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首页 滑板公园设计建造须知

滑板公园设计建造须知.doc

滑板公园设计建造须知

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2018-02-11 0人阅读 举报 0 0 暂无简介

简介:本文档为《滑板公园设计建造须知doc》,可适用于职业岗位领域

滑板公园设计建造须知ProjectDeliverySystemDesignbuildisthepreferredprojectdeliverysystemfortheconcreteskateparkconstructionTheDesignBuildInstituteofAmericadefinesdesignbuildas"Asystemofcontractingunderwhichoneentityperformsbotharchitectureengineeringandconstructionunderonesinglecontract"OurparticularbrandofdesignbuildisslightlymorerigorousallAirspeeddesignersplayanintimate,handsonroleintheskateparkconstructionprocess,especiallyformwork,concreteplacement,andfinishingItisabsolutelycrucialthatdesignbuildershavethefreedomtoalterthedesignastheyseefitwithincontractuallimitsExcellentdesignbuildcontractsareavailablefromDBIASkateparkConstructionSkateparkConstructionDesignSkateparkdesignersmustbeactiveskateboarders,abletounderstandandappreciatetheirownworkandtheworkoftheirpeersAsstatedabove,skateparkdesignbuildersrequirethefreedomtoaltertheirdesignatanytimeduringtheskateparkconstructionprocessDirtWorkAllsubstratebeneathnonstructuralslabsshouldbecompactedtoatleastofmaximumdensityasdeterminedbystandardproctoratoptimummoisturecontentThefinallayerofsubstrateshouldconsistofcompactedgranularmaterialsuchassandorgravelwhosethicknesscomplieswithlocalcodeInregionssubjecttofreezing,alocalengineermustbeconsulted,asathickergravellayerandrigidpolystyrenefoaminsulationmayberequiredtopreventfrostheaveItisoftennecessarytobuildupwardstoavoidexcavatingbelowthewatertableInthiscase,itiscommonpracticetopourthetransitionsagainstremovableformsTheformsaretypicallyremovedafterseveraldaysofcuringandthetransitionsarebackfilledasiftheywereretainingwallsThispracticeisentirelyappropriateaslongasthebackfilliscompactedin'liftstoofmaximumdensityDrainageEspeciallyinrainyclimates,skateparksneedtodryquicklyPuddlesaretobeavoidedTothatend,decksandflatsshouldslopeatleast("perfoot)towardsthenearestareadrainoroutsideedgewherewatercanexittheskateparkDraincoversshouldbeflushwiththeridingsurfaceandfirmlyattached,butremovableforcleaningWherevernearsurfacegroundwaterispresent,alocalsoilsengineershouldbeconsultedandperforatedpipeunderdrainsshouldencircletheparkIfaninfiltratorsystemisused,itshouldincludea'minimumdiameteraccessshaftforsedimentsettling,retrievaloflostobjects,cleanout,andpumpingSkateparkConstructioninWaldport,OregonFormworkFormsandtemplatesusedtodefineshapesoftransitionsandotherstructuresshouldbefirmlysupportedandadequatetoensurethatthefinishedstructurecanconformtodesignspecificationsDesignbuildersoftenmakecrucialdesignadjustmentsinmidpour,soslavishdependencyonformworkisundesirableSkateparkConstruction:RebarFornonstructuralskateparkconstructionslabs,#graderebarplacedononefootcentersandtiedeveryotherjunctionissufficientRewirecanalsobeusedRebarshouldbecoveredbyatleastinchesofconcrete,aboveandbelowForretainingwallsandselfsupportingstructureslikefullpipes,seelocalcodesandconsultastructuralengineerSteelCopingCopingdiametermayvaryconsiderably,however"to"ODiscommonlyusedandveryacceptableTinyorhugecopingcanalsobeusedinmoderationfornoveltyTypicalcopingrevealatlipoftransitionsis"to"(appliestobothtopandface)Asisthecasewithcopingdiameter,largerorsmallerrevealscanbefunctionalinappropriateapplicationsGalvanizedandblackcoatedsteelschedulesprinklerpipearecommonlyusedforcopingStainlesssteelisneithernecessarynordesirableSteelcopingmustbesecurelyanchoredintotheconcreteToaccomplishthis,copingmaybeeitherweldedtotherebarcageatleasteverytwofeetorweldedtomudlugsplacedeverytwofeetForledgeswhereananglededgeisdesired,squaretubingissuperiortoangleironConcreteCopingPenroseblocksarefavoredaboveallotherprefabricatedcopingblocksfortheirdurabilityandgrindingcharacteristicsPouredinplaceconcretecopingalsoyieldsexcellentresultswhenpouredbyanexperiencedskateparkconstructioncrewSkateparkConstructioninFlorence,OregonShotCreteMixdesignsvaryfromregiontoregion,dependingonlocallyavailablematerialsandlocalconditionsTypicalshotCretespecsarepsiminimumstrength,sacksofcementpercubicyardPlasticityvarieswithapplicationandmixdesign,butshotcreteshouldnotbewetterthanasixinchslumpFlyash,silicafumeandsteelslagarealsocommoncomponentsofshotcretemixdesignsDuringshotcreting,measuresmustbetakentopreventtheformationofvoidsandrockpocketsTothisend,accumulationsofloosereboundaggregatemustberemoved,eithermanuallyorwiththeaidofcompressedairIdeally,theshotcretefinishlayerandthelayerwhichencasestherebarshouldbeshotonthesamedayIfseveraldayspassbetweensuccessivelayers,concretebondingagentshouldbeappliedtotheoldlayerbeforeshootingthefinishlayerShotcreteoversprayonexistingslabsshouldbecleanedoffimmediately,ifpossibleConventionalconcreteForflatslabs,decks,andsmalltransitions,psiconcreteisoftenspecifiedinordertoensureacreamymixthatcaneasilybefloatedandtrowelledsmoothHowever,thepsistrengthisofsecondaryconcernwhatreallymattersisfinishsmoothnessandresistancetowearandweatheringThemixdesigneratthelocalbatchplantshouldalwaysbeconsulted,asmaterialsavailabilityandseverityofweatheringvarieswithregionAggregatesizetypicallyrangesfrom"minusto"minus,withthesmalleraggregatebeingeasiertofinishandthelargerbeingcheaperConcretePlacementShapingShapersandfinishersshouldhaveadequatefloats,trowels,screedsandothertoolssufficienttoensurethatallcurvestransitionswillbecontinuouswithoutperceptiblebumpsorkinks,unlesskinkisspecifiedbyDesignerSpecializedskateparkconstructionteamshavecustommadetoolswhicharenotfamiliartoconventionalconcretecontractorsInaddition,theskillsneededtoshape,floatandfinishsteeptransitionswithoutintroducinghideouslumpsarespecifictoskateparkspecialistsThesearetwogoodreasonstohireadesignbuildteamSkateparkConstructioninReedsport,OregonConcretesurfacefinishSteeltrowelfinishonallridingsurfacesismandatoryThelastpassbeforeblacknessissufficientBroomfinishisonlyappropriateforpedestrianwalkwaysaroundaskateparkOververticalsurfacesliketheceilingsoffullpipesneednotbetrowellediftheyareformedusingasmoothmateriallikemasoniteSkateparkConstruction:CuringAfterthelasttoweling,concreteshouldbesealedwithadehydrationretardingcompoundsuchasacryliccureandsealorpenetratingsilicabasedsealer,alsoknownas"liquidglass"Inaddition,newpoursshouldbetarpedforatleastaweekafterpouringifdryweathermayoccurIffreezingtemperaturesoccur,freshslabsmustbeinsulatedandtarpedIdeally,skateparksshouldnotbepouredinfreezingconditionsSlabJointsInordertoensureasmooth,fastandquietride,alljointsbetweenslabsshouldbesmoothandflushNosidewalktypejointswithexpansionboardaredesirableSawcutsshouldbefilledwithanappropriatecaulkingifwidthislargerthan"inwidthButtjointsmustbespannedbyrebarToledo,OregonSkateparkConstructionEdgingEdgingwitharadiusedgingtoolshouldbeperformedalongtheoutsideedgesofslabsandoneithersideofcopingButtjointsneednotbeedged,butifedgingisperformeditisnecessarytoutilizeacustommadeedgingtoolwithanextremelytightradiusSafetyRailingsSafetyrailingsshouldbeplacedinaccordancewithapplicableOSHAorADArequirementsRailingsneednotbeplacedatthelipofanytransitions,butarenecessaryatthetopsoffullpipesSkateparkConstruction:CracksShrinkagecracksandsurfacecrazingarecosmeticblemisheswhichdonotaffecttheridingcharacteristicsofaskateparkShrinkagecrackscanbeminimizedbytheuseofdrymix,highcementcontent,andfanaticalpreventionofdehydrationduringcuringSurfacecrazingisacharacteristicofverysmoothsteeltrowelfinishes,andcanbeminimizedduringfloatingandfinishingbylimitingtheuseofwaterPropercuringalsominimizescrazingSettlingcracksaremoreseriousbecausetheycreateperceptiblediscontinuitiesintheridingsurfaceFortunately,settlingisavoidablebyadequatelycompactingthesubstrateandpreventingfrostheavewhereappropriate

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