CROSS LAMINATED TIMBER - WoodWorks€¦ · cross-laminated timber (CLT) who want to take full advantage of its prefabricated, precise nature and potential for construction savings.

CROSS LAMINATED TIMBERBridgingtheDesigner-ManufacturerGap

PresentedBy:AllisonStandifordApril25,2017SeattleWoodSolutionsFair

Disclaimer:ThispresentationwasdevelopedbyathirdpartyandisnotfundedbyWoodWorksortheSoftwoodLumberBoard.

“TheWoodProductsCouncil”isaRegisteredProviderwithTheAmericanInstituteofArchitectsContinuingEducationSystems(AIA/CES),Provider#G516.

Credit(s)earnedoncompletionofthiscoursewillbereportedtoAIACESforAIAmembers.CertificatesofCompletionforbothAIAmembersandnon-AIAmembersareavailableuponrequest.

ThiscourseisregisteredwithAIACESforcontinuingprofessionaleducation.Assuch,itdoesnotincludecontentthatmaybedeemedorconstruedtobeanapprovalorendorsementbytheAIAofanymaterialofconstructionoranymethodormannerofhandling,using,distributing,ordealinginanymaterialorproduct.______________________________

Questionsrelatedtospecificmaterials,methods,andserviceswillbeaddressedattheconclusionofthispresentation.

COURSE DESCRIPTIONThispresentationisintendedforbuildingdesignersinterestedintheuseofcross-laminatedtimber(CLT)whowanttotakefulladvantageofitsprefabricated,precisenatureandpotentialforconstructionsavings.Unlikesometraditionalwoodproducts,interactionwiththeproductmanufacturer,onelementssuchas3Dbuildingmodelsandwholebuildingshopdrawings,isimportanttothedesignofasuccessfulCLTstructure.TopicswillincludeCLTdesignconsiderations,includingthoserelatedtocostefficiency,aswellasappropriatespans,thicknesses,applications,andspecifications.Thedesignteam/manufacturerrelationshipwillalsobeexamined,withanemphasisonwhatprojectteamscanexpectfromdesignthroughconstruction,informationrequiredbyeachparty,andappropriateoutputs(e.g.,drawings,calculations,specs).

LEARNING OBJECTIVES1.Explainbestpracticesfordesigningacross-laminatedtimber(CLT)buildingforcostefficiency,addressingitemssuchasspans,thicknessesandspecifications.2.DemonstratethetypicalinterfacebetweendesignteamandCLTmanufactureroncommercialandmulti-familyprojects.3.HighlightkeystosuccessfulCLTprojectdelivery,fromdrawingcoordinationtomaterialleadtime.4.Reviewmethodsofstreamliningthedesignteam’sinputonCLTprojects,focusingoncostefficiencyandschedulesavings.

•Reachouttoamanufacturerearlyandoften•Comeprepared•Understandthemanufacturer’scapabilities•Helpthemanufacturerunderstandyourneeds

SeeReference1

THE ORIGINAL INTENT OF CLT

• Lighter-weightreplacementforconcreteandsteel

• Fullyencased• InherentbeautyofCLT

SeeReference3SeeReference2

WE ARE ALL UNIQUE

SeeReference24

• Press size• Product certification

• Wood species• Layup options• Strength values

• Ply and panel thickness• Software• Services

WHEN SHOULD I REACH OUT TO A

MANUFACTURER?

EARLY CONCEPTUAL DESIGN

SeeReference3

YOUR PROJECT• WhatareyouconsideringusingCLTfor?

• Floors?• Walls?• Roof?• Elevatorshafts?

• WhatwillusingCLThelpyouachieve?

• Timeandlaborsavings?• Aesthetics?• Materialcostsavings?SeeReference5

PROJECT LOCATION

• Manufacturerlocation• Shipping• Logistics• Laborforce

SeeReference7

PROJECT LOCATION• Areyouinahighseismicarea?• Tornadoorhurricanepronearea?• Doyouhaveheavysnowloadtoconsider?

SeeReference9 SeeReference11

SeeReference10SeeReference8

CODE• Whatbuildingcodeisenforcedinthejurisdictionofyourproject?• HasCLTbeenusedinyourjurisdictionbefore?• AreyourcodeofficialsopentoapprovingCLT?

SeeReference12

ALTERNATE MEANS AND METHODS

WHEN?

HOW?

SeeReference3

SeeReference3

ALTERNATE MEANS AND METHODSStarMill:AmericanFork,Utah

• 2012IBCjurisdiction• CLTnotoutlinedintheIBC

• SmartLamprovided:• Engineeringreview• Paneldesign• Calculations• Shopdrawings• Connectiondetails

• NodeferredstampedsubmittalSeeReference3

ALTERNATE MEANS AND METHODS

• 2009IBC&AlternativeCLTlayup• Structural,certified3plySPF-S

TacomaAmtrakRoof- Tacoma,Washington

• Added4th layerofDF/Lveneer• Notacertifiedlayup

• ConfirmedwithAPAthatthislayupwaspermissible


PRODUCT CERTIFICATION• WhatisPRG-320andwhyis

thisimportant?• Doesyourprojectrequirea

productcertification?• Whatarethecertifiedlayups

andwhataretheymostcommonlyusedfor?

