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DIVISION3

CONCRETE

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15029/7.19.2016 CONCRETEFORMWORK

SECTION03100 CONCRETEFORMWORKPART1‐GENERAL1.01 WORKINCLUDED

A. Formworkforcast‐in‐placeconcrete,withshoring,bracing,andanchorage.

B. Openingsforotheraffectedwork.

C. Formaccessories.

D. Strippingforms.1.02 RELATEDWORK

A. Section03210‐ReinforcingSteel

B. Section03310‐StructuralConcrete.1.03 REFERENCES

A. ACI301‐SpecificationsforStructuralConcreteforBuildings.

B. ACI347‐RecommendedPracticeforConcreteFormwork.

C. PS1‐ConstructionandIndustrialPlywood.

D. ACI318‐BuildingCodeRequirementsforReinforcedConcrete.

E. FieldReferenceManual,ACIPublicationSP‐15.1.04 SYSTEMDESCRIPTION

Design,engineerandconstructformwork,shoring,bracingtomeetdesignandcoderequirements,sothatresultantconcreteconformstorequiredshapes,lines,dimensionsandtolerances.1.05 QUALITYASSURANCE

ConstructanderectconcreteformworkinaccordancewithACI301and347,latestrevisions.Contractorshallmaintainacopyofthesestandards,orPublicationSP‐15inthefieldatalltimes.PART2‐PRODUCTS2.01 FORMMATERIALS

A. Plywood;DouglasFirspecies;mediumdensityoverlaidonesidegrade;sound,undamagedsheetswithstraightedges.

B. Formsshallbesufficientlyrigidtopreventdisplacementorsaggingbetweensupports,andsoconstructedthattheconcretewillnotbedamagedbytheirremoval.TheContractorshallbeentirelyresponsiblefortheiradequacy.

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C. Forsurfacestobegivenrubbedfinish,theformincontactwiththeconcreteshallbemadeof

plywood,metal,metalframedplywoodfaced,orotheracceptablepanel‐typematerials,toprovidecontinuousstraight,smooth,exposedsurfaces.Furnishinlargestpracticablesizestominimizethenumberofjoints.Formsshallnotbepiecedoutbyuseofmaterialdifferentfromthoseintheadjacentformorinsuchmanneraswilldetractfromtheuniformityofthefinishedsurface.

D. Forsurfacesotherthanthosetobegivenrubbedfinishformsshallbemadeofwood,metal,orother acceptable material. Wooden forms shall be constructed of sound lumber or plywood of suitabledimensions,freefromknotholesandlooseknots.Plywoodshallbeinreasonablygood,condition.Metalformsshallbeofanacceptabletypefortheworkinvolved.2.02 FORMWORKACCESSORIES

A. Formtiestobeencasedinconcreteshallnotbemadeofthroughboltsorcommonwire,butshallbeofawellestablishedtype,somadeandinstalledastoembodythefollowingfeatures:

1. Afterremovaloftheprotrudingpartofthetie,thereshallbenometalnearerthan1‐1/2"tothefaceoftheconcrete.

2. Thatpartof thetiewhich is toberemovedshallbeat least1/2" indiameter,or if

smaller,itshallbeprovidedwithawood,metal,orplasticcone1"longplacedagainsttheinsideoftheforms.Conesshallbecarefullyremovedfromtheconcreteaftertheformshavebeenstripped.

B. FormReleaseAgent:Colorlessmaterialwhichwillnotstainconcrete,absorbmoistureorimpair

naturalbondingorcolorcharacteristicsofcoatingintendedforuseonconcrete.AcceptableproductsincludeNox‐CreteFormCoatingReleaseAgent,DebondFormCoatingbyL&MConstructionChemicalsInc.,orapprovedequal.

C. FilletsforChamferedCorners:WoodstriptypetothesizeandshapeasshownontheDrawings.

D. Nails,spikes,lagbolts,throughbolts,anchorages:Sizedasrequiredofstrengthandcharactertomaintainformworkinplacewhileplacingconcrete.PART3‐EXECUTION3.01 INSPECTION

Verifylines,levelsandmeasurementsbeforeproceedingwithformwork.3.02 PREPARATION

Earthorrockformsnotpermittedexceptatfootings.3.03 ERECTION

A. Providebracingtoensurestabilityofformwork.Strengthenformworkliabletobeoverstressedbyconstructionloads.

B. Formsforwalls,columns,orpiersshallhaveremovablepanelsatbottomforcleaning,andinspection.Formsforthinsections(suchaswallsorcolumns)ofconsiderableheightshallbearrangedwithsuitableopeningssothattheconcretecanbeplacedinamannerthatwillpreventsegregationandaccumulations

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ofhardenedconcreteontheformsorreinforcementabovethefreshconcrete,unlessspecialspoutsareusedtoplaceconcrete,andsothatconstructionjointscanbeproperlykeyedandtreated.

D. Formsforexposedsurfacesshallbebuiltwith3/4"chamferstripsattachedtoproducesmooth,straightchamfersatallsharpedgesofconcrete.

E. Before formmaterial is reused, all surfaces that are in contactwith the concrete shall bethoroughlycleaned,alldamagedplacesrepaired,andallprojectingnailswithdrawn.3.04 TOLERANCES

Table4.3.1ofACI301shallbefollowedforformingtolerancelimits.3.05 APPLICATIONOFRELEASEAGENT

Applyformreleaseagentonformworkinaccordancewithmanufacturer'sinstructions.Applypriortoplacingreinforcingsteel,anchoringdevices,andembeddeditems.3.06 INSERTS,EMBEDDEDPARTS,ANDOPENINGS

A. Provideformedopeningswhererequiredforworkembeddedinorpassingthroughconcrete.

B. Coordinatework of other sections in forming and settingopenings, slots, recesses, chases,sleeves,bolts,anchors,andotherinserts.

C. Installaccessoriesinaccordancewithmanufacturer'sinstructions,levelandplumb.Ensureitemsarenotdisturbedduringconcreteplacement.3.07 FORMREMOVAL

A. Donotremoveformsandbracinguntilconcretehassufficientstrengthtosupportitsownweight,andconstructionanddesignloadswhichmaybeimposeduponit.

