorwork.
CIPPwillbeplacedonly:(A)Byexperiencedoperators.
TheEngineerwillbethesolejudgeastoexperiencelevel.
(B)InthepresenceoftheEngineerorRepresentative.
(C)Ingroundcapableofstandingunsupportedfromthebottomofthetrenchtothetopofthepipewithoutsloughing.
(D)InfillwhenitcanbedemonstratedtothesatisfactionoftheEngineerthatthefillwilladequatelysupportthepipe.
(E)Whenallowedasanallowablestormsewerpipematerial,thisdesignationisnowarranty,expressedorimplied,thatconditionswillbesuitablefortheuseofCIPP.
Anycostsincurredand/ortimerequiredtoprovidesuitableconditionsortosubstituteanalternatepipeacceptabletotheEngineer,inwholeorpart,shallbetheresponsibilityoftheContractor.
Inaddition,theContractoratnoadditionalcosttotheCity,shallprovidethefollowing:ASoilsReportthatconfirmsthatsoilconditionsareadequateforCIPPinstallation;EngineeringAnalysisthatindicatesthehydraulicgradelineforthedesigneventsiskeptwithintheCIPPinstallation.
TheCityEngineermustgrantspecificapprovalfortheinstallationofCIPP.
620.
2MATERIALS:620.
2.
1CementshallbeASTMC-150,TypeII,lowalkaliasperSection725.
620.
2.
2SandaggregateusedforconcreteandmortarshallconformtoSection701.
Maximumsizeoftheaggregateshallnotbegreaterthan1/3oftheminimumwallthicknessuptoandincludingawallthicknessof4-1/2inches.
Themaximumaggregatesizeis1-1/2inches.
620.
2.
3WaterusedforconcreteandforcuringthepipeshallbeasperSection725.
August2017Page17of24620.
2.
4ConcreteshallbeClassAinaccordancewithSection725.
SlumpshallbetheminimumrequiredforsatisfactoryplacementoftheconcretebytheequipmentusedbytheContractor.
Theslumpshallnotexceed3inches.
620.
2.
5Bondingmortarshallconsistoftwo(2)ormorepartsofcementtothree(3)partsofsandbyvolume.
620.
3CONSTRUCTIONMETHODS:620.
3.
1Excavation:Thetrenchshallbeneatlyexcavatedwithverticalsidesandsemi-circularbottom.
Thetrenchshallbeshapedtoformthebottomoutsideofthepipeonthealignmentandtothegradesspecifiedintheplans.
Departurefromandreturntotheestablishedgradeforthefinishedtrenchandtheinvertoftheinstalledpipeshallnotexceed1inchper10linearfeetwithamaximumallowabledepartureof0.
10feet.
Departurefromandreturntospecifiedalignmentforthetrenchandpipeshallnotexceedtheallowabletolerancesspecifiedforthegrade.
Thebottomofthetrench,hereinafterknownasthetrenchform,shallbeshapedtoprovidefull,form,anduniformsupportbyundisturbedearthorcompactedfillforatleastthebottom210degreesofthepipe.
Densityofthefillshallbeatleastfivepercent(5%)greaterthanthenaturalin-placesoil,butinnocaselessthan90percent(90%)whentestedinaccordancewithAASHTOT-99,MethodAandT-191orASTMD-2922andD-3017.
Innocaseshallpipebeinstalledinrocky,fracturedorfragmentedstrataorifthesoilconsistsoflargecobblestonesorboulders.
TheContractormaysubstituterubbergasketreinforcedconcretepipeforCIPPintheseunsuitableareas.
Therewillbenoadditionalpaymentforthissubstitution.
Innocasewillexpansivesoilsbeusedforbackfill.
Excavatedtrenchshallbecheckedforcompliancewithrequirementsforgradeandalignmentpriortoplacementofconcrete.
TheContractorshallsubmithisproposedmethodofgradeandalignmentcontrolandcheckingofsameforconformancewithspecificationstotheEngineerforhisapprovalpriortostartofwork.
