Post on 30-Sep-2020
EmilyEmily CouricCouric ClinicalClinicalEmily Emily CouricCouric Clinical Clinical Cancer CenterCancer Center
University of VirginiaUniversity of VirginiaCharlottesville, VACharlottesville, VA
Brittany Brittany MuthMuthConstruction Management Construction Management
GilbaneGilbane Building Co. Building Co.
OutlineOutline
BackgroundBackgroundBackgroundBackgroundSolar PanelsSolar Panels•• Electrical BreadthElectrical BreadthBIM BIM for Façadefor FaçadePrefabricationPrefabrication•• Mechanical BreadthMechanical BreadthConclusionsConclusionsQuestionsQuestions
IntroductionBackgroundSolar Panels• Electrical
Breadth
Building Statistics:Building Statistics:•• 154,000 SF154,000 SF
BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
•• 5 floors + penthouse5 floors + penthouse•• $74 million $74 million •• Outpatient diagnostic Outpatient diagnostic
and treatment centerand treatment centerA 2008A 2008 D 2010D 2010•• Apr. 2008 Apr. 2008 –– Dec. 2010Dec. 2010
•• DesignDesign--BidBid--BuildBuild
IntroductionBackgroundSolar Panels• Electrical
Breadth
Architecture:Architecture:•• Consolidate existing services into Consolidate existing services into
BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
one buildingone building•• Offices, exam rooms, linear Offices, exam rooms, linear
accelerators, radiation/oncologyaccelerators, radiation/oncology•• 44thth floor expansionfloor expansionpp•• Entrance LobbyEntrance Lobby
IntroductionBackgroundSolar Panels• Electrical
Breadth
Mechanical System:Mechanical System:•• All air, local reheat in All air, local reheat in
Electrical System:Electrical System:•• 23 local 23 local
BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
each roomeach room•• 4 main AHU’s4 main AHU’s•• 288 air terminal units288 air terminal units
transformerstransformers•• 83 panel boards83 panel boards•• 65 different light 65 different light
fixtures,fixtures,fixtures, fixtures, fluorescent fluorescent
IntroductionBackgroundSolar Panels• Electrical
Breadth
Building Envelope:Building Envelope:•• Brick veneer, stone, and curtain wallBrick veneer, stone, and curtain wall
EPDM i lEPDM i l l f b /l f b /BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
•• EPDM singleEPDM single--ply roof membrane w/ ply roof membrane w/ white acrylic coatingwhite acrylic coating
•• Roof gardenRoof garden
IntroductionBackgroundSolar Panels• Electrical
Breadth Possible Limitations:Possible Limitations:
BIM for Façade ConstructionBIM for Façade Construction
BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
•• Learning curveLearning curve•• TechnologyTechnology•• ExperienceExperiencePossible Benefits:Possible Benefits:•• Quicker constructionQuicker construction•• Better coordinationBetter coordination•• Shorter scheduleShorter schedule
IntroductionBackgroundSolar Panels• Electrical
Breadth
Survey Results:Survey Results:•• Increase Increase
BIM for Façade ConstructionBIM for Façade Construction
6060
7070
8080
BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
Constructability?Constructability?•• YesYes
•• Structural analysisStructural analysis•• CoordinationCoordination 2020
3030
4040
5050
6060
•• DetailsDetails 00
1010
Strongly Strongly DisagreeDisagree
DisagreeDisagree NeutralNeutral AgreeAgree Strongly Strongly AgreeAgree
IntroductionBackgroundSolar Panels• Electrical
Breadth
Survey Results:Survey Results:•• Increase Productivity?Increase Productivity?
BIM for Façade ConstructionBIM for Façade Construction
6060
7070
BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
•• YesYes•• CommunicationCommunication•• Plan executionPlan execution
1010
2020
3030
4040
5050
00
1010
Strongly Strongly DisagreeDisagree
DisagreeDisagree NeutralNeutral AgreeAgree Strongly Strongly AgreeAgree
IntroductionBackgroundSolar Panels• Electrical
Breadth
Survey Results:Survey Results:•• Beneficial for Façade Beneficial for Façade
BIM for Façade ConstructionBIM for Façade Construction
6060
7070
8080
BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
Analysis/ Analysis/ Coordination?Coordination?
