SECTION

WEDGINGTITESEAL(WTS)SLIDEGATES

PART1GENERAL

1.1SUMMARY

A.ThisSectionincludesallSlideGatesrequiredfor thecomplete installationofthework.

1.2REFERENCES

A.Design,fabricateandtestSlideGatesandmaterialsinaccordancewithmanufacturer’srecommendedproceduresandthefollowingcodesandstandards:

1. / ASTMA193 / -StainlessSteelAnchorBolts
2. / ASTMA276 / -StainlessSteelBars
3. / ASTMB584 / -Alloy865ManganeseBronze
4. / ASTMD256 / -IzodImpactStrength
5. / ASTMD570 / -WaterAbsorptionRate
6. / ASTMD638 / -TensileStrength
7. / ASTMD695 / -CompressivePropertiesofRigidPlastic
8. / ASTMD696 / -CoefficientofLinearExpansion
9. / ASTMD790 / -FlexuralProperties
10. / ASTMD792 / -DensityandSpecificGravityat230C
11. / ASTMD1056 / -PolymerGrade
12. / ASTMD2563-0 / -VisualDefects
13. / ASTMD2583 / -IndentationHardness
14. / ASTMD2584 / -Resin,GlassFillerContent
15. / AWWAC-563 / -FabricatedCompositeSlideGates
16. / AWWAC-540 / -PowerActuatingDevices-SlideGates

B.Compositionoftheslidegatelaminateshallbeinaccordancewiththerecommendations shownin theQualityAssuranceReport forReinforcedThermosetPlastic(RTP)CorrosionResistantEquipmentpreparedunderthesponsorshipof theSocietyofthePlasticsIndustry,Inc.(SPI),andtheMaterialTechnologyInstitute(MTI)oftheChemicalProcessIndustryfor“HandLay-UpLaminates,”andshallmeetthespecificationsforTypeI,Grade10laminatesshowninAppendixM-1ofsaidreport.

C.Manufacturer shallbeexperiencedinthedesignandmanufactureof specificSlideGatesandaccessoriesforaminimumperiodof20years.

D.Manufacturermustprovidewarrantyfor25yearsagainstfailureduetocorrosion.

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ADDRESS - P.O. Box 100 9665 SW Tualatin-Sherwood Rd. Tualatin, Oregon

1.3SUBMITTALS

A.Submitthefollowingforacceptance:

1.ApprovalDrawings

a.Showingallcriticaldimensions.

b.Showingprincipalpartsandmaterials.

2.Sparepartslist(whenapplicable).

1.4DELIVERY,STORAGEANDHANDLING

A.Ship all Slide Gates with suitable packaging to protect products fromdamage.

B.ProtectSlideGatethreads,flanges,stemsandoperatorsfromdamage.

PART2PRODUCTS

2.1MATERIALS

A.Gatebodyshallbe:

1.Engineeredcompositefiberglassreinforcedplastic(FRP)completelyencapsulatinganinternalsteelreinforcingstructure.

a.Moldedtocreateaseamlesscorrosionbarrierimpervioustomoisture.

b.FRPresinshallbe ______.

c.Internal Steel Reinforcing: Carbon Steel as needed fordeflectionrequirements.

d.InternalCoreFoam:6lb(0.9kg)polyisocyanurateclosedcellrigidfoam.

B.GuideFrame

1.GuideFrameRails:Choose a material

2.OperatorSupportYoke:Choose a material

C.StemsandGateHardware

1.Stem:Choose a material

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ADDRESS - P.O. Box 100 9665 SW Tualatin-Sherwood Rd. Tualatin, Oregon

2.Gate Hardware: Choose a material

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ADDRESS - P.O. Box 100 9665 SW Tualatin-Sherwood Rd. Tualatin, Oregon

D.Seals

1.SideandFlushBottomSeals:HollowBulbJSealmoldedofextrudedChoose a material

E.J-SealClampingBarandFasteners

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ADDRESS - P.O. Box 100 9665 SW Tualatin-Sherwood Rd. Tualatin, Oregon

1.ClampingBar: Choose a material

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ADDRESS - P.O. Box 100 9665 SW Tualatin-Sherwood Rd. Tualatin, Oregon

2.Fasteners: Choose a material

F.LiftNutsandThrustNuts

1.ManganeseBronze,ASTMB-584,Alloy865.

G.ThrustCollar

1.Choose a material

H.Hand wheel

1.CastIron,ASTMA-126,ClassB.

I.AnchorBolts

1.Choose a material

J.StemCover

1.Butyrate(manualhand wheel).

2.ClearPVC(ElectricMotorandGearOperators).

K.StemGuides(Whenapplicable)

1.UHMW

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ADDRESS - P.O. Box 100 9665 SW Tualatin-Sherwood Rd. Tualatin, Oregon

2.2WEDGINGTITESEALSLIDEGATES

A.AcceptableManufacturers:

1.Plasti-FabInc

2.Orapprovedequal.Pre-approvedbyEngineeratleast10businessdayspriortobiddate.

a.ManufacturermusthaveaqualifiedEngineeronstaffwithatleast5yearsexperiencewithwatercontrolgates.