TheContractorshallsupplymanpower,equipmentandmaterials,asarerequired,toprovideandconfirmcompliancewithgradeandalignmentrequirements.
Thisisanon-payitemandallcostsincurredshallbeincludedinthebiditem(s)forthepipeinstallation.
620.
3.
2Placement:Atthetimeofconcreteplacement,allsoilinthetrenchshallbeadequatelymoistenedsothatwaterisnotdrawnfromthefreshlyplacedconcrete.
However,thetrenchformshallbecompletelyfreeofwater,mud,anddebris.
Allformingdevices,includingtheslipformsandhopperoftheplacementdevice,shallbethoroughlymoistened.
Concreteshallnotbeplacedwhentemperatureoftheconcreteexceeds90degreesFahrenheitorislessthan50degreesFahrenheit.
Thesoiladjacenttothetrenchshallbeatatemperatureabovefreezing.
Thepipeshallbeconstructedinoneplacement,theentirecross-sectionbeingplacedmonolithically.
Insideformsshallbesufficientlyrigidtowithstandconsolidationofthefreshconcrete.
Placementshallbesuchastoproduceathoroughlyconsolidatedhomogeneousconcretemixtureconformingtothetestrequirementsofthisspecification.
Effectiveconsolidationmeansshallbeappliedtothefreshconcreteovertheentirecircumferenceandfromwithinthepipeshell.
Consolidationmeansshallbecapableofeffectivelyplacingandconsolidatingfreshconcreteatproductionspeeds.
Methodsofconsolidatingshallbecapableofbuildingupsufficientpressuretoeffectivelybondtheconcretetothesurroundingearthandtokeeploosesand,mud,andwateroutofthepipeshell.
UndernocircumstanceswilltheContractorbeallowedtocontinuethepipeinstallationifthevibratorsofthecast-in-placemachineareinoperable.
Portablevibratorsor"stingers"shallonlybeusedtosupplementinternalvibratorsonthemachineandnotasasolesourcetoconsolidateanddistributetheconcretemix.
TheContractorshallmakeprovisionsforremovingsloughedmaterial,debrisandanyforeignobjectsfromtrenchbeforeandduringplacementofconcretesuchthatbuildupofmaterialdoesnotoccuraheadofthemachine.
Inaddition,smalltransversetrenchesshallbedugacrosstrenchbottom,atdistancesnottoexceed25linearfeet,toreceivesoilbuiltupandpushedaheadoftheslipform.
(A)ConstructionJoints:Whenpipeplacementstopsinexcessofsixty(60)minutes,aconstructionjointshallbeformed.
TheendsofthepipethataretobebuttcontactshallbeleftinroughconditionwithAugust2017Page18of24aslopebetween20and45degrees.
Number4reinforcingbarsshallbeembedded12inchesinthepreviouspourand12inchesintothenextpourandshallbeplaced12inchesoncenterforpipe42inchesindiameterorlessandshallbeplaced18inchesoncenterforpipediametersinexcessof42inches.
Immediatelybeforeresumingconcreteplacementthesurfacetobebondedshallbecleanedofalllaitance,coatings,foreignmaterials,andlooseordefectiveconcretethoroughlywettedandcoatedwithalayerofbondingmortar(Section620.
2.
5)approximately1/4inchthick.
Inlieuofthebondingmortar,neatcementpastemaybethoroughlyscrubbedontothewetsurfaceofthepreviouslyplacedconcrete.
Forajointthatmaybeusedforconnectionstoanotherpipeorstructure,ajointshallbemadebysquaringofftheendofthepipe.
Anexcavationshallbemadealongthesidesandbottomofthecast-in-placepipe,foranydiameter,topermitcastingofaconcretecollarasdescribedabove.
(B)PipeDimensionsandTolerances:Theinternaldiameterofthepipeatanypointshallnotbelessthan95%ofthenominaldiameter,andtheaverageofanyfour(4)measurementsoftheinternaldiametermadeat45degreeintervalsshallnotbelessthanthenominaldiameter.