• Whatisthewoodspeciesofthemanufacturer’scertifiedproduct

SeeReference3

ANSI/APA PRG-320 CERTIFIED LAYUPS

3PlyALTConcentratedstrengthinthelongaxisLIGHTBEARINGANDNON-BEARINGWALLS

4PlyMAXXEqualstrengthinthebothaxes’WALLS/SHORTFLOORSPANS/TYPICALROOFSPANS

5PlyALTConcentratedstrengthinthelongaxisHEAVYBEARINGWALLS/SHORTFLOORSPANS/NORMALROOFSPANS

5PlyMAXXConcentratedstrengthinthelongaxisSHORTFLOORSPANS/NORMALROOFSPANS

7PlyALTConcentratedstrengthinthelongaxisLONGERFLOORSPANS/LONGERROOFSPANS

7PlyMAXXConcentratedstrengthinthelongaxisLONGERFLOORSPANS/LONGERROOFSPANS

9PlyALTConcentratedstrengthinthelongaxisLONGESTFLOORSPANS/LONGESTROOFSPANS

9PlyMAXXConcentratedstrengthinthelongaxisLONGESTFLOORSPANS/LONGESTROOFSPANS

FIRE• Whattypeofconstructionisyourbuilding?

• Residential?Commercial?Mixeduse?

• Whatfirerequirementswillyouneedtomeet?

• 1houror2hourratings?• Isafiretestorcertificationrequired?

• ASTME119orULlisting?• DoyouplantoleavetheCLTexposed?

FIRE

NationalDesignSpecification forWoodConstruction2015EditionChapter16

CLTDesignHandbook Chapter8Figure7

SeeReference14

SOUND

• HowdoIreachtherequiredSTCorIICratingsformyproject?

• Whattestinghasthemanufacturerdonethatisspecifictotheirproduct?

• Whatassemblyisbestforyourproject?

SOUND

• Codeminimum=“Notlessthan50,45iffieldtested”• AcceptableandPreferred• Labversusfieldtesting

• Labistypically3-5pointshigherthanfieldtesting

SeeReference17

UNDERSTANDING CLT COST

• HowdoIgetthemostbangformybuckwithCLT?• DecideearlythatCLTisthesystemthatwillaccomplishyourproject’sgoals

• Cleanjobsite• Fewerlaborcrews• Fasterschedule• Easeofinstallation• Foundationcostsavings• Reducedoreliminatedsoilimprovementcosts• Visualaesthetic• Useofsustainablematerials• Thermalperformancevalue• Energyefficiency


• HowdoIgetthemostbangformybuckwithCLT?(Cont.)• Pickamanufacturerthatchecksallofyourboxes

qPRG-320certificationqSFIChainofCustodycertified/FSCChainofCustodycertifiedqSoundtestingqFiretestingqWoodspeciesqServicesqLocationqLeadtime/Availabilitytoproduceanddeliveronyourtimeline

• Designforthatmanufacturer’smostefficientpanelsize


SeeReference27 SeeReference28 SeeReference29

• Wehavetochangethewaywethinkaboutestimating,buildingandthecostmodel• Understandingthebuildinglifecyclecostsasawholeratherthanacostpersquarefoot

• Developerbuildandholdversusthebuildandflipmodel• Eachprojectisuniqueandwillhavecostparameterstoinvestigate

EFFICIENCY AND COST • Largestpanelisa10’x40’panel• Mostefficientpanelisa10’x40’panel• Leastefficientisa6’x21’panel


EFFICIENCY AND COST

6’ x 21’

10’ x 40’

PROJECT SPECIFICATIONS

• Whatisrequiredfromthemanufacturertocomply?• IsthisaBuyAmericaActproject?• Livingbuildingchallengedeclared?• LEEDCertified,Silver,Gold,Platinum?• IsFSCcertificationrequired?

• WillyouacceptSFICoCcertification?

