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TRANSCRIPT
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Presentedby:EastCarolinaUniversity
TerraconandRMF
BUILDING ENCLOSURE CXPhysicalSustainability’sNextReality
1HSWCreditsProviderNumber:J884CourseNumber:PBE001
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TerraconisaRegisteredProviderwithTheAmericanInstituteofArchitectsContinuingEducationSystems.
CreditearnedoncompletionofthisprogramwillbereportedtoCESRecordsforAIAmembers.Certificates
ofCompletionfornon‐AIAmembersareavailableonrequest.
TheprogramisregisteredwiththeAIA/CESforcontinuingprofessionaleducation.Assuch,itdoesnotincludecontentthatmaybedeemedorconstruedtobeanapprovalorendorsementbytheAIAofanymaterialofconstructionoranymethodormannerofhandling,using,distributingordealinginanymaterialorproduct.
Questionsrelatedtospecificmaterials,methodsandserviceswillbeaddressedattheconclusionofthispresentation.
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LEARNING OBJECTIVES UnderstandtheroleoftheBECxP intheCx processandhowthis
processenhancessustainability.
UnderstandwhyBECx isascriticalastraditionalMEPCx inachievingasuccessfulbuildingoutcomeforyourclient.
UnderstandhowBECx isastechnicallydrivenasprocessandexecutiondriven.
Understandhowhygrothermic modelingisbeingcoupledwithfunctionalperformancetestingtoquantitativelyandqualitativelyevaluatethebuildingenclosuresystems.
AUDIENCE POLL Backgrounds?
FamiliarwithBECx?
ImplementedBECxonprojects?
Beeninvolvedinfixingaleakybuilding?
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BUILDING ENCLOSURE COMPONENTSCommonComponents
Foundations
ExteriorBelowGradeWalls
ExteriorCladding
ExteriorCurtainwallsandStorefronts
ExteriorWindowsandDoors
Sealant,ControlJointsandFlashings
ShadingDevices
PlazaDecksandPlanters
RoofSystems
Skylights,etc.
AirBarriers
FallProtectionSystems
FUNCTION &PERFORMANCE
ThermalPerformance Air/Moisture/LightControl FireResistance AcousticalPerformance IndoorComfort StructuralIntegrity Security Aesthetics Maintainability/Sustainability EconomicallyViable
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PERFORMANCE THREATS
• JUNCTURES
• INTERFACES
• PENETRATIONS
• MOST PROBLEMS OCCUR AT
INTERSECTIONS OF
DIFFERENT MATERIALS
NON‐DESTRUCTIVE TESTING
PERFORMANCE THREATS
Plans don’t show the can light!
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PERFORMANCE THREATS
Moisture!
CONSEQUENCES
• 40%ofallnewroofsdevelopseriousproblemswithinoneyearofinstallationdueto.• 50%PoorWorkmanship• 20%PoorDesign• 15%PoorMaintenance• 10%MaterialFailures
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DESIGN FLAWS &CONSTRUCTION DEFECTS
UncontrolledAirandWaterIntrusion PrematureDeterioration BiologicalGrowth(Mold) PoorIndoorAirQuality IncreasedEnergyCosts DecreasedWorkerProductivity CostlyInvestigations/Repairs
STRUCTURAL DEFICIENCIES
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ENVIRONMENTAL POLLUTANTS
THE AH‐HAH MOMENT @THE EAST CAROLINAUNIVERSITY HEART INSTITUTE
AUGUST 27,2011
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IRENE AND THE HEART INSTITUTE
EAST CAROLINA UNIVERSITY HEART INSTITUTEAugust 27, 2011Hurricane Irene
2ND Floor – North Corridor2nd Floor –North Corridor-Interior Office
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EAST CAROLINA UNIVERSITY HEART INSTITUTEAugust 27, 2011Hurricane Irene
3rd Floor – North Corridor
4th Floor – North Corridor
EAST CAROLINA UNIVERSITY HEART INSTITUTEAugust 27, 2011Hurricane Irene
School of Dental Medicine
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THE AH‐HAH MOMENT
ArewecommissioningtheSODMEnvelope?
