SECTION
WEDGINGTITESEAL(WTS)SLIDEGATES
PART1GENERAL
1.1SUMMARY
A.ThisSectionincludesallSlideGatesrequiredfor thecomplete installationofthework.
1.2REFERENCES
A.Design,fabricateandtestSlideGatesandmaterialsinaccordancewithmanufacturer’srecommendedproceduresandthefollowingcodesandstandards:
1. / ASTMA193 / -StainlessSteelAnchorBolts2. / 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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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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2.Gate Hardware: Choose a material
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D.Seals
1.SideandFlushBottomSeals:HollowBulbJSealmoldedofextrudedChoose a material
E.J-SealClampingBarandFasteners
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1.ClampingBar: Choose a material
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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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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 / ALLOWABLETOLERANCECracksCrazingBlistersChipsPits
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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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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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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stem as shown on the contact drawings and/or gate schedule.ThestemshallbeChoose a material
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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 / 1.25Hardness / 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
PHONE - 503.692.5460 | | FAX - 503.210.0602 | | E-MAIL -| WEB -
ADDRESS - P.O. Box 100 9665 SW Tualatin-Sherwood Rd. Tualatin, Oregon