Pipelessthan15-inchesinsidediametershallnotbeallowed.
Forpipewithaninsidediameterof15-inchesto24-inchestheminimumwallthicknessshallbe2-1/2inches.
Forpipeexceeding24-inchesinsidediametertheminimumwallthicknessshallbe1/12oftheinsidediameter,plus1-inch.
Offsetsatformlapsandhorizontaledgesshallnotexceed-inchforpipehavinginsidediameternotgreaterthan42-inches;-inchforpipehavinginsidediametergreaterthan42-inches,butnotgreaterthan72-inches;and1-inchforpipehavinginsidediametergreaterthan72-inches.
(C)PipesPlacement:Itisessentialthatconcreteplacementbedoneinasmoothandsteadymannerwithasfewstartsandstopsasispossible.
TheContractorshallschedulematerialsandoperatethepipemachineatspeedsandinamannerthatwillachievethis.
TheContractorshallprovideananchoringsystemforpullofthemachineinamannerwhichwillprovidetheleastprobabilityofcausingdeviationsingradeand/oralignment.
AdjustmentstoormodificationsinanchoringsystemwhenrequiredintheopinionoftheEngineershallbemadeatnoadditionalcosttotheproject.
620.
3.
3CuringandBackfilling:TheContractorshallberesponsibleforpropercuringoftheconcreteandbackfillingthetrenchtoanevengrade.
Finalbackfillandcompactionshallnotbestarteduntilconcretehasdevelopedacompressivestrengthofatleast3000psi.
Thepipeshallbecheckedforgrade,alignmentandthicknesspriortobackfilling.
Curingshallbeperformedinsuchamannerastopreventtheprematuredryingoftheconcrete.
TheContractorshallusethemethoddescribedbelow.
(A)PolyethylenefilmcomplyingwithASTMC-171,nominalthickness0.
0015inches,shallbeplacedontheexposedtopsurfaceofthepipeimmediatelyafterthepipeiscast.
Thefilmshallbeanchoredinplacewithloosesoiltoassurecontinuous,adequatecuring.
Ahumidatmospherewithinthepipe,asevidencedbycondensationontheinteriorsurface,shallbemaintainedforatleastseven(7)daysfollowingplacement,exceptforamaximumperiodof24hoursallowedforremovingformsandmakingrepairs.
Topreventairdraftswhichmaydrythepipeandtomaintainahumidatmosphereinsidethepipe,allopenings,ends,manholes,andconnectorpipesshallbekeptclosedorsecurelycovered,exceptwhenactualworkisinprogressontheinsideofthepipe.
Thepipelineshallbepartiallyfilledwithwaterduringthecuringperiodwhenworkisnotbeingperformedontheinsideofthepipe.
620.
3.
4Repair:Immediatelyafterremovaloftheforms,theinsideofpipelinewillbeinspectedforrequiredrepairsandconformancewithalldimensionalrequirementsincludingalignmentandgrade.
TheEngineershallbethesolejudgeastotherepairabilityofdeficiencies.
TheEngineershallrequireremovalandreplacementofthosesectionsofAugust2017Page19of24pipelinewhichtheEngineerjudgestobenon-repairableorwhichisnotwithinrequireddimensionaltolerancesincludingalignmentandgrade.
Whenconcreteplacementisdonebyamethodrequiringtheuseofmetalinnerforms,theContractorshallschedulehisworkforce,byextended,staggeredormultipleshifts,asrequired,toprovideforremovalofformswithin4to6hoursofplacementofconcreteandstartofrepairing,patchingandfinishingofpipelinetoconformwithspecificationrequirements.
Whenconcreteplacementisdonebymethodsusingpneumaticallyinflatedinnerliner,theContractorshallschedulehisworkforce,byextended,staggeredormultipleshifts,asrequired,toprovideforremovalofthepneumaticinnerlinerwithin12hoursofplacementofconcreteandstartofrepairing,patchingandfinishingofpipelinetoconformwithspecificationrequirements.