B.WedgingTitesealGatesshallbedesignedtominimizeleakagetowellbelowthatallowedbyAWWAC-563:

1.Leakage:

a.AtthemaximumoperatingheadpressuretheleakageoftheWedging TitesealGatesshallnotexceed100ccperminuteperfootofwettedperimeter.

b.Slidegateshallhavesealsthatwedgeintotheguideframeseatonclosure.

2.3DESIGNCRITERIA

A.CompositionoftheslidegatelaminateshallbeinaccordancewiththerecommendationsshownintheQualityAssuranceReport for ReinforcedThermostatPlastic(RTP)CorrosionResistantEquipmentpreparedunderthesponsorshipthe Societyofthe PlasticsIndustry, Inc.(SPI)andtheMaterialTechnologyInstituteoftheChemicalProcessIndustries,Inc.(MTI)for“HandLay-upLaminates”andshallmeetthespecificationsforType1,Grade10laminatesshowninAppendixM-1ofsaidreport.

1.VisualinspectionfordefectsshallbemadewithouttheaidofmagnificationanddefectsshallbeclassifiedastotypeandlevelasshowninTable1ofANSI/ASTMD2563-0,approved1977,(oranysubsequentrevision).Allowablesurfacetolerancesareasfollows:

DEFECTS / ALLOWABLETOLERANCE
CracksCrazingBlistersChipsPits
DrySpotsFishEyesBurnedAreasEntrappedAir / None
Wrinklesandsolidblisters,nottoexceed1/8” / MaximumDeviation:10%ofthickness
Surfaceporosity(pinholesorporesinthelaminatesurface) / None
ExposedGlassExposureofcutedges / None
Scratches / Nonemorethan.002”deep
(.05mm)
ForeignMatter / None

B.MaximumFiberStress

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ADDRESS - P.O. Box 100 9665 SW Tualatin-Sherwood Rd. Tualatin, Oregon

1.Design with a safety factor of 2 with regard to yield strength.

C.Deflection

1.Deflectionacrossthegatewidthshallbelimitedto:L/360or¼”(6mm),whicheverisless,atthemaximumoperatinghead.

D.HeadPressure

1.Gateshallbedesignedforheadpressuretothetopofthegatedisk.

E.GateSizeas shown on the contact drawings and/or gate schedule.

F.SurfaceConditions

1.Allslidegatesshallbeflatandlevel.

2.Warpagethroughouttheentiregateshallnotproduceacrownofmorethan1/16”(1.6mm)inanydirection.

3.Gateshavingreinforcingmembersboltedorbondedtoflatsheetstockwillnotbeacceptable.

G.SealedArea

1.Slidegateshallsealonthreesides–notopseal.

2.4CONSTRUCTION

A.GateBody

1.Slidegatebodyshallbemanufacturedoffiberglassreinforcedpolyestertotallyencapsulatinganinternalreinforcingstructure.

2.Eachgateshallbemoldedindividuallytotheexactdimensionsspecified.Seamsandjointsinandonthebodyarenotacceptable.

3.Slidegatesshallbemanufacturedofreinforcedthermosetplastic.

4.GatebodyshallhaveUVStabilizingpigmentintheResintoprovidelong-termprotectionfromUV.

5.Thesurfaceshallberesinrichtoadepthof.010inchesto.020inches(.25-.51mm)andreinforcedwithC-glassand/orpolymericfibersurfacingmaterial.

6.Thesurfaceshallbefreeofexposedreinforcingfibers.

7.Thecompositionoftheselayersshallbeapproximately95%(byweight)resin.Theremaininglaminateshallbemadeupofcopolymercompositeandreinforcingfibersinaform,orientationandpositiontomeetthemechanicalrequirements.

8.Structuralreinforcingshallbeutilizedtoattainthenecessary stiffnesstomeetdeflectionrequirements,andshallbewellencapsulatedtoensureagainstanypermeationbywatertothecoreareas.

9.AChoose a materialstemmountingbracketshallfastentothegatewiththroughbolts.Thethroughholesshallnotpassthroughorbeincontactwiththeinternalmildsteelreinforcing.

10.Corematerialmustbe100%resistanttodecayandattackbyfungusandbacteriaandberesistanttohydrocarbons.

B.Seals

1.Thegateshallbeequippedwithelastomericsealstoreduceleakage.

2.ElastomericJ-sealsshallbemadeofmoldedorextrudedneoprene/EPDMhavingahardnessrangeof55to65shoreAdurometerandconformingtoASTMspec.D-2000havingamaximumcompressionsetof25%,andlowtemperaturebrittlenesstomeetsuffixF-17(-400).

3.Seals,includingbottomseals,shallbemountedongatecoverswithChoose a materialcap screws and Choose a material

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ADDRESS - P.O. Box 100 9665 SW Tualatin-Sherwood Rd. Tualatin, Oregon

clampingbarsthusprovidingameansofrepair,andreplacementwithoutdewateringthechannel.

