6 BIM FAILURES - irp-cdn.multiscreensite.com...The use of BIM for spatial coordination is a vital...
Transcript of 6 BIM FAILURES - irp-cdn.multiscreensite.com...The use of BIM for spatial coordination is a vital...
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6 BIM FAILURES Thedesigniscomplete,contractsarewritten,theprojectteamisassembledandreadytobuild.Optimismisatitspeak!Tomeettheowner’sperformancerequirementsandcompletetheprojectontimewithinthebudget,constructionfieldcrewswillneedspatiallycoordinatedinstallationdrawings.TheuseofBIMforspatialcoordinationisavitallinkintheconstructionprojectsupplychain,wherethebuildingiscreatedinthevirtualworldandsoftwareisusedtofindandresolvecross-systemconflictsthatwouldotherwiseimpacttheconstructionteam.WhentheBIMlinkfailsitallowsundiscovereddesignconflictstoshutdownfieldwork,whichleadstodelays,dissention,disputes,addedcostsandclaims.ThefollowingBasepinexperienceshelpusunderstandandtakeactiontoprevent6commoncausesforBIMfailures.
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Non-ParticipatingTeamMembersBIMspatialcoordinationdependsonmodelingallbuildingsystems.Clashanalysiscannotseeproblemswhere3Delementsaremissingsowhenoneormoreparticipantsfailtoprovide3Dcontentitimpactstheentireteam.Whenstartinganewstatepolicecrimelabprojectonesubcontractordecidestosavemoneybynotmodelingtheirpipingsystems.AsrequiredbytheBIMExecutionPlantheysigncoordinationdocumentsnotedwith“subdidnotparticipate”.Theircrewsarriveinthefieldwithpre-fabricatedsystemstostartinstallingbutareputonholdbytheGC.TheirstrategytomoveiftheyblockothertradesisrejectedbytheGCandtheyarerequiredtowaituntilothersfinishandthentofittheirsystemsintoavailablespace.TheGCandothersubsproceededtoinstallwithoutconflicts.Thenon-participatingsubabsorbedfieldmodificationcostsexceeding4timesthemoneysavedbynotdoing3Dmodeling.
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LackofBIMContent
BIMspatialcoordinationdependsonmodelingallbuildingsystemsaccuratelyintermsofsize,location,andorientation.Whensystemsaremodeledconceptuallyinsteadofasreal-worldcontentitimpactstheentireproject.TheMEPdesignmodelprovidedat100%CDlackedpipinginsulation.Themechanicalcontractormodeledpipewithinsulationwhichincreasedverticalspatialrequirementsby14”.Toavoidconflictsintightcorridorspipingsystemswereforcedbelowtheceiling.Ceilingswereloweredtoaccommodatemechanicalbutadequatespacewasnotavailableforelectricalconduits.Thisexposedanon-buildabledesign.Onthefirstlevelelectricalfeedersweremovedtobelowgradeincurringaddedcostsanddelays.Theproblempersistedonupperlevelswhichcausedadditionaldisputesandclaims.ThedesignteamandGCwereunabletonegotiatesolutionswhichledtotheownerterminatingtheGCandforcingthebondingcompanytakeovertheproject.Theprojectisheadedtowardlitigation.
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BIMContentIncorrect
Creatinga“perfect”modeldoesnotguaranteeagoodBIMresultifpartsofthemodelareinaccurate.Amediacentershellandcoresteelmodelusedfortenantimprovementdesignhadparallelflangeroofbeams.ThebeamsslopedupwardtothepeakallowingroomforMEPFsystemstobeinstalledabovetheceiling.TheBIMcoordinationteamcompletedaclashfreefederatedmodelaheadofconstruction.Demolitionoftheceilingsrevealedanactualconditionofhorizontalbottomflanges.TheBIMteamcreatedanas-builtstructuralmodelthatrevealedMEPFclashesthroughouttheentireupperlevel.Thisrequiredaddedclashcoordinationandfieldmodificationstothesteelstructure.TheGCandsubssubmittedchangeordersfordelaysandaddedworkthatwerepaidbytheowner.
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BIMClashesIgnoredClashreportscannothelptheteamiftheyareignored.Theshoringmodelforamixedusecommercialprojectreportedclashesbetweentie-backsandthecitysanitarysewersystem.TheGCsuperintendentsignedoffwith“thefieldwillexposeandverifysewerpipelocations”.Tosavetimeandcosttheexplorationwasnotcompletedandtie-backdrillingwentthroughthesewer.Groutwaspumpedintothecitymainwhereithardenedandblockedflowdeepbelowcitystreets.SignificantcostsanddelayswereincurredbytheGCtoreplacethecitymain.