Allrockpockets,non-longitudinalcracksorindentationsshallbecleanedout,moistenedandfilledwith1:2cementgroutorapprovedepoxymaterial.
Exceptwhere,intheopinionoftheEngineer,thewidthand/orlengthofthecrackmayindicateastructuraldeficiency,repairsshallbemadeasrequiredforlongitudinalcracks.
AtthediscretionoftheEngineer,longitudinalcracksexceeding0.
01inchesinwidthand12inchesinlengthmaybecauseforrejectionandremovalandreplacementofthatportionofthepipe.
SubjecttotheapprovaloftheEngineer,cracksmayberepairedusingapressureappliedepoxycompoundcapableofprovidingstructuralcorrectiontotheareainadditiontosealingthevoid.
Alongitudinalcrackshallbedefinedasonewhichhasthegeneraldirectionofa30degreeangleorlesswiththealignmentofthepipe.
Irrespectiveofconcreteplacementmethod,allrepairs,patchesandfinishingshallbecompletedwithin24hoursofconcreteplacement.
TheContractor,priortostartofconcreteplacementonprojectshallsubmitawrittenscheduleofhisproposedworkactivitiesandworktimeschedulesfortheEngineer'sreviewandapproval.
NotimeschedulerequiringovertimebytheEngineer'sstaffisauthorizedwithoutspecificwrittenapprovaloftheEngineer.
Compliancewiththissectionisanon-payitemandanycostsincurredshallbeincludedinthebidproposalitem(s)forthepipe.
620.
3.
5Finishing:Exceptfortheformoffsets,theinteriorsurfaceofthepipeshallbeequivalenttoorbetterthanawoodfloatfinish.
Formoffsetsshallbetrimmedsoastoprovideareasonablytaperedslopefromsurfacetosurface.
Thebottomofthepipebelowthemetalformsshallbefinishedinaworkmanlikemannerandshallconformtothegeneralcircularcircumferenceofthepipewithoutsags,dipsand/orhumps.
Allextraneousconcreteshallberemovedfromtheinteriorsurface.
620.
4TESTS:Randomtestsshallbemadeofthewallthicknessatthetop,bottomandsides,approximatelyevery100feet,onadailybasisbyprobesthroughfreshconcreteorsmallholesdrilledthroughtheconcrete.
Holesshallbeproperlyandpermanentlyclosedandsealed,flushwiththeinsidesurfaceofthepipe,aftermeasurementsaremade,inaccordancewiththerequirementsofthefifthparagraphoftheMesaSupplementtoMAGSpecificationsSubsection620.
3.
4,containedherein.
TestcylindersshallbepreparedandtestedasperSection725.
Ifthecylindertestsindicatethattheconcretedoesnotmeetthespecifiedstrengthrequirements,coresshallbetakenfromthesamesectionofconcreterepresentedbythefaultytestcylinderunderthesupervisionoftheEngineer.
Theconcreteshouldbeatleast14daysoldbeforethecorespecimensaretaken.
Thediameterofthecorespecimensforthedeterminationofcompressivestrengthshouldbeatleastthree(3)timesthemaximumnominalsizeofthecoarseaggregateusedandmustbeatleasttwicethemaximumnominalsizeofcoarseaggregate.
Thelengthofthespecimen,whencapped,shouldbetwicethecorediameter.
Acorehavingamaximumheightoflessthan95percentofitsdiameterbeforecappingoraheightlessthanitsdiameteraftercappingshallnotbetested.
August2017Page20of24Ifcoresaretaken,theContractorshallpatchallcoreholesinsuchamannerthatthepatchwillbepermanent,willnotleak,andwillhaveasmoothinteriorfinishflushwiththeinteriorsurfaceofthepipe.
ProceduresandpaymentforcoringshallbeinaccordancewithapplicableportionsofSection725.
TheEngineerwillevaluatethetestresultsandhisdecisionastotherequiredcorrectiveactionshallbefinal.
620.