4.WTSgatesshallbedesignedandmanufacturedwiththesealsmechanicallyaffixedtothegatebodyNOTtheguideframes.Whenreplacementofsealseventuallybecomes necessary(variablessuchasfrequencyofopen-closecycles,chemicalcompositionandabrasivenessofthefluidwillultimatelydeterminetheeffectivelifeoftheseals)theWTSgateshallberemovablefromtheguideframewithoutde-wateringthechanneland,inasuitableworkarea,easilyandeconomicallyrefittedwithanewseals.Gatesdesignedwithsealsintegraltotheguideframes,whichrequirechannelde-watering,scaffolding/lifts/laddersandtime-consuming“nonworkshop”conditionsshallnotbepermitted.

C.FramesandGuides

1.GuidesshallbestyledforChoose a itemasshownonthecontractdrawingsand/orgateschedule.

2.GuidesshallbefabricatedfromChoose a materialandshallhaveaslotsuitableformatingwiththegatebody.

3.Whereself-containedguidesareextendedabovetheoperatingfloorleveltoformthebenchstanduponwhichtheliftmechanismisfastened,they mustbesuitablystrongandrigidwithouttheuseofadditionalstiffeningmembers.

4.Wherea wallmountedguideframeextendsaboveaconcretewallthetopanchorboltshallbenotmorethan6”(152mm)belowthetopofthewall.

5.Gateinvertsshallbeflushwiththechannelbottom.

6.Theheadrailshallbeaffixedsoastoallowthegatetoberemovedfromtheguidewithoutdisassembly.

7.Theheadrailshallhaveamaximumdeflectionof1/4”(6mm)whensubjectedtoahorizontalforceoftwotimesthe40lb.(2.8ksc)maximumhandwheelpull.

8.IftheGatewidthisgreaterthan48” (1219mm)and2x thegateheight,atandem stem shallbeused.

9.GuidestobeboltedtotheheadwallshallallowforeaseofmountingtothechannelwallbymeansofChoose a materialanchorbolts.

10.Nowallthimblesshallberequiredforinstallation.

D.LiftsOperators

1.Operatorsshallbesizedtostartthegatemovingunderamaximumheadpressurewithapullofnotmorethan40lbs(2.8ksc).

2.Amanualhandwheelshallbesuppliedthatiscompatiblewiththelift.

E.Electric,pneumaticorhydraulicOperators(OPTIONAL)

1.GateManufacturer shallprovideactuatorsperElectricMotorOperatorManufacturer’srecommendedsizesbasedonOperatingForcesanddesignrequirementsandshallbeforopen/close or modulatingservice.

F.OperatingStems

1.EachWTSgateshallbeequippedwitharisingornon-risingoperating

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ADDRESS - P.O. Box 100 9665 SW Tualatin-Sherwood Rd. Tualatin, Oregon

stem as shown on the contact drawings and/or gate schedule.ThestemshallbeChoose a material

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ADDRESS - P.O. Box 100 9665 SW Tualatin-Sherwood Rd. Tualatin, Oregon

2.The stem will have Acme threads and shall be provided withadjustablestopcollarstolimitupwardanddownwardtravel.

3.Stemsshallhaveamaximum L/Rof200.

4.StemguideswithUHMWbushingsshallbeusedtomaintainanL/Rof200.

G.StemCovers

1.Transparentplasticstemcoversshallbeprovidedwithventholestominimizecondensation.

2.Thestemcoversshallbemarkedwith`Open’and`Closed’positionindicators.

H.Pedestals

1.Fornon-self-containedguideframesapedestalshallbefurnishedformountingtheoperator.

2.PedestalmaterialshallbeChoose a material

2.5PHYSICALPROPERTIES

A.Structural characteristicsfora 1/8”(3mm)glassmat laminateshallmeet thefollowingminimumphysicalproperties:

Tensilestrength / 15,000psi(1034ksc)
FlexuralModulus / 1,000,000psi(70307ksc)
FlexuralStrength / 20,000psi(1406ksc)
CompressiveStrength / 22,000psi(1547ksc)
ImpactStrength / 9.0ft-lbs/in.(1.24kgf.m/25m)
Waterabsorption / 0.13%(in24hours)

B.Seals:ExtrudedVirginNeopreneSealsshallhavethefollowingphysicalcharacteristics:

SpecificGravity / 1.25
Hardness / 55–65ShoreADurometer
TensileStrength / 1500psimin.(0.07ksc)
Elongation / 300%
Lowtemperaturebrittleness / -40

PART3EXECUTION

3.1INSTALLATION

A.Thoroughlycleanandremoveallshippingmaterialspriortosetting.

B.InstallGatesperManufacturer’srecommendations.

C.OperateallSlideGatesfromfullyopenedtototallyclosed.

3.2FIELDTESTING(OPTIONAL)

A.QualifiedFactoryrepresentativeshallprovide(8)hoursoftrainingforfacilityemployees.(Optional)

B.RepresentativeshallcompleteaCertificationofProperInstallationandprovidecopiestotheOwner,Engineer,ContractorandManufacturingFacility.(Whenapplicable)

ENDOFSECTION

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ADDRESS - P.O. Box 100 9665 SW Tualatin-Sherwood Rd. Tualatin, Oregon