B. Removeformworkprogressivelysothatnounbalancedloadsareimposedonstructure.

C. Donotdamageconcretesurfacesduringformremoval.3.08 CLEANING

A. Cleanformstoremoveforeignmatteraserectionproceeds.

B. Ensurethatwateranddebrisdraintoexteriorthroughcleanoutports.

C. Duringcoldweather,removeiceandsnowfromforms.Donotusedeicingsalts.Donotusewaterto clean out completed forms, unless formwork and construction proceed within heated enclosure. Usecompressedairtoremoveforeignmatter. ‐ENDOFSECTION‐

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15029/7.19.2016 REINFORCING

SECTION03210 REINFORCINGPART1‐GENERAL1.01 WORKINCLUDED

A. Reinforcingsteel.

B. ShopDrawings.1.02 RELATEDWORK

A. Section03100‐ConcreteFormwork.

B. Section03310‐StructuralConcrete.1.03 REFERENCES

A. ASTMA‐615‐DeformedandPlainBillet‐SteelBarsforConcreteReinforcement.

B. ACI315‐80(86)‐DetailsandDetailingofConcreteReinforcement.

C. ACI315R‐80(88)‐ManualofEngineeringandPlacingDrawingsforReinforcedConcreteStructures.

D. ASTMA‐185‐WeldedSteelWireFabricForConcreteReinforcement.

E. ACI301‐89‐SpecificationsForStructuralConcreteForBuildings.1.04 SUBMITTALS

ShopDrawings:TheContractorshallsubmitacompletesetofshopdrawingsincludingschedulesandbendingdrawingsforallreinforcementusedintheworkinaccordancewithACI315,andACI315R.ReviewofdrawingsbytheContractorandtheEngineerisrequiredbeforeshipmentcanbemade.PART2‐PRODUCTS2.01 MATERIALS

A. Theminimumyieldstrengthofthereinforcementshallbe60,000poundspersquareinch.BarreinforcementshallconformtotherequirementsofASTMA‐615.Allbarreinforcementshallbedeformed.

B. Welded wire fabric shall conform to ASTM A‐185, welded steel wire fabric for concretereinforcement.

C. Reinforcementsupportsandotheraccessoriesincontactwiththeformsformemberswhichwillbeexposedtoviewinthefinishedworkshallhaveapprovedhighdensitypolyethylenetipssothatthemetalportionshallbeatleastonequarterofaninchfromtheformorsurface.Supportsforreinforcement,whenincontactwiththegroundorstonefill,shallbeprecaststoneconcreteblocks.

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15029/7.19.2016 REINFORCING

2.02 FABRICATION

A. Reinforcementshallbebentcold.ItshallbebentaccuratelytothedimensionsandshapesshownontheplansandtowithintolerancesspecifiedintheCRSIManualofStandardPractice.

B. Reinforcementshallbeshippedwithbarsofthesamesizeandshape,fastenedsecurelywithwireandwithmetalidentificationtagsusingsizeandmark.PART3‐EXECUTION3.01 PLACINGANDFASTENING

A. Beforebeingplacedinposition,reinforcementshallbecleanedofloosemillandrustscale,dirtandothercoatingsthatwillinterferewithdevelopmentofproperbond.

B. Reinforcementshallbeaccuratelyplacedinpositionsshownonthedrawingsandfirmlyheldinplaceduringplacementandhardeningofconcretebyusingannealedwireties.Barsshallbetiedasrequiredtopreventdisplacementunderfoottrafficandduringcastingoperations,andshallbeplacedwithintolerancesallowedinSection5.6.2ofACI301.

C. Distancefromtheformsshallbemaintainedbymeansofstays,blocks,ties,hangersorotherapprovedsupports.(Seeparagraph2.01C)Iffabricreinforcementisshippedinrolls,itshallbestraightenedintoflatsheetsbeforebeingplaced.

D. Before any concrete is placed, the Engineer shall have inspected the placing of the steelreinforcementandgivenpermissiontodeposittheconcrete.Concreteplacedinviolationofthisprovisionwillberejectedandthereuponshallberemoved.

E. Unlessotherwisespecified,reinforcementshallbefurnishedinthefulllengthsindicatedontheplans.Splicingofbars,exceptwhereshownontheplans,willnotbepermittedwithouttheapprovalof theEngineer.Wheresplicesaremade,theyshallbestaggeredinsofaraspossible.

F. Wiremeshreinforcementshallbecontinuousbetweenjoints.Lapsshallbeatleastonefullmeshplus2",staggeredtoavoidcontinuouslapineitherdirectionandsecurelywiredorclippedwithstandardclips.

G. Dowelsshallbeinstalledatrightanglestoconstructionjointsandexpansionjoints.Dowelsshallbeaccuratelyalignedparalleltothefinishedsurface,andshallberigidlyheldinplaceandsupportedduringplacingoftheconcrete.Atexpansionjointsonlypolyethylenewithaminimumthicknessof14mils. ‐ENDOFSECTION‐

03251‐1

15029/7.19.2016 EXPANSIONANDCONTRACTIONJOINTS

SECTION03251 EXPANSIONANDCONTRACTIONJOINTSPART1‐GENERAL1.01 WORKINCLUDED A. Formingintegralcontractionandcontroljointsinconcrete. B. Visuallyconcealingexpansionjointsinconcrete.1.02 RELATEDWORK A. Section03100‐ConcreteFormwork. B. Section03310‐StructuralConcrete.PART2‐PRODUCTS2.01 INTEGRALJOINTMATERIAL A. WaterstopforConstructionandControlJoints:Unlessotherwiseshown,waterstopsshallbe6"wide,3/16"minimumthickness,flat‐ribbed,ordumbbellpolyvinylchloride(PVC),inaccordancewithCorpsofEngineers Specifications CRD‐C‐572, latest revision, asmanufacturedbyVinylexCorp,W.R.GraceCompany,Greenstreak,orequal.Split‐ribbedwaterstopsmaybeusedwhereappropriate. B. SelfExpandingWaterstops: 1. When approved by the Engineer, the Contractor may install self‐expanding

waterstop impregnated with sodium bentonite similar to Volclay Waterstop‐RX.Themanufacturer'srecommendedinstallationproceduresshallbefollowed.