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LateArrivingBIMContent
Timecriticalinformationsuchasapprovedsubmittalsisneededtoproduceaccuratemodels.WhendesigndecisionsorapprovalsaredelayedtheBIMteammayhavetoproceedwithshopdrawingsusingpreliminaryinformation.Inthiscaseitisprudenttodocumentthesefactsshouldrelatedproblemsensueduringconstruction.Ahigh-risecourthousehad18floorswithexposedconcretedecksheatedwithin-slabpexpiping.Eachdeckhadakioskdirectoryboltedtotheslab.Locationsforthekioskswerenotapproveduntilafterthedeckswerepoured.Drilledinanchorsplacedbyfieldcrewspenetratedpexpipingonnearlyeveryfloor.Thedecksweresawcuttoexposeandrepairheatingpipeandthenre-poured.TheGCandsubssubmittedchangeordersfordelaysandaddedworkthatwerepaidbytheowner.
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BIMSolutionsNotTransferredtoFieldDrawingsOncetheBIMteamhascreatedthe“perfect”modeltheirworkisnotdone.Theymustusethemodeltodevelopfullycoordinatedfieldinstallationdrawings.IfadisconnecthappensatthispointthemoneyspentonBIMiswastedandfieldcrewsarelefttodiscovertheconflicts.Itbecomeseveryoneforthemselvesandtraditionalchangeordersystemsarewieldedtorecovercosts.IftheownerpaidforawellwrittenBIMExecutionPlan,thentheconstructionteamisresponsibletomakeitright.IftheBEPdoesn’texistorispoorlywrittenallpartiesareexposedtoriskandpotentialdisputesandclaims.Thesprinklercontractormodeledandcoordinateda3storysciencebuilding100%clashfree.Theshopfabricatedpipeandtheybeganfieldinstallation.Withinacoupleofdays,theirsuperintendentapproachedtheGCclaiming“othertradesarehitting40%ofmypipe!”Investigationshowedthatjobsitecrewswereworkingwithnon-coordinatedpermitsetdrawings.AninterviewwiththemodelerrevealedthattherewasnointernalcommunicationbetweenBIMandthefieldgroup.Whenaskedwhytheyhadgonetotheexpenseof3Dmodelingtheyanswered“itwasacontractualrequirement”.Thesprinklermodelwasproducedasrequiredbycontractbutclashfreeroutingwasnotusedtoupdatethefieldconstructiondrawings.Thesubboreallcostsforfieldmodifications.
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BIM technology is a great
advantage when used effectively.
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Here are
3 ways that
Basepin Solutions
can create
BIM success:
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1 EnabletheBIMTeamtoCreateaCollaborativeCultureBybringingprojectparticipantsintoonecentralsystem,ideasandsolutionsareshared,andallparticipantsbringvaluableknowledgeandexpertisetothebenefitofall.
Basepin’sapproachissimpleyetpowerful.
Basepinmethodologyandtechnologyempowersowners,designersandcontractorstobecometheprojectteam.Comingtogethercontractuallyandtechnologicallyhelpstheteamfocusoncollaborationandsuccess.BasepinprojectteamsworkwithinanintegratedBuildingInformationManagementSystemdesignedtomanageshareddigitalinformationandparticipantworkflow.
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2 UseBIMtoSupportJobsiteClaimResolutionWiththeuseofBIMgeometricspaceisreservedforeachtradesysteminstallationasagreeduponthroughasignatureSuperplotprocess.Projectparticipantsareprotectedagainstanycontractorswhomdeviatefromtheagreeduponspace,ordonotparticipatefully,resultinginaBIMFailure.
Basepinkeepseveryoneontrack.
Collaboratewiththeowner,architectandcontractortodevelopprojectcentricagreementsthatclearlyspellouttheroles,responsibilities,anddeliverablesforallparticipantsoftheBIMcoordinationteam.ReplacetraditionalinefficientpaperbasedchangemanagementsystemswithBIMfriendlyrulessuchasAIAE203G201DigitalDataandG202BIMprotocols.
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3 DriveBIMSuccessOutcomesBIMisapowerfultoolwiththepotentialtorevolutionizehowbuildingsarebuilt.Whenthingsdonotgoasexpectedwecanlearnandmakechangestofutureprojects.Basepin’sapproachistolookatallfactorsandcontinuallyimprovetheprocess.Thesearethecoreprinciplesthathavebeenimplementedonthemostsuccessfulprojects:
Basepinisretoolingtheindustry.
UseBIMtoolstoverifythatthedesigncanbebuiltspatiallypriortoprocurementofconstructioncontracts.DoingBIMwhilebuildingwillnotgetridofallimpactstothescheduleandmaystillincreasecostssincecontractsumshavebeenset.Varioussolutionscanbeusedtosupportthisgoalsuchas:
• productionofafullycoordinateddesignmodel• designteamassistsupportfromBIMcapableMEPF
contractors• blendeddesignteamofplanandspecconsultantsand
design-buildcontractors
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Letusknowhowwecanhelpmeetyourrequirements!
Contactustodiscussyourprojectneedsorgetaquote.Basepin,Inc.Kenmore,[email protected]