5MEASUREMENT:Measurementofcast-in-placeconcretepipewillbethenumberoflinearfeetofpipemeasuredhorizontallyalongthepipeaxisfromendtoendofpipe.
Atchangeindiameter,themeasurementshallbetocenterofmanholeortransition.
620.
6PAYMENT:Paymentwillbemadeatthecontractunitpricebidperlinearfoottothenearestfootforeachsizeofpipeandshallbecompensationinfullforfurnishingandinstallingthecast-in-placeconcretepipeasspecifiedincludingremovalofobstructions,excavation,backfilling,compacting,testing,andallincidentalcostsnotspecificallycoveredinotheritemsintheproposal.
EEE.
Subsection625.
3.
1–AddthefollowingtexttotheendofthisSection:Allmanholesshallhaveaminimumof6-inchesandmaximumof16-inchesofreinforcedconcreteadjustingrings.
Alljointsbetweenshaftsections,conesandadjustmentringsshallbesealedwith"RAMNEK"plasticgasket,mortar,orapprovedequal.
WhenamanholeiscalledoutintheplansorinthespecificationtobelinedwithaPVCT-locklining,allexposedconcretesurfaces,includingtheshelfandopening,shallbelined.
Whenmanholesareplacedwithinasphaltpavedareas,theringsandcoversshallbeinstalledperMAGStandardDetail422.
FFF.
Subsection630.
2–Addthefollowingtexttotheendofthissection:TheapprovedlistofgatevalvesthatareallowedbytheCityofMesaisavailableon-lineathttp://www.
mesaaz.
gov/home/showdocumentid=3258.
Noexceptionsareallowed.
GGG.
Subsection630.
3.
1–Revisethesentencethatreferstovalveslargerthan20-incheshavingflangedends,asfollows:Direct-buriedvalveslargerthan20-inchesshallbeinstalledwithmechanicaljointendsunlessotherwiseindicatedbyprojectspecificplansandspecifications.
Valveswithflangedendsmaybeinstalledwithadjacentflexiblecouplingsorotherapprovedprovisionstominimizejointrigidity.
Valvesandjointsshallberestrainedasrequired.
HHH.
Subsection630.
3.
1(C)–Deletetheentiresubsectionandreplaceitwiththefollowingtext:(C)Valve14-inchesthrough20-inches:Valvesshallbeironbodyresilient-seatedgatevalvesinaccordancewiththelatestrevisionofAWWAC-509orAWWAC-515.
ValvesdesignedinaccordancewithAWWAC-509orAWWAC-515shallbedesignedtoworkequallywellwithpressureoneithersideofthegate.
ValvesshallnotbeinstalledinthehorizontalpositionwithoutpriorwrittenapprovalbyWaterResourcesDepartment.
Withpriorapproval,valvesinstalledinthehorizontalAugust2017Page21of24positionshallbeequippedwithbronzerollers,scrapers,andtracks,andshallbedesignedforserviceinthehorizontalposition.
Bypassvalvesarerequiredontransmissionmainvalves20-inchesindiameterandlargerinaccordancewiththeCityofMesaEngineeringandDesignStandardsManual.
BypasssizeshallbeinaccordancewithTable630-1orasindicatedonthedesigndrawings.
ValvesshallnotbeplacedinvaultsunlessotherwiseapprovedinwritingbytheWaterResourcesDepartment.
III.
Subsection630.
3.
1(D)–Deletetheentiresubsectionandreplaceitwiththefollowingtext:(D)Valves24-inchesandLarger:Valvesshallberesilient-seatedgatevalvesinaccordancewiththelatestrevisionofAWWAC-509orC-515,unlessotherwiseapprovedbytheCity.
ValvesshallnotbeinstalledinthehorizontalpositionwithoutpriorwrittenapprovalbyWaterResources.
Withpriorapproval,valvesinstalledinthehorizontalpositionshallbeequippedwithbronzerollers,scrapers,andtracks,andshallbedesignedforserviceinthehorizontalposition.