2. SelfExpandingWaterstopsshallnotbeusedatexpansionjoints. C. Joint Filler:ANSI/ASTMD994, bituminous impregnated fiberboard; closed cellpolyethylene;self‐expanding cork; of the sizes detailed and in the locations indicated on the Drawings. Bituminousimpregnated fiberboard shall not be used to fill joints in liquid retaining structures. Where the applicationrequirescementingthejointfillerintoplace,apressuresensitiveadhesiverecommendedbythemanufacturershallbeused.2.02 SEALANTS SealantandCaulking:SpecifiedinSection07900.PART3‐EXECUTION3.01 INSTALLATION A. Locateandformexpansioncontrolandcontractionjoints.

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15029/7.19.2016 EXPANSIONANDCONTRACTIONJOINTS

B. Waterstopsshallbeprovidedatall jointswhereindicatedonthedrawings.Waterstopsshallalsobeprovidedinalljoints,verticalandhorizontal,inwatercontainmentandsubterraneanstructures.Installwaterstops continuous without displacing reinforcement. All joints between adjacent continuing andintersectingsectionsofwaterstopincludingbuttjoints,teejoints,andotherangledjointsshallbeheatfusedtoformawatertightseal.Waterstopsshallnotbelapped.Waterstopsshallbesecurelywiredinplacetomaintainproperpositionduringplacementofconcrete. C. PlaceformedconstructionjointsinslabsorwallsasdetailedontheDrawingsorasdirectedbyEngineer.Settopscreedtorequiredelevations.Securetoresistmovementofwetconcrete. D. Installjointfillersandsealantsinaccordancewithmanufacturer'sinstructions.Useprimersoftyperecommendedbyjointfillerandsealantmanufacturer. E. ApplysealantsinaccordancewithSection07900. ‐‐ENDOFSECTION‐‐

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14039/7.19.2016 STRUCTURALCONCRETE

SECTION03310 STRUCTURALCONCRETEPART1‐GENERAL1.01 WORKINCLUDED

Theworkinthissectionshallincludeallformwork,shoring,bracing,anchorage,concretereinforcementandaccessoriesforcast‐in‐placeconcrete.1.02 GENERALREQUIREMENT

AllconcreteconstructionshallconformtoallapplicablerequirementsofACI301,Specificationsfor

StructuralConcreteforBuildings,exceptasmodifiedbythesupplementalrequirementsspecifiedherein.1.03 RELATEDWORK

A. Section02200‐Earthwork

B. Section03100‐ConcreteFormwork

C. Section03210‐ReinforcingSteel1.04 REFERENCES

A. TheContractor shall obtain andhave available in the field office at all times the followingreferences:

1. SpecificationsforStructuralConcreteforBuildingACI301(latestrevision).

2. ManualofStandardPractice‐CRSI(latestrevision).

4. PlacingReinforcingBars‐CRSI(latestrevisions).

5. Building CodeRequirements for Reinforced ConcreteACI 318 andACI 350 (latestrevision).

B. Thefollowingstandardshallalsoapplytothiswork:

1. ASTMC‐143‐TestMethodforSlumpofHydraulicCementConcrete

2. ASTMC‐150‐SpecificationforPortlandCement

3. ASTMC‐33‐SpecificationforConcreteAggregates

4. ASTMC‐260‐SpecificationforAirEntrainingAdmixturesforConcrete

5. ASTMC‐494‐SpecificationforChemicalAdmixturesforConcrete6. ASTM A‐615 ‐ Specification for Deformed and Plain Billet Steel Bars for Concrete

Reinforcement

7. ASTMC‐94‐SpecificationforReady‐MixedConcrete

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8. ASTMC‐31‐PracticeforMakingandCuringConcreteTestSpecimensintheField

9. ASTMC39‐TestMethodforCompressiveStrengthofCylindricalConcreteSpecimens

10. ASTMC42‐TestMethodforObtainingandTestingDrilledCoresandSawedBeamsof

Concrete1.05 SUBMITTALS

A. TheContractorshallsubmitthefollowingdataestablishedperSection3.9ofACI301.

1. Concretemixdesigns,testresultsandcurvesplottedtoestablishwatercementratioifparagraph3.9.3.3ofACI301isused.

2. Proposedmixdesignsandallnecessarysubstantiatingdatausedtoestablishproposed

mixdesignsifparagraph3.9.1.1or3.9.1.2ofACI301isused.

3. Mix designs for all mixes proposed or required to be used, including all mixescontainingadmixtures.

4. Acertifiedcopyofthecontrolrecordsoftheproposedproductionfacilityestablishing

thestandarddeviationasdefinedinparagraph3.9.1.1ofACI301.

B. CertificationattestingthatadmixturesequalorexceedsthephysicalrequirementsofASTMC‐494forTypeA(waterreducing)TypeD(waterreducingandretarding),andTypeE(waterreducingandaccelerating)admixtures.

C. Drawingsshowinglocationsofallproposedconstructionjoints.

D. CertificationthattheconcreteaggregatescomplywiththeprovisionsofASTMC33.

E. Certificationthattheair‐entrainingadmixturecomplieswithASTMC‐260.1.06 QUALITYASSURANCE(SpecialInspection)

A. Consistency:Concreteshallbeofsuchconsistencythatitcanbeworkedreadilyintoallpartsoftheformsandaroundembeddedwork,withoutpermittingthematerialstosegregate,orfreewatertocollectonthesurface.

B. CompressionTests:

1. Duringtheprogressofthework,atleastonesetoffourcompressiontestcylindersshallbemadeforeach50cubicyardsofstructuralconcreteormajorfractionthereof,andnotlessthanonesuchsetforeachtypeofconcreteforeachdayspouring.Cylindersmade in the field shall bemadeand cured in accordancewith theASTMStandardMethodofMakingandCuringConcreteTestSpecimensintheField,designationC31,except thatwhereverpossiblemoldsshallbe leftoncylindersuntil theyreach thelaboratory.

2. OnecylinderofeachsetshallbebrokeninaccordancewithASTMC‐39atsevendays

andtheotherthreeat twenty‐eightdays. TwocopiesofthesetestresultsshallbesubmittedtotheEngineeronthesamedayofthetests.