Laterfound,NO.Costwasbelievedtobetoohigh@$27,000.
Followingweek,BECx wasaddedtotheSODM.
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WHY NOT BECX?
Well‐recognizedMEPCx Benefits MEPsystemdesignsassumeproperlydesignedandinstalledBuildingEnclosureSystems Air/moisture/thermalcontrol HVACsystems
COMMISSIONING DEFINED*
Commissioningisthesystematicandqualitativeprocessofensuringthatbuildingsystemsandsubcomponentsaredesigned,installed,tested,andoperatedatoptimumefficiency.
Buildingcommissioninghasbecomethepreferredmethodofensuringthatbuildingsystemsareinstalledandoperatedtoperform asintended.
* Continuous Commissioning Guide Book U.S. Department of Energy
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COMMISSIONING DEFINED*
Aquality‐focusedprocessforenhancingthedeliveryofaproject.Theprocessfocusesuponverifyinganddocumentingthatthefacilityandallofitssystemsandassembliesareplanned,designed,installed,tested,operated,andmaintainedtomeettheOwner’sProjectRequirements.
* ASHREA Guideline 0
ofbuilding
* LEED - USGBC
BUILDING ENCLOSURE COMMISSIONING (BECX)
SustainableDesign
GreenBuildings:LEEDv4vs.LEED2009
UnderstandingTechnicalvs.Process
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LEED2009EA NodedicatedBECx Credits Innovationcredit1point
LEEDv4 Option2.BECx(2points): BECxisaprerequisiteinEnergyandAtmospherecategoryandmustbedoneifyouwantanycreditsinthiscategoryatall…categoryworth~20credits….
USGBCLEEDCERTIFICATION
2009 Systems Phases
EA Pre-Requisite • HVAC & Controls• Domestic Hot Water System• Lighting & Controls• Renewable Energy Systems
• Construction• Acceptance
EA Enhanced:(2 Points)
No additional systems, only additional services
• Design• Post Acceptance
GREEN BUILDINGS
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V4 Systems Phases
EA Pre-Requisite • HVAC & Controls• Domestic Hot Water System• Lighting & Controls• Renewable Energy Systems• Plumbing Pumps & Controls• Electrical Service & Distribution• Envelope (OPR & BOD only)
• Design• Construction• Acceptance
EA Enhanced:Option 1(3-4 Points)
No additional systems, only additional services
• Post Acceptance
EA Enhanced:Option 2(2 Points)
• Building Envelope • Design thru Post Acceptance
GREEN BUILDINGS
NewBuildingConstruction Commissioning Frompre‐designthroughoccupancy
ExistingBuildings Retro‐Commissioning Existing,never‐commissionedbuildingsRe‐Commissioning
Previouslycommissionedbuildings,butmodifiedorreprogrammedoveraperiodoftime
FORMS OF COMMISSIONING
ApplicabletobothMEP&BuildingEnvelope
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DesignReview
SubmittalReview
InstallationChecklists
ConstructionObservations
FunctionalTesting
AllApplicabletobothMEP&BuildingEnvelope
FORMS OF COMMISSIONING
~0.25%ofTotalConstructionCost
$1,000’s nowversus$1,000,000’slater
Justbricksandsticks…
Doesnotconsiderimpactcosts
COST OF BECX
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COST OF BECXBuilding / Project Name
Total Project
Cost
MEP CxCosts
BECxCosts
Envelope Issues?
Forensic Testing
School of Dental Medicine
$ 60 M $ 370 k $ 32 k No $0
Heart Institute $ 60 M $ 243 k Not Done Yes $58k
Health Sciences Building $ 61 M Not Done Yes $300k +
Gateway Residence Hall $ 58 M $ 323 k $ 64 k No $0
White Residence Hall $ 20 M $ 44 k No
Clement Residence Hall $ 20 M $ 30 k $ 60 k No
Student Union $ 122 M $ 537 k $ 181 k
Inputearly inthedesignphase.
Detaileddocumentationthroughouttheprojectphasesandbeyond.