•• YesYes•• Quantifying materialsQuantifying materials 2020
3030
4040
5050
6060
Q y gQ y g•• Understanding water Understanding water
infiltration and infiltration and energy lossenergy loss
00
1010
Strongly Strongly DisagreeDisagree
DisagreeDisagree NeutralNeutral AgreeAgree Strongly Strongly AgreeAgree
IntroductionBackgroundSolar Panels• Electrical
Breadth
Survey Results:Survey Results:•• Learning curve = Learning curve =
BIM for Façade ConstructionBIM for Façade Construction
5050
6060
BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
negative affects?negative affects?•• NoNo
•• Find right peopleFind right people1010
2020
3030
4040
00
1010
Strongly Strongly DisagreeDisagree
DisagreeDisagree NeutralNeutral AgreeAgree Strongly Strongly AgreeAgree
IntroductionBackgroundSolar Panels• Electrical
Breadth
Survey Results:Survey Results:•• Reduce cost of façade Reduce cost of façade
BIM for Façade ConstructionBIM for Façade Construction
5050
6060
BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
construction?construction?•• NeutralNeutral
•• Saves on errorsSaves on errors•• Increase in Increase in 1010
2020
3030
4040
productivityproductivity 00
1010
Strongly Strongly DisagreeDisagree
DisagreeDisagree NeutralNeutral AgreeAgree Strongly Strongly AgreeAgree
IntroductionBackgroundSolar Panels• Electrical
Breadth Survey Results:Survey Results:
BIM for Façade ConstructionBIM for Façade Construction
BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
Survey Results:Survey Results:•• Most difficult parts:Most difficult parts:
•• Level of detailsLevel of details•• TrainingTraining
SubcontractorsSubcontractors
•• Most beneficial parts:Most beneficial parts:•• Increase field productivityIncrease field productivity•• Managing costsManaging costs•• CoordinationCoordination•• SubcontractorsSubcontractors •• Coordination Coordination
IntroductionBackgroundSolar Panels• Electrical
Breadth Conclusion:Conclusion:
BIM for Façade ConstructionBIM for Façade Construction
BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
•• Use for mock upsUse for mock ups•• Not for complete modelNot for complete model
IntroductionBackgroundSolar Panels• Electrical
Breadth
Prefabrication of Brick FacadePrefabrication of Brick Facade
Advantages:Advantages: Disadvantages:Disadvantages:BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
•• Shorter scheduleShorter schedule•• Better qualityBetter quality•• Possibly cheaperPossibly cheaper•• constructabilityconstructability
•• Possibly more expensivePossibly more expensive•• StorageStorage
yy
IntroductionBackgroundSolar Panels• Electrical
Breadth
Prefabrication of Brick FacadePrefabrication of Brick Facade
Brick Facade:Brick Facade:BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
•• Area = 33,472 SFArea = 33,472 SF•• Schedule = 244 daysSchedule = 244 days•• Original cost = $1.8 Original cost = $1.8
millionmillion
IntroductionBackgroundSolar Panels• Electrical
Breadth Materials:Materials:BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
•• 8” CMU Backup8” CMU Backup•• 2” Insulation2” Insulation•• Mortar NetMortar Net•• WeepsWeepspp•• Brick VeneerBrick Veneer
IntroductionBackgroundSolar Panels• Electrical
Breadth
Materials Excluded with Materials Excluded with Prefab:Prefab:
BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
•• Mortar NetMortar Net•• WeepsWeeps•• Air CavityAir Cavity•• Steel PlatesSteel Plates•• CMU BackupCMU Backup
IntroductionBackgroundSolar Panels• Electrical
Breadth
Thin Brick Prefab System:Thin Brick Prefab System:•• Cold formed structural stud: Cold formed structural stud:
6" 16 6" 16 ga.ga. 11--5/8" @ 16" 5/8" @ 16" o.co.c..•• 5/85/8"" sheathingsheathingBIM for Façade
Prefabrication• Mechanical
BreadthConclusionsQuestions
•• 5/85/8 sheathingsheathing•• WP membraneWP membrane•• ZZ•• 5/85/8" " sheathingsheathing•• LathLathLathLath•• Scratch coatScratch coat•• LaticreteLaticrete•• Thin Thin brickbrick
IntroductionBackgroundSolar Panels• Electrical
Breadth
Prefabrication of Brick FacadePrefabrication of Brick Facade
New Advantages:New Advantages:Sh t h d lSh t h d l
New Disadvantages:New Disadvantages:BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