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3. Additional tests of the in‐place concrete shall bemadewhen test results indicatespecifiedconcretestrengthsandothercharacteristicshavenotbeenattainedinthestructure.CoredcylindersusedtotestconcreteadequacyshallcomplywithASTMC42.All test procedures and results shall be subject to the review and approval of theEngineer. The Contractor shall pay for such tests when unacceptable concrete isverified. On evidence of these tests, any concrete that fails tomeet the specifiedstrengthrequirementsshallbestrengthenedorreplacedasdirectedbytheEngineerattheContractor'sexpense.

C. InsertsinConcreteOtherTrades:

1. All trades shall be notified, at the proper time, to install items tobe embedded in

concrete.

2. Allcastings,inserts,conduits,andothermetalworkshallbeaccuratelybuiltintoorencasedintheconcretebytheContractorasdirectedandallnecessaryprecautionsshall be taken to prevent themetalwork from being displaced or deformed. Theinstallationshallbeinspectedbeforeconcreteisplaced.

3. Anchorboltsshallbesetbymeansofsubstantialtemplates.

D. Testing:

1. Thenecessarytesting(SpecialInspection)serviceofthissectionshallbeperformedby

anindependentInspectionagencyhiredbytheOwner.

2. Thetestingagencyshallperformthefollowingtestsonthesampledconcrete:

a. Slump

b. AirContent

c. ConcreteTemperature

d. CompressiontestofcylindersmadeunderparagraphB.

3. If,intheopinionoftheEngineer,thereisreasonabledoubtthattheconcreteaggregatescomplywithASTMC33.Thetestingagencyshall,testthefineaggregateandcourseaggregateforcompliancewiththesespecifications.

4. WrittenreportsshallbesubmittedtotheEngineer.

E. HotWeatherRequirements:Placingofconcreteunderconditionsofhightemperatures,low

humidityorwindshallbedoneinaccordancewiththeAmericanConcreteInstitute"HotWeatherConcreting"(ACI305R‐89).

F. ColdWeatherRequirements:Coldweatherconcretingproceduresandprecautionsshallconform

withAmericanConcreteInstitute"ColdWeatherConcreting"(ACI306R‐88).PART2‐PRODUCTS2.01 CONCRETEMIX

A. StructuralconcreteshallbeproportionedbySection3.9ofACI301.

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B. SelectionofProportionsforStructuralConcrete:

1. 4,000psicompressiveforstrengthat28days.

2. TypeIcementpluswaterreducingdispersingagentandair.

3. Maximum(water)/(cementandwaterreducingdispersingagent)ratio=0.45.

4. Minimumcementcontent=564lbs.(6.0bags)/cu.yd.concrete.

5. Nominalmaximum size coarse aggregate =No. 67 (3/4"maximum)orNo. 57 (1"

maximum).

6. Aircontent=6%plusorminus1%byvolume.

7. Slump=4”(+/‐1”)inaccordancewithASTMC‐143.2.02 OPTIONALCONCRETEMIXUSINGFLYASH

SelectionofProportionsforStructuralConcrete:

A. 4,000psicompressiveforstrengthat28days.

B. TypeIcementpluswaterreducingdispersingagentandair.

C. Maximum(water)/(cementpluswaterreducingdispersingagent)ratio‐0.45.

D. Minimumcementcontent‐517lbs.(5.5bags)/cu.yd.concrete.

E. MaximumFlyAshContent‐71lbs./cu.yd.

F. Nominalmaximumsizecoarseaggregate‐No.67(3/4"maximum)orNo.57(1"maximum).

G. Aircontent‐6%plusorminus2%byvolume.H. Slump=4”(+/‐1”)inaccordancewithASTMC‐143.

2.03 FLYASHCONCRETE

A. In theabsenceofaverifiedandacceptablehistoryof flyashconcretemixes, the followingprocedureisrequiredtoestablishthequalityoftheconcretemix.

B. Trialbatchesmustbemadestarting30daysaheadofinitialconcretepour.Three(3)mixesshallbedesignedandproducedatnocosttotheOwnerortheEngineerasfollows:

1. MixusingTypeIcementwithwaterreducingadmixturefornormaltemperatures(ClassA).

2. MixusingTypeIcementwithwaterreducingadmixtureforcoldweathertemperatures

(ClassA).

3. MixusingTypeIcementwithwaterreducingadmixtureforhottemperatures(ClassA).

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C. Four(4)testcylindersshallbecastforeachofthe(3)mixes.Two(2)cylindersshallbebrokenat7days,andtwo(2)cylindersshallbebrokenat28days,foreachofthe(3)mixes.Thetrialbatchdesignreportshallincludestrengthbreaksat7‐daysand28‐days,aircontent,etc.

D. Thewater‐reducing,cementdispersingadmixtureusedinflyashconcrete,shallbeanormal,accelerated,orretardedhardeningadmixture.Theadmixtureshallbeusedatoptimumdosagetooffsettheslowstrengthdevelopmentandsettingcharacteristicsoftheflyash.Onlythosebrandsofadmixturethatcanprovidereadily available field service on short notice to provide field services, inspection, and assistance, will beacceptable.

E. Priortotheuseofflyashconcrete,recentmillreportsshallbesubmittedonaregularbasisduringtheproject.Maximumlossofignition(LOI)shallbe6%.

F. Testsforaircontentshallbemadetwiceadayatthejobsitepriortopouring,forallmixescontainingflyash.2.04 ADMIXTURES

A. AnairentrainingadmixtureshallbeusedonallconcreteandshallbetheMasterBuildersMB‐VR,orMicroAir,EuclidChemicalCompanyAIR‐MIX,W.R.GracesDarex,orequal.TheadmixtureshallmeettherequirementsofASTMC‐260.Certificationattesting to thepercentofeffectivesolidsandcomplianceof thematerialwithASTMC‐260shallbefurnished.

B. Awater‐reducing, admixture for concrete shall conform toASTMC‐494 for typeA (water‐reducingandnormalsettingadmixtures)andshallbeMasterBuildersPozzolith344N,Nox‐CretePlastiflow,orPlastocrete161bySika,oranapprovedequal.

C. Thewater‐reducing,setretardingadmixtureforconcreteshallconformtoASTMC494forTypeD(waterreducingandretardingadmixtures)andshallbeMasterBuilders,Pozzolith100‐XR,Daratard‐17byW.R.Grace,oranapprovedequal.