SeeReference21

SeeReference20

SeeReference19

SeeReference18

LEED POINTS WITH SFI CHAIN OF CUSTODY

• U.S.GreenBuildingCouncil• AlternateCompliancePathpilotprogram

• LEED2009• LEEDv4

• EnablesSFIcertifiedwoodandpaperproductstobeeligibleforLEEDcredit


SFICHAINOFCUSTODY• InordertocounttowardaLEEDpoint,theusermustfirstknowthat:

• 100%oftheforestproductsarefromlegal(non-controversial)sources

• 70%fromresponsiblesources• Theremaindermustbecertifiedsourcesasevidencedbyachainofcustodycertification(CoC)

LEEDv4“Sourcingofrawmaterials”credit


RESPONSIBLEEXTRACTION“SOURCING”CRITERIA• Useatleast25%(basedoncost)ofpermanentlyinstalledbuildingmaterialsthatmeetoneofthefollowingrequirements:

• ExtendedProducerResponsibility(EPR)• Bio-Basedmaterials• ReusedMaterials• WoodProducts- Sourcedfromcertifiedsources(SFICoC!)

DESIGN PROCESS

• Specificationsection• APAPRG-320productreport• Engineeringservices/Scope

• Connectiondetails• Paneldesign• Shopsreview

• Designassistance• Productsamples• Finishoptions,ifany• Leadtimeforproduction• Leadtimefordelivery SeeReference3

DESIGN PROCESS

• Clearlyidentifydeferredsubmittalrequirements

• DimensionedCLTplan• Panelschedule

• FinalCLTconnectiondetails• Paneltopanel• Paneltootherarchitecturalandstructuralelements

SeeReference3

DESIGN PROCESS

• Whatdocumentsandfileformatsarebest?• Entirearchitecturaland

structuraldrawingset• PDF• REVITfiles• CADfiles• 3Dmodel

SeeReference3

SHOPS DEVELOPMENT

• Coordinatingwithothertrades:• Glulammanufacturer• Steelfabricator• Mechanical/Electrical/Plumbing• Concrete- Extremelyimportant!

• Concretefoundationsmustbesquareandlevel

• Contractorperformsfoundationsurvey

• Asbuiltdimensions

SeeReference3

CNC MILLING

• Tolerances

• Capabilities

SeeReference3

SeeReference3

SHIPPING & LOGISTICS

• Legalloadversesover-dimensionalload

• Loadingsequence&installationsequence

• Pickingoffofthetruckorstagingonsite

• Truckholdingtime• Cranetime

SeeReference3

SHIPPING & LOGISTICS

• Manufacturerlocation• Shipping

• Over-dimensional• Stateescortfees• Policeescortfees

SeeReference7

INSTALLATION

SeeReference3 SeeReference3 SeeReference3

• Liftinghardwareoptions• Pickpointplacementcalculations

• Reducedlabor• Speedonsite

CASE STUDIES: Transportation Center

TransportationCenter

• Mainstructure• Walls,floors,roof,stairshafts,featurewalls

• 191totalCLTpanels

• BusCanopy• 44CLTpanels

CHALLENGES:• COMMUNICATION

• Manufacturerdidnothavedirectlineofcontacttodesignteam

• BuyAmericaAct• Transportationproject• BasisofdesignwasCanadian• U.S.manufacturerwasbroughtinlate• 9plycertifiedpanelspecifiedbutnotavailableintheU.S.atthistime

• Foundationissues• Woodspecies- Aesthetics


SeeReference3


RESULT:• COMMUNICATION• MultipleRFIs• ExtendedShopsdevelopmentphase

• Panelthicknesses• APAcertification• Foundation• Scheduledelays

SeeReference3

CASE STUDIES: Sliver Project, Tulsa

• Approx.54,000SF• 8Stories• CLTfloors,walls,roof• Designteamreachedouttoaspecificmanufacturerinearlyconceptualdesign

• Conductedanefficiencystudybasedonthemanufacturer’srecommendationsandcapabilities

• MaximizingpanelsizesminimizespressandCNCtime

SeeReference26

SeeReference26

CONCLUSION

• Reachouttoamanufacturerearlyandoften

• Comeprepared• Understandthemanufacturer’scapabilities

• Helpthemanufacturerunderstandyourneeds

SeeReference1

QUESTIONS?

AllisonStandifordArchitecturalSales&ProjectManagement

SmartLam,LLC.(406)892-2241

[email protected]

SeeReference24

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2. http://www.jpcarrara.com/products/hollowcore.aspx

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16. http://www.maxxon.com/acousti-mat_i/data

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22. My-Ti-ConLiftingGuide- Devloped byMy-Ti-ConTimberConnectors

23. http://www.different.com.mk

24. PhotocourtesypfGarcoConstruction

25. PhotcourtesyofDavidStahl,Principal, CunninghamGroupArchitecture, Inc.

26. http://wonderfulengineering.com

27. http://www.businessinsider.com/most-bizarre-bui ldings-around-the-wor ld-2016-1

28. http://www.architectmagazine.com/technology/detail/kaeng-krachan-elephant-park-shell_o

CROSS LAMINATED TIMBER - WoodWorks€¦ · cross-laminated timber (CLT) who want to take full advantage of its prefabricated, precise nature and potential for construction savings.

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