Bypassvalvesarerequiredontransmissionmainvalves20-inchesindiameterandlargerinaccordancewiththeCityofMesaEngineeringandDesignStandardsManual.
BypasssizeshallbeinaccordancewithTable630-1orasindicatedonthedesigndrawings.
ValvesshallnotbeplacedinvaultsunlessotherwiseapprovedbytheCity.
JJJ.
Subsection630.
4.
2(B)–RevisethesubsectiontoremovethereferencetoJCM#415Type2ESSorapprovedequalandaddthefollowing:TappingsleevesshallbepertheWaterResourcesApprovedProductsList.
KKK.
Subsection630.
4.
2(A)(2)(a)–Deletethesubsectioninitsentirety.
LLL.
Subsection630.
5Butterflyvalves:Deleteparagraph(B)3INCHESTHROUGH12INCHES:thesectioninitsentirety.
MMM.
Section631–Deleteallreferencesto"polyethylenepipe"fromthissection.
NNN.
Subsection631.
3.
5–Revisethesubsectiontodeleteallreferencestotappedcouplingsanddirecttapsandaddthefollowing:ServicesshallbeinstalledperCityofMesaDesignStandardsandWaterResourcesApprovedProductsList.
OOO.
Subsection702.
1–Attheendofparagraph4,addanewsentencetoreadasfollows:RCMshallnotbeusedwithinpipeembedmentzones.
Attheendofparagraph5,addamewsentencetoreadasfollows:RAPshallnotbeusedwithinpipeembedmentzones.
Addanewsentencetoreadasfollows:CementorLimetreatedbaseshallnotbeusedwithinpipeembedmentzones.
PPP.
Subsection710.
1–Delete2ndsentencein1stparagraphandreplacewiththefollowingtwo(2)sentences:August2017Page22of24Mineraladmixture,mineralfillerandanti-strippingagentshallbeincludedinthemixturewhenrequiredbythemixdesignorbytheEngineer.
Allmaterialsshallbeproportionedbyweight,volumeoracombinationinacentralmixplantintheproportionsrequiredbythemixdesigntoprovideahomogeneousandworkablemass.
QQQ.
Subsection710.
1–AddthefollowingafterTABLE710-1:Unlessotherwisenoted,allhotasphaltpavementshallmeetthe"HotAsphaltMixCriteria"latestapprovedversionatthetimeofasphaltplacement,asestablishedbytheEastValleyAsphaltCommittee.
Additionally,allhotasphaltmixesprovidedshallbeapprovedinwritingbytheEastValleyAsphaltCommitteepriortoplacement.
Copiesofthe"HotAsphaltMixCriteria"areavailableontheCityofMesaEngineeringweblink:http://mesaaz.
gov/business/engineering/approve-products-equipment-natural-gas-line-contractorsRRR.
Subsection710.
2.
2–Deletelastparagraphandsubstitutethefollowing:Thenaturalsandshallnotexceed15percentforMarshallmixesandGyratorymixesbyweightofthetotalaggregateforamix.
SSS.
Subsection710.
2.
4–Addthefollowingtothissection:Whenliquidanti-strippingagentsareused,theagentshallconformtotherequirementsofAASHTOdesignationR15-89.
Theagentshallbeaddedinaccordancewiththemanufacturer'srecommendeddosagerate.
Othermineralfiller,mineraladmixture,oranti-strippingagents,shallbeapprovedbytheEngineerpriortostartofthemixdesign.
TTT.
Section718-Addthefollowingparagraph:UnlessotherwisenotedonthePlansorSpecifications,allPreservativeSealsforasphaltconcretepavementintheCityofMesashallbeTypeDincompliancewiththetestmethodsandrequirementswithinMAGSection718.
UUU.
Subsection725.
2.
1–(Pozzolonic):OnlyClassFPozzolonicmaterialwillbepermittedinPortlandcementconcrete.
VVV.
Subsection726.
1–Addthefollowingtothissubsection:Forconcretecurbs,sidewalksanddriveways,thecontractorshallusealiquidmembraneconformingtoAASHTOM-148,Type2(WhitePigmented).