D. CertificationshallbefurnishedattestingthattheadmixtureexceedsthephysicalrequirementsofASTMC‐494,TypeA,waterreducingandnormalsettingadmixture,andwhenrequired,forASTMC‐494,TypeD,waterreducingandretardingadmixturewhenusedwith localmaterialswithwhich thesubjectconcrete iscomposed.

E. Theadmixturemanufacturershallprovideaqualifiedconcretetechnicianemployedbythemanufacturertoassistinproportioningconcreteforoptimumuse.Healsowillbeavailabletoadviseonproperadditionoftheadmixturetotheconcreteandonadjustmentoftheconcretemixproportionstomeetchangingjobconditions.

F. Whenmorethanoneadmixtureisused,alladmixturesshallbebythesamemanufacturer.

G. Calciumchloridewillnotbepermittedasanadmixtureinanyconcrete.

H. Water‐reducing,nonchloride,acceleratorsshallconformtoASTMC494TypeEandshallbeAccelguard80bytheEuclidChemicalCompanyorPozzolithHighEarlybyMasterBuildersoranapprovedequal.

I. High‐RangeWater‐ReducingAdmixture:

1. High‐RangeWater‐ReducingAdmixture(SuperPlasticizer)shallconformtoASTMC494,TypeForTypeGandcontainingnotmorethan0.1percentchlorideions.

2. AvailableProducts:Subjecttocompliancewithrequirements,productswhichmaybe

incorporatedintheworkinclude,butarenotlimitedto,thefollowing:

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a. "WRDA19"or"Daracem";W.R.Grace.

b. "Sikament";SikaChemicalCorp.

c. "Rheobuild";MasterBuilders.

2.05 WATER

Thewaterforconcreteshallbeclean,fresh,andfreefrominjuriousamountsofoil,acid,alkali,organicmatter,orotherdeleterioussubstances.Nowatershallbeaddedtotheconcreteatthesiteunlessapprovedinwritingbytheconcreteprovider.2.06 AGGREGATES

A. Fineaggregatesshallbenaturalandhavingclean,hard,uncoatedgrains,andshallbefreefrominjuriousamountsofclay,dust,organicmatterorotherdeleterioussubstances,andshallconformtoASTMC‐33.Sandshallbegradedasfollows:

Percent

Passing3/8InchSieve 100PassingNo.4Sieve 45‐80PassingNo.50Sieve 5‐25PassingNo.100Sieve 0‐8

B. Coarseaggregateshallbecrushedstonehavingclean,hard,uncoatedparticles,andshallbefree

frominjuriousamountsofsoft,friable,thin,elongatedorlaminatedpieces.CoarseaggregatesshallconformtoASTMC‐33andshallbegradedinaccordancewiththefollowing:

PercentbyWeightNo.57 No.67

Passing1‐1/2‐InchSquareSieve 100 ‐‐‐Passing1‐InchSquareSieve 5‐100Passing3/4‐InchSquareSieve — 90‐100Passing1/2‐InchSquareSieve 25‐60 ‐‐‐Passing3/8‐InchSquareSieve — 20‐55PassingNo.4SquareSieve 0‐10 0‐10PassingNo.8SquareSieve 0‐5 0‐5

RefertoSection3.6ofACI301‐84formaximumsizeofcoarseaggregate.2.07 AGGREGATESANDDETERMININGPROPORTIONS

A. NoconcreteshallbeusedintheworkuntilthematerialsandmixdesignshavebeentestedbythetestinglaboratoryandacceptedbytheEngineer.

B. TheEngineershallhavetherighttoorderchangesasmaybenecessarytomeetthespecifiedrequirements.

C. Ifconcreteoftherequiredcharacteristicsisnotbeingproducedastheworkprogresses,theEngineermayordersuchchangesinproportionsormaterials,orboth,asmaybenecessarytosecureconcreteofthespecifiedquality.TheContractorshallmakesuchchangesathisownexpenseandnoextracompensationwillbeallowedbecauseofsuchchanges.

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03310‐8


2.08 MIXING

AllcentralplantandrollingstockequipmentandmethodsshallconformtotheTruckMixerandAgitatorStandardsoftheTruckMixerManufacturers'BureauoftheNationalReadyMixedConcreteAssn.,aswellastheACI Standards forMeasuring,Mixing,Transporting, andPlacingConcreteACI304R‐89, andwith theASTMspecificationforReadyMixedConcrete,DesignationC94‐89b.PART3‐EXECUTION3.01 PLACINGANDCOMPACTINGCONCRETE

A. Atleast20hoursbeforetheContractorproposedtomakeanyplacementofconcrete,heshallnotify theEngineerofhis intentionandplannedprocedure.Unlessotherwiseplanned,theworkshallbesoexecutedthatasectionbegunonanydayshallbecompletedduringdaylightofthesameday.

B. Readymixedconcreteshallbetransportedtothesiteinwatertightagitatorormixertrucks.Thequantityofconcretetobemixedordeliveredinanyonebatchshallnotexceedtheratedcapacityofthemixeroragitatorfortherespectiveconditionsasstatedonthenameplates.

C. InformationnecessarytocalculatethetotalmixingwatershallberecordedonthedeliveryslipfortheEngineer'sinformation.Totalmixingwaterincludesfreewaterontheaggregates,waterandicebatchedattheplant,andwateraddedbythetruckoperator.TheContractormayrequestpermissiontoaddwateratthejobsite,andwhentheadditionofwaterispermittedbytheEngineer,thequantityaddedshallbetheresponsibilityoftheContractorandinnocaseshallthetotalwaterperbagofcementexceedthatdeterminedbythedesignedmix.MixinganddischargetimeshallbeasrecommendedinACI‐304.

D. Concretewhichhasbecomecompactedorsegregatedduringtransportationtooronthesiteof

theworkshallbesatisfactorilyremixedjustpriortobeingplacedintheforms.

E. Partiallyhardenedconcreteshallnotbedepositedintheforms.Theretemperingofconcretewhichhaspartiallyhardened(thatis,theremixingofconcretewithorwithoutadditionalcement,aggregate,orwater)willnotbepermitted.

