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04ADAAOCT10DamGoodPeterDennisTheWyaralongDamProjectislocatedontheTeviotBrookapproximately14kilometresnorthwestofBeaudesertintheLoganRiverCatchment.ThedamisregardedasanintegralpartoftheQueenslandGovernmentx19splantoensureasafeandsustainablewatersupplyforSouthEastQueenslandx19sgrowingpopulation.TheWyaralongDamwillworkinconjunctionwiththeCedarGroveWeirandtheBromeltonOffstreamStoragetoimprovereliabilityoftheLoganRiverWaterSupplySchemeindroughtconditions.Itwillhelpmeettheareax19sgrowingdemandforwaterforurbanandindustrialdevelopmentandprovideadditionalsupplyintotheSouthEastQueenslandWaterGrid.Constructionofthedamcommencedinlate2009andtheprojectisexpectedtobecompletedbylate2011atatotalcostof348million.Thefullsupplyareaoftheprojectis1230hectaresandthedamwhenfullwillhaveatotalcapacityof103000megalitreswithanexpectedannualyieldof21000megalitreswhenoperatedwithCedarGroveWeir.ConstructionoftheWyaralongDamhasbeenawardedtotheWyaralongDamAlliancecomprisingofMacmahonContractorsQueenslandWaterInfrastructurePtyLtdWagnersQuarriesASIConstructorsHydroTasmaniaRizzoAustraliaandSMEC.Over280000tonnesofrockhavebeenexcavatedtopreparethefoundationsforthe500metrelongdamwall.AllaggregatesfortherollercompactedconcreteRCChavebeensourcedandsizedonsite.Whencompletedthedamwallwillhaveutilisedsome172000mofRCC.RCChasthreekeypropertiesthatmakeituniquelysuitedfordamseconomyperformanceandhigh-speedconstruction.TheRCCusedbytheWyaralongDamAlliancehassimilaringredientsasconventionalconcretecementByashwaterandaggregatesbutismuchdrierandhaszeroslump.TheRCCmixconsistsof6cementitiousmaterialcomprisingofanevenproportionofcementandByash.TheRCCforthedamwallismixedbyanAran400continuousmixerandistransportedforplacementusingarticulateddumptrucksAttedwithspecialisedejectorbodies.TheconcreteisplacedusingD5sizedbulldozersandcompactedbyvibratoryrollers.Sectionsarebuiltlift-by-liftinsuccessivehorizontallayers.Oncealayerisplaceditcanimmediatelysupporttheearthmovingequipmenttoplacethenextlayer.Placementoccursovernightbetweenthehoursof5.30pmand4.30am.BothByashandcementaretransportedtositeusingpredominantly20ftisotankerscarriedonskeltrailers.Trucksareunloadedinalaydownyardbya30tonnecontainerliftandarethenreloadedwithemptiedcontainersforreAlling.Thishasenabledrapidturnaroundandbetterutilisationoftransportequipmentandhasalsovastlyreducedthenumberofvehiclesrequiredintothedamsite.ClassiAedByashfortheproductionofboththeconventionalandrollercompactedconcreteusedisbeingsuppliedfromtheMillmerranPowerStationbyMillmerranFlyashPtyLtd.Overtheperiodofconstructionover20000tonnesofByashorover500BDoubleloadswillbedeliveredtotheprojectasigniAcantbeneAcialreuseutilisationofcoalcombustionproducts.MillmerranFlyashhasbeensupplyingconcretegradeByashintoQLDandNSWsincelate2008fromtheirstate-of-the-artashclassiAcationplant.ForalloperationsandsalesenquiriescontactPeterDennison0428756528.