Specifications,QualityControlrequirements,InstallationChecklists,FunctionalTestsandO&MTraining.
INCORPORATING COMMISSIONING
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DefinetheBECx Scope
MostBenefitforLowestCost DesignReview ConstructionObservations FunctionalTesting
WhatFunctionalTestsandHowMany
INCORPORATING COMMISSIONING
DesignProfessionalAgreements CA=ConstructionAdministration
Meeting&SiteInspections
Responsiveness!
ConstructionContracts ⇒Speci ications ForEachDiscipline
ConstructionPhaseCx Plan
INCORPORATING COMMISSIONING
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CommunicationsPlan
MostcriticalaspectofProject
Makeaplanforflowofcommunication
SticktothePlan
FailuretoCommunicate
IssueEscalation
Back‐upPlan
Designer,Contractor,CxA,OWNER
ActiveOwnerParticipation
INCORPORATING COMMISSIONING
HOW?– NUTS AND BOLTS MultipleDrawingandSpecificationreviews BackCheckandFollow‐upw/specificresolution– (InNextSet)
ProductSubmittalReviews Kick‐OffMeeting&MonthlyBECx Meetings ConstructionMonitoring ActionItemsLists Pre‐FunctionalChecklists
FunctionalPerformanceTesting AccordancewithProjectManual WitnessorSelf‐Perform
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WHAT IS HYGROTHERMICS? Hygricbehavior=Heat/Moisture Permanentlyincreasedmoisturecontentinthecomponentmayresultinmoisturedamage.
ThermalandHygricbehaviorofabuildingcomponentarecloselyinterrelated. Increasedmoisturecontentfavorsheatloss Thermalconditionaffectsmoisturetransport
WUFIPRO 5.2 Warme UndFeuchte Instationar(TransientHeatAndMoisture). TransientHygrothermal behaviorofmulti‐layerbuildingcomponents
Datavalidatedandderivedfromoutdoorandlaboratorytests
Canbeusedfor: Dryingtimeformasonryw/trappedmoisture Dangerofinterstitialcondensation Influenceofdrivingrain Effectsofrepairs Analyzeroofandwallsystemsindifferentclimatezones
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2005NISTStudy Thatcontinuousairbarriersystemscanreduceairleakagebyupto83%andprovidepotentialenergysavingsofgreaterthan40%forgasand25%forelectrical
WHY USEWUFI?
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WHY TEST? Qualitycontrolduringconstruction Complementsbuildingcommissioningprocess
Changesinbuildingfaçadetechnology–increasedperformancerequirements
Long‐termperformance– EnergyEfficiency Increasedexpectationofcomfort Increasedawarenessofdamagingeffectsofwater(mold,structuraldamage,lossofinsulative value)
ForensicAssessment(existingsystems,6+monthsold)
ASTM&AAMA
THE SPECIFICATION – OVERVIEW
Establishesexpectationsforinstallationandperformance
Includeslabtestdata Identifiesthetestingparadigm
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THE SPECIFICATION – PITFALLS
Testpressuresorallowableairleakagevolumes Flashing/tie‐intosurroundingbarriersystem Nodirectionon: Methodofspecimenselection Testspecimensize Testingschedule(i.e.whentotestinrelationtoinstallation) Nodirectiononnumberofteststoperform
AFTER THE TESTING ...
PassingTests:ConstructioncontinuesFailingTests:ConstructionStops! Diagnostictesting Removeandreinstallassemblies AdjustperformancecriteriaRetests
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HOW?‐ IMPLEMENTATION ActiveownershipfromOwner Rememberthemissionoftheinstitution
Whereistheline? HowmuchtestingdoIneed?
Hiddencoststoowner!! Disruptionsarepriceless…
Ownerhastoincludethecostinthebudget
Contractorhastobeapartnerintheprocess Threeleggedstool(Design,Construction,Cx)supportingtheOwner
Setformalcommunicationplanup‐frontw/escalationplan
ThisconcludestheAmericanInstituteofArchitectsContinuingEducationSystemsPrograms
Questions?