F. Theconcreteshallbemixedonlyinthequantityrequiredforimmediateuse.Concretethathasdevelopedaninitialsetshallnotbeused.TheContractorshallhavesufficientplantcapacityandtransportingapparatustoinsurecontinuousdeliveryattheraterequired.

G. Thetemperatureoftheconcretemixtureimmediatelybeforeplacementshallbebetween50degreesFand90degreesF.

H. Concretethatistruckmixedortransportedintruckmixersortruckagitatorsshallbedeliveredtothesiteoftheworkanddischargecompletedintheformswithin1‐1/2hoursorbeforethedrumhasrevolved300revolutionswhichevercomesfirstaftertheintroductionofthemixingwatertothecementandaggregates,ortheintroductionofthecementtotheaggregates.Whentheconcretetemperatureexceeds85degreesF,thetimeshallbereducedto45minutes.Concreteshallbeplacedintheformswithin15minutesafterdischargefromthemixeratthejobsite.

I. Ifconcreteisplacedbypumping,noaluminumshallbeusedinanypartsofthepumpingsystemwhichcontactormightcontaminatetheconcrete.Aluminumchutesandconveyorsshallnotbeused.

J. Noconcreteshallbeplacedonfrozensubgradeorinwater,oruntilthesubgrade,forms,andpreliminaryworkhavebeenaccepted.NoconcreteshallbeplaceduntilallmaterialstobebuiltintotheconcretehavebeensetandhavebeenacceptedbythevarioustradesandbytheEngineer.Allsuchmaterialsshallbethoroughlycleanandfreefromrust,scale,oil,oranyotherforeignmatter.

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K. Formsandexcavationsshallbefreefromwaterandalldirt,debris,andforeignmatterwhen

concreteisplaced.Exceptasotherwisedirected,woodformsandembeddedwoodcalledfororallowedshallbethoroughlywettedjustpriortoplacementofconcrete.

L. Chutesforconveyingconcreteshallbemetalormetallinedandofsuchsize,designandslopeastoensureacontinuousflowofconcretewithoutsegregation.Theslopeofchutesshallhaveapproximatelythesameslope.Thedischargeendofthechuteshallbeprovidedwithabaffle,orifrequired,aspoutandtheendofthechuteorspoutshallbekeptascloseaspracticableto,butinnoeventmorethan5ft.abovethesurfaceofthefreshconcrete.Whentheoperationisintermittent,thechuteshalldischargeintoahopper.

M. Inthinsectionsofconsiderableheight(suchaswallsandcolumns),concreteshallbeplacedinsuchmanneraswillpreventsegregationandaccumulationsofhardenedconcreteontheformsorreinforcementabovethemassofconcretebeingplaced.Toachievethisend,suitablehoppersspoutswithrestrictedoutlets,etc.shallbeusedasrequiredorpermittedunlesstheformsareprovidedwithsuitableopenings.

N. Chutes,hoppers,spouts,etc.shallbethoroughlycleanedbeforeandaftereachrunandthewateranddebrisshallnotbedischargedinsidetheform.

O. Foranyoneplacement,concreteshallbedepositedcontinuouslyinlayersofsuchthicknessthatnoconcretewillbedepositedonconcretewhichhashardenedsufficientlytocausetheformationofseamsandplanesofweaknesswithinthesection,andsoastomaintainuntilthecompletionoftheunit,anapproximatelyhorizontalplasticsurface.

P. Nowoodenspreadersshallbeleftintheconcrete.

Q. Duringandimmediatelyafterbeingdeposited,concreteshallbethoroughlycompactedbymeansofsuitabletoolsandmethods,suchasinternaltypemechanicalvibratorsoperatingatnotlessthan5,000rpm.orother tool spading to produce the required density and quality of finish. Vibration shall be done only byexperiencedoperatorsunderclosesupervisionandshallbecarriedinsuchmannerandonlylongtoproducehomogeneityandoptimumconsolidationwithoutpermittingsegregationofthesolidconstituents,"pumping"ofair,orotherobjectionableresults.Allvibratorsshallbesupplementedbyproperspadepuddlingapproximately2to3 in.awayfromformstoremoveincludedbubblesandhoneycomb.Excessivespadingagainsttheforms,causingthedepositionofweakmortaratthesurfaceshallbeavoided.

R. Theconcreteshallbethoroughlyroddedandtampedaboutembeddedmaterialssoastosecureperfectadhesionandpreventleakage.Careshallbetakentopreventthedisplacementofsuchmaterialsduringconcreting.

S. Allsubgradesshallbecoveredwitha6milminimumthicknesspolyethylenesheetwithjointslappedaminimumof12inchesunlessotherwiserequiredorpermitted.3.02 BONDINGCONCRETEATCONSTRUCTIONJOINTS

A. Inordertosecurefullbondatconstructionjoints,thesurfaceoftheconcretepreviouslyplaced(includingvertical,inclined,andsubstantiallyhorizontalareas)shallbethoroughlycleanedatforeignmaterialsandlaitance,ifany.

B. Thepreviouslyplacedconcreteatthejointshallbedampbutfreeofstandingwater.ThesurfaceshallbepreparedasperACI301.Thereferencedcementgroutshallbebetween1to2inchesthickonallwallpours.3.03 CURINGANDPROTECTION

A. Allconcrete,particularlyslabsandincludingfinishedsurfaces,shallbetreatedimmediatelyafterconcretingorcementfinishingiscompleted,toprovidecontinuousmoistcuringforatleastsevendays,regardless

03310‐10


oftheadjacentairtemperature.Wallsandverticalsurfacesmaybecoveredwithcontinuouslysaturatedburlap,orkeptmoistbyotheracceptablemeans.Horizontalsurfaces,slabs,etc.,shallbepondedtoadepthof1/2"whereverpracticable,orkeptcontinuouslywetbytheuseoflawnsprinklers,acompletecoveringofcontinuouslysaturatedburlap,orbyotheracceptablemeans.

B. Forat leastsevendaysafterhavingbeenplaced,allconcreteshallbesoprotectedthatthetemperatureatthesurfacewillnotfallbelow45degreesF.

C. Nomanure,salt,orotherchemicalsshallbeusedforprotection.

D. Theabovementioned7dayperiodsmaybereducedifcompressiontests,inaccordancewithASTMC‐39,onfieldcuredcylindersindicatethatexpected7daystrengthgainhasbeenachieved,andapprovalisgrantedbytheEngineer.