WWW.
Subsection750.
1-Deletesectioninitsentirety.
XXX.
Subsection750.
3-Addthefollowingparagraph:Ductileironpipeshallbeeitherpush-onormechanicaljoint.
Lugtyperestrainingsystemswhichrelyonpenetratingintothepipewallareacceptable.
Alternatively,mechanicalrestrainingsystemsshallbeasapprovedintheCityofMesaEngineeringandDesignStandardsManual.
TheapprovedlistofMechanicalRestraintandJointSystemsthatareallowedintheCityofMesaisavailableon-lineat:http://www.
mesaaz.
gov/home/showdocumentid=3258.
Noexceptionsareallowed.
Whereflangedfittingsarecalledforontheplans,flangesshallbeintegrallycastwithpipeandshallcomplywithANSIB16.
1,Class125.
Ifthreadedflangesareused,aminimumClass53ductileironpipeisrequired.
YYY.
Subsection750.
4–Deletereferencestograyironandaddthefollowing:SeeWaterResourcesApprovedProductsListforapprovedfittingmaterials,configurations,andmanufacturers.
August2017Page23of24ZZZ.
Section752–Deletethissectioninitsentirety.
AAAA.
Section756–InadditiontothestandardrequirementsofthisSection,thefollowingrequirementsshallalsopertain:Internalbronzepartsshallbelow-zinc(notmorethansevenpercent(7%)zinc).
Thereshallbetwo(2)hosenozzles,2-inchesindiameterwithNationalStandardThreads;andone(1)steamerconnection4-inchesindiameterwithNationalStandardThreads.
TheapprovedlistoffirehydrantsthatareallowedbytheCityofMesaisavailableon-lineathttp://www.
mesaaz.
gov/home/showdocumentid=3258.
Noexceptionsareallowed.
BBBB.
Section758-Modifythesectionasfollows:DeleteallreferencestoAWWAC301,prestressedconcretepressurepipe.
CCCC.
Subsection772.
2–Modifythesubsectionasfollows:ALLposts,railsandbracesshallbeTypeA,unlessotherwisespecifiedontheplansorintheSpecialProvisions.
DDDD.
Section792–DeleteallreferencetoLignin-Based,OrganicResinandPetroleumResinDustPalliativesfromthissectionwithintheCityofMesa.
EEEE.
SPECIALNOTICEREGARDINGSTREETEXCAVATIONBACKFILLINGANDPAVEMENTREPLACEMENT:TheContractorshallberesponsibleforbackfillingandreplacingpavementinallstreetexcavationsperthelatesteditionoftheCityofMesa'sPolicyStatementforStreetTrenchBackfillingandPavementReplacement.
Copiesofthispolicystatementareavailableon-lineat:http://mesaaz.
gov/business/engineering/policies-formsSPECIALATTENTIONISCALLEDTOTHEPOLICYSTATEMENTREQUIREMENTSFORTRANSVERSETRENCHES.
BACKFILLINALLTRANSVERSETRENCHESSHALLBEONE-HALF(1/2)SACKCONTROLLEDLOWSTRENGTHMATERIALPERMAGSECTION728.
Acashbond,asstipulatedinthepolicystatement,willnotberequiredforCityofMesacontractprojects,butwillberequiredforpermitconstruction.
FFFF.
SPECIALNOTICEREGARDINGDRIVEWAYANDSIDEWALKRAMPCUTSINEXISTINGCURBANDGUTTERSECTION:TheCityofMesadoesnotallowvertical,longitudinalcutsthroughtheguttersectioninordertoinstalldrivewaysorsidewalkramps.
Inordertoaccomplishthiswork,theContractorshallemployoneofthefollowingmethods:1.
Sawcutperpendiculartotheflowlinethroughthecurbandguttersectionatthelimitsofthesectiontobereplaced,remove,andreplaceinentirety;or,2.
Sawthroughthecurbsectionwiththesawcuthavingaslopetowardsthegutter.