•• Shorter scheduleShorter schedule•• Better qualityBetter quality•• No air cavity, no leaksNo air cavity, no leaks•• ConstructabilityConstructability
•• More expensiveMore expensive
IntroductionBackgroundSolar Panels• Electrical
Breadth
Prefabrication of Brick FacadePrefabrication of Brick Facade
Panel Calculations:Panel Calculations:’ ’’ ’ SS30’ 7’BIM for Façade
Prefabrication• Mechanical
BreadthConclusionsQuestions
•• Panel Area = 30’ x 7’Panel Area = 30’ x 7’ = 210 SF= 210 SF
•• # of panels = 33,472 SF / 210 SF= # of panels = 33,472 SF / 210 SF= 159 panels159 panels
30 7
•• Days = 159 panels / 8 panels per Days = 159 panels / 8 panels per day = 20 daysday = 20 days
IntroductionBackgroundSolar Panels• Electrical
Breadth
Prefabrication of Brick FacadePrefabrication of Brick Facade
Comparison:Comparison:BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
•• Original:Original:•• Cost = $1.8 millionCost = $1.8 million•• Schedule = 244 daysSchedule = 244 days
•• Prefabricated:Prefabricated:•• Cost = $3.2 millionCost = $3.2 million•• Schedule = 178 daysSchedule = 178 days
IntroductionBackgroundSolar Panels• Electrical
Breadth
Prefabrication of Brick FacadePrefabrication of Brick Facade
Conclusion:Conclusion:•• Too expensiveToo expensiveBIM for Façade
Prefabrication• Mechanical
BreadthConclusionsQuestions
•• Too expensiveToo expensive•• Not a fast track scheduleNot a fast track schedule
IntroductionBackgroundSolar Panels• Electrical
Breadth
Mechanical BreadthMechanical Breadth
Original Wall Properties:Original Wall Properties:•• RR value = 10 63value = 10 63
Prefab Wall Properties:Prefab Wall Properties:•• RR value = 13 28value = 13 28BIM for Façade
Prefabrication• Mechanical
BreadthConclusionsQuestions
•• RR--value = 10.63value = 10.63•• UU--value = 0.094value = 0.094•• Thickness = 16”Thickness = 16”
•• RR--value = 13.28value = 13.28•• UU--value = 0.075value = 0.075•• Thickness = 11”Thickness = 11”
IntroductionBackgroundSolar Panels• Electrical
Breadth
Mechanical BreadthMechanical BreadthHeat Loss:Heat Loss:•• Original DesignOriginal Design
BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
Original DesignOriginal Design•• 176,384 BTU/HR176,384 BTU/HR
•• Prefab DesignPrefab Design•• 141,145 141,145 BTU/HRBTU/HR•• 19 9% better19 9% better•• 19.9% better19.9% better
IntroductionBackgroundSolar Panels• Electrical
Breadth
Mechanical BreadthMechanical Breadth
Conclusion:Conclusion:•• Prefab has betterPrefab has betterBIM for Façade
Prefabrication• Mechanical
BreadthConclusionsQuestions
•• Prefab has better Prefab has better mechanical propertiesmechanical properties
•• Still too expensiveStill too expensive
IntroductionBackgroundSolar Panels• Electrical
Breadth
ConclusionsConclusions
•• Solar panels not economicalSolar panels not economicalBIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
pp•• BIM should have been used BIM should have been used
for mockupsfor mockups•• Prefab definitely shortens the Prefab definitely shortens the
schedule and adds qualityschedule and adds qualityschedule and adds quality, schedule and adds quality, but too expensivebut too expensive
IntroductionBackgroundSolar Panels• Electrical
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AcknowledmentsAcknowledmentsUniversity of University of Virginia:Virginia:•• Fred DunnFred Dunn•• Jeff MooreJeff Moore•• Dee Dee EadieEadie
GilbGilb B ildi CB ildi C
Clark Clark NexsonNexson•• Jonathan Jonathan WalkerWalker
BIM for FaçadePrefabrication• Mechanical
BreadthConclusionsQuestions
GilbaneGilbane Building CompanyBuilding Company•• Mike Mike PoulinPoulin, Project Executive, Project Executive
ISEC, Inc.:ISEC, Inc.:•• Matt Matt HeistandHeistand•• Paul Paul HarschHarsch
Davis Davis ConstructionConstruction
Balfour Balfour BeattyBeatty
Jacobs Jacobs EngineeringEngineering
UnitedUnited States Army CorpsStates Army Corps EngineersEngineers•• Jim Jim McAllisterMcAllister
Eastern Exterior Wall Systems Inc.:Eastern Exterior Wall Systems Inc.:•• Wayne MartinWayne Martin
United United States Army Corps States Army Corps EngineersEngineers
The The Pennsylvania State University:Pennsylvania State University:•• FacultyFaculty
Questions?Questions?