E. Whereverpracticable,finishedslabsshallbeprotectedfromthedirectraysofthesuntopreventcheckingandcrazing.

F. Curingcompoundsmaybeused.3.04 TRIMMINGANDREPAIROFSURFACEDEFECTS

A. TheContractorshallusesuitableforms,mixtureofconcrete,andworkmanshipsothatconcretesurfaces,whenexposed,willrequirenopatching.Concretewhich,intheopinionoftheEngineerhasexcessivehoneycomb,aggregatepockets,ordepressionswillberejectedandtheContractorshall,athisownexpenseremovetheentiresectioncontainingsuchdefectsandreplaceitwithacceptableconcrete.

B. Assoonastheformshavebeenstrippedandtheconcretesurfacesexposed, finsandotherprojectionsshallberemoved,recessesleftbytheremovalofformtiesshallbefilledandsurfacedefectswhichdonotimpairstructuralstrengthshallberepaired.

C. Defectiveconcreteshallbecutperpendiculartothesurfaceuntilsoundconcreteisreached,butnotlessthan1"deep.Theremainingconcreteshallbethoroughlyroughedandcleaned.Concreteinanareaatleast6"widesurroundingtheareatobepatchedshallbedampened.Abondinggroutshallbepreparedusingamixofapproximately1partcementto1partfinepassingaNo.30meshsieve,mixedtotheconsistencyofthickcream,andthenwellbrushedintothesurface.

D. The patching mixture shall be made of the same materials and approximately the sameproportionsasusedfortheconcreteexceptthatthecourseaggregateshallbeomittedandthemortarshallconsistofnotmorethan1partcementto2‐1/2partssandbydamploosevolume.Whiteportlandcementshallbesubstitutedforaportionofthegrayportlandcementonexposedconcreteinordertoproduceacolormatchingthecolorofthesurroundingconcrete.Thequantityofmixingwatershallbenomorethannecessaryforhandlingandplacing.Thepatchingmortarshallbemixedinadvanceandallowedtostandwithfrequentmanipulationwithatrowel,withoutadditionofwater,untilithasreachedthestiffestconsistencythatwillpermitplacing.

E. Aftersurfacewaterhasevaporatedfromtheareatobepatched,thebondcoatshallbewellbrushedintothesurface.Whenthebondcoatbeginstolosethewatersheen,thepremixedpatchingmortarshallbeapplied.Themortarshallbethoroughlyconsolidatedintoplaceandstruckoffsoastoleavethepatchslightlyhigherthanthesurroundingsurface.Topermitinitialshrinkage,itshallbeleftundisturbedforatleast1hourbeforebeingfinallyfinished.Thepatchedareashallbekeptdampfor7days.Metaltoolsshallnotbeusedinfinishingapatchinaformedwallwhichwillbeexposed.

F. Afterbeingcleanedandthoroughlydampened,thetieholesshallbefilledsolidwithpatchingmortar.

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G. Theuseofmortarpatchingasabovespecifiedshallbeconfinedtotherepairofsmalldefectsinrelativelygreenconcrete.Ifsubstantialrepairsarerequired,thedefectiveportionsshallbecutouttosoundconcreteandthedefectiveconcretereplacedbymeansofgunite,orthestructureshallbetakendownandrebuilt,allastheEngineermaydecideordirect.3.05 FINISHES

A. ExposedtoViewConcreteSurfaces:

1. All concrete exposed to view in the completed structures shall be producedusingmaterialsandworkmanshiptosuchqualitythatonlynominalfinishingwillberequired.Theprovisionsofparagraphs13.3,13.4,and13.6ofACI301shallapplytoallexteriorexposedtoviewconcretesurfaces.

2. Allformed,exterior,exposedtoview,concreteshallbepreparedasparagraph3.04B,

thenrubbed.Exteriorverticalsurfacesshallberubbedtoonefootbelowgrade.

B. All smooth form concrete vertical surfaces shall be true plane within 1/4" in 10 feet asdeterminedbya10footstraightedgeplaceanywhereonthesurfaceinanydirection.Abruptirregularitiesshallnotexceed1/8".

C. Exteriorplatforms,stepsandlandingsshallbegivenabroomfinish.Broomfinishshallbeappliedtosurfaceswhichhavebeensteeltroweledtoanevensmoothfinish.Thetroweledsurfaceshallthenbebroomedwithafiberbristlebrushinthedirectiontransversesothatofthemaintraffic.

D. WalkingsurfacesofslabsshallhaveasteeltroweledfinishunlessshownotherwiseonDrawings. ‐ENDOFSECTION‐

03600‐1

15029/7.19.2016 PRECISIONGROUTING

SECTION03600 PRECISIONGROUTINGPART1‐GENERAL1.01 WORKINCLUDED

A. Provide all labor, material, equipment and services required for grouting of equipment,machinery,structuralsteel,handrails,anchorboltsandotheritemsofworkforwhichgroutingisspecifiedorrequired.Allunnecessaryholes,openingsandcracksinexistingconcreteshallbefilledandpatched.

B. TheobjectoftheseSpecificationsistoobtaingroutwhichcanbemixedtoaflowableconsistency(i.e.,thinnerthanplasticconsistency),placedinleakproofforms,withaminimumofstrapping,withoutbleedwaterexceedingspecificationrequirements.Therequirementof24hourpresoakofexistingconcreteisofprimeimportanceandmustbeadheredto.1.02 DESCRIPTIONOFWORK

A. Highstrength,precisionsupportofmachinebasesandsoleplates,settinganchorbolts,andbearingplates.

B. Workincludesprovidinganon‐shrink,ready‐to‐use,fluidprecisiongroutmaterial;proportioned,pre‐mixedandpackagedatthefactory;deliveredtothejobsitetoplacewithonlytheadditionofwater;forming,placingandcuringasspecifiedinthissection.1.03 RELATEDWORK

A. Section03310‐StructuralConcrete.

B. Reviewalldivisionsandsectionsforequipment,machineryandotheritemstobegrouted.1.04 QUALITYASSURANCE

Complywiththefollowingcodes,standard,testandrecommendedpracticesforfoundationconcreteasapplytoprecisiongrouting.