Atthefaceofthecurb,thesawcutshallbeflushwiththegutterandatthebackofthecurb,one(1)inchabovethegutter.
HorizontalcurbcutshalltaperfromsawcuttotopofcurbtoestablishwingsinaccordancewiththeCityofMesa'sdetailsfordrivewaysandsidewalkramps.
August2017Page24of24GGGG.
SPECIALNOTICEREGARDINGTECHNICALSPECIFICATIONSFORRUBBERIZEDASPHALTICCONCRETEPAVEMENT:Forstreetsclassifiedas"Arterial"withintheCityofMesa(listedwithinthemostcurrentCityofMesaTransportationPlan),allnewconstructionandoverlaysshallreceiveasurfaceasphaltcourseofrubberizedasphaltinaccordancewiththecurrentEastValleyAsphaltCommitteecriteria.
Streetwideningandtrenchpatchesshallmatchtheexistingarterialasphaltsurfacetype.
OtherstreetclassificationsdesignatedtoreceiverubberizedasphaltoverlayswillalsousethecurrentEastValleyAsphaltCommitteecriteria.
Thematerials,mixdesignandinstallationoftherubberizedasphaltshallcomplywithMAGSection321and710asamendedbytheCityofMesa.
HHHH.
SPECIALNOTICEREGARDINGREQUIREDDETAILEDSHOPDRAWINGSFORSPECIALTYITEMS:ThisSpecialNoticeappliestoprojectsandpermitsthatproposetousenon-standard,specialtymaterialswithinCityofMesarights-of-wayoreasementsorforinfrastructurethatwillbeowned,operatedormaintainedbytheCityofMesa.
"Specialtymaterials"aredefinedasitems,suchasspecialtystreetlightpoles,specialtystreetlightfixturesorspecialtystreetnamesigns,thatarerequestedforaestheticreasonsandwhicharenotontheCityofMesa'sApprovedProductsListsorotherwisenotfullyinaccordancewiththeCityofMesa'sStandardDetailsandSpecifications.
Forsuchitems,detailedshopdrawings,includingproductdatasheets,mustbeincludedandshowninthepermitdrawingsandmustbeapprovedbytheCityofMesa(includingapprovalbytheCityofMesadepartmentsthatown,operateormaintainsuchitems)duringtheplanreviewprocess.
Forthesubmittalofsomeitems(suchasspecialtystreetlightpoles),theCitymayalsorequiretheapplicanttosubmitdetailedstructuraldesigncalculationssealedbyaregisteredprofessionalstructuralengineerproperlylicensedtopracticeintheStateofArizona.
Cityapprovalofshopdrawingsandanyrequiredsupportingstructuralcalculationsmustbeobtainedpriortopermitissuance.
ThepermitteeshallensurethatthematerialsdeliveredandinstalledinthefieldareinfullcompliancewiththeshopdrawingsandstructuralcalculationsapprovedbytheCity.
Theshopdrawingsmustbeshowninandremainapartoftheapprovedbuildingpermitplansetthatisusedforconstruction,andshallremainintheengineer'scertifiedas-built/recorddrawingsthatthepermitteeisrequiredtosubmituponcompletionoftheproject.
Bywayofclarification:SpecialtyitemsshouldbediscussedwiththeCityduringtheplanningandzoningphasesofaprojectandshouldnot,withoutpriordiscussionornotice,beproposedinplanssubmittedforreview.
TheCitytypicallyrequiresexecutionofadevelopmentagreementwiththedeveloperduringtheprojectplanningphasetosetforththerequirementsfortheinstallationandmaintenanceofspecialtyitemsbeforesuchitemsmaybeproposedinaplansetorforaproject.
Whenspecialtyitemsaredesired,thedevelopershallallottimefortheseactivitiesintheplanningphase.
TheCityisnotunderanyobligationtoapprovenon-standardspecialtyitems.
TherequirementsofthissectiondonotapplytocapitalimprovementprojectscontractedandadministeredbytheCityofMesa(e.
g.
,wheretheCityisthecontractingagency).