1 HSW Credits Provider Number: J884 Course Number: · PDF file1 HSW Credits Provider Number:...

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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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t1 test, 8/3/2015

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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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TheAh‐hahMoment‐ Irene

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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?