A. ACI304‐GuideforMeasuring,Mixing,TransportingandPlacingConcrete.

B. ACI305‐HotWeatherConcreting.

C. ACI306‐ColdWeatherConcreting.

D. ACI347‐GuidetoFormworkforConcrete.

E. ASTMC191‐StandardTestMethodforTimeofSetofHydraulicCementbyVicatNeedle.

F. ASTMC827‐TestMethodforChangeinHeightatEarlyAgesofCylindricalSpecimensfromCementitiousMixtures.

G. Manufacturer'sInformationonUseofGrout.H. CorpsofEngineers‐CRDC‐621CorpsofEngineersSpecificationforNonshrinkGrout.

03600‐2


I. ASTMC109‐StandardTestMethodforCompressiveStrengthofHydraulicCementMortars.1.05 SUBMITTALS

A. TheContractorshallsubmittotheEngineerpriortoinstallation,manufacturer'sliteratureandcertifiedtestdatathatmaterialcomplieswiththerequirementsofthesespecifications.PART2‐PRODUCTS2.01 GROUT

Cement‐basedgroutsmusthaveaminimum15yearhistoryofuseandmeetthefollowingperformancerequirementsatmaximumwater.Theymustnotcontainexpansivecementormetallicparticlessuchasaluminumpowderorironfillings.

A. Plastic Volume Change: The grout shall showno shrinkage (0.0%) and amaximum4.0%expansionfromtimeofplacementuntilfinalsetwhentestedaccordingtoASTMC827.

B. HardenedVolumeChange:Thegroutshallshownoshrinkage(0.0%)andamaximum0.2%expansioninthehardenedstatewhentestedaccordingtoCRDC‐621.

C. CompressiveStrength:Thegroutshallshowaminimumof28‐daycompressivestrengthof5,000

psiwhentestedaccordingtoASTMC109,restrained.

D. Creep:Thegroutshallshowcreepequaltoorlessthan.6in./in.x10‐3at70FforaminimumofoneyearwhentestedaccordingtoCPRCreepTest(extrapolateddataisnotacceptable).

E. WorkingTime:Thegroutshallshowaconsistencygreaterthan125%foraminimum45minuteswhentestedaccordingtoapplicableconsistencysectionsofASTMC827at15minutesintervals.

F. Tests:UponRequestoftheEngineer,theCylinderPlateTestshallberunonanyfieldshipments.2.02 WATER

Watershallbesuitablefordrinking.PART3‐EXECUTION3.01 INSPECTION

A. Inspectconcretesurfacestoreceivegroutandverifythattheyarefreeofice,frost,dirt,grease,oil,curingcompounds,paintsimpregnationsandallloosematerialorforeignmatterlikelytoaffectthebondorperformanceofthegrout.

B. Newlyplacedconcreteshallhavebeenplacedandcuredsufficientlytoattainitsdesignstrength.C. Inspectbaseplatesforrust,oil,andotherdeleterioussubstances.

3.02 PREPARATION

A. Inordertoensureproperbondtothebaseplateandtheconcrete,allgrease,oil,dirt,curingcompounds,laitanceandotherdeleteriousmaterialsmustbecompletelyremovedfromtheconcreteandbottomofbaseplate.

03600‐3


B. Roughenthesurfacesbychipping,sandblastingorothermechanicalmeanstoassurebondofthegrouttotheexistingconcrete.Looseorbrokenconcreteshallberemoved.

C. Afterconcretesurfaceshavebeenwashedclean,theyshallthenbesaturatedwithwaterfor24hourspriortoplacementofcement‐basedgrout.

D. Uponcompletionofsaturationperiodexcesswatershallberemovedwithcleancompressedairpriortogrouting.

E. Formwork shall be compatible with proposed method of placing grout. Design for rapid,continuousandcompletefillingofspacetobegrouted.

1. Buildstrong,tightformsbracedsotheywillnotleakorbuckleunderweightoffluidgrout.Onplacingside,slantformat45degreesangleandpourgroutdirectlyonslantedface.Onothersides,placeformandpourgroutdirectlyonslantedface.Onothersides,placeform1/2"ormorefrombaseofbedplateand1"ormorehigherthanundersideoftheplate.

2. Caulk formswithgroutingmaterialbeingusedon insideorasand‐cementmortar

outside to prevent leakage and loss of "head".Use expandedpolystyrene or othermeanstocaulkbetweenfoundationandportionsofthebedplateandequipmenttosealoffareaswheregroutisnotdesired.

3.03 INSTALLATION

A. Preparationofgroutshallbeinpaddle‐typemortarmixersuitablemechanicalmixer.DONOTMIXBYHAND.Mixaccordingtothemanufacturer'srecommendations.

B. Mixgroutadjacenttoareabeinggrouted,havesufficientmanpowerandequipmentavailableforrapidandcontinuousmixingandplacing.Donotaddcement,sandorpeagravel,additives.

C. Avoidaconsistencythatproducesbleeding.Mixmaterialsforaminimumof3minutesandnotmorethan5minutesandplaceimmediately.Donotretemper.Donotusemixingwaterabove80degreesF(27degreesC).

D. Groutshallbeplacedunderenvironmentalconditionsacceptabletomanufacturer'sstandardsfortheproduct.

E. Placing:Groutmaybedrypacked,flowed,vibratedorpumpedintoplace.Allgroutingshalltakeplacefromonesideoftheplatetotheothertoavoidtrappingair.

F. Cutback:Justbeforethegrouthasreacheditsfinalset,thegroutshallbecutbacktotheloweredgeoftheplate.A45degreeangleorverticalcutbackshallbeused.

G. Curing: Thegroutshallbekeptmoistforaminimumofthreedays.Themethodneededtoprotect thegroutwilldependon temperature,humidityandwind.Wetburlap,a soakerhose, sunshading,pondingandinextremeconditionsacombinationofmethodsshallbeemployed.

H. Fieldservicerepresentativeofthemanufacturershallbeavailableduringinitialplanningforinstallationtosuggestrecommendedproceduresandatstartofplacementforfurthersuggestions.

I. Aminimumofthree(3)daysnoticeshallbegivenbytheContractortothemanufacturerpriortouseoftheproduct. ‐ENDOFSECTION‐

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