13 SEPTEMBER 2017 TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMS Disclaimer: This presentation was developed by a third party and is not funded by WoodWorks or the Softwood Lumber Board.
13SEPTEMBER2017
TIMBER-CONCRETECOMPOSITEFLOORSYSTEMS
Disclaimer:ThispresentationwasdevelopedbyathirdpartyandisnotfundedbyWoodWorksortheSoftwoodLumberBoard.
“TheWoodProductsCouncil”isaRegisteredProviderwithTheAmericanInstituteofArchitectsContinuingEducationSystems(AIA/CES),Provider#G516.
Credit(s)earnedoncompletionofthiscoursewillbereportedtoAIACES forAIAmembers.CertificatesofCompletionforbothAIAmembersandnon-AIAmembersareavailableuponrequest.
ThiscourseisregisteredwithAIACESforcontinuingprofessionaleducation.Assuch,itdoesnotincludecontentthatmaybedeemedorconstruedtobeanapprovalorendorsementbytheAIAofanymaterialofconstructionoranymethodormannerofhandling,using,distributing,ordealing inanymaterialorproduct.
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Questions relatedtospecificmaterials,methods,andserviceswillbeaddressed attheconclusionofthispresentation.
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
Manycommercial,mixed-useandmulti-familybuildingsutilizelong-spanfloorsystemsthatallowforopenandflexibleinteriorfloorplans.Competitivelong-spanfloorsystemsmadewithmasstimber-concretecompositepanelsareanopportunity toexpandtheuseofwoodframinginavarietyofoccupancyandbuildingtypes, includinghigh-rises.
Skidmore,Owings&Merrillhasbeenresearchingtimber-concretecompositefloorsystemsthatcansatisfythestructural,serviceability,acousticandfirerequirementsofhigh-risebuildingsandhasrecentlycompletedaphysicaltestingprogramwithOregonStateUniversity.
Thispresentationwillshowcasetheresults,includingtheeffectofshearconnectortypeoncompositeaction,two-wayspanningbehaviorofcompositetimberpanels,long-termbehaviors,andfull-scaleverificationofatypicallong-spanbay.
CourseDescription
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
1. Describetimber-concretecompositefloorsystemsandtheiruseinmodernmasstimberbuildings.
2. Reviewthestructuraldesignprinciplesandprocessesassociatedwithtimber-concretecompositefloorsystems.
3. Demonstratehowtimber-concretecompositefloorsystemscansatisfythestructural,serviceability,acousticandfirerequirementsofmid-riseandhigh-risebuildings.
4. Highlightresultsfromrecenttimber-concretecompositetesting,includingshearconnectortypes,two-wayspanningbehaviorandfullscaleverification.
LearningObjectives
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
CompositeStructures
STEEL CONCRETE
TIMBER
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
CompositeElements
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
CompositeElements
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
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CompositeBuildings
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
WhyComposite?
Strength Stiffness Mass Acoustics Fire
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
CompositeStructures
STEEL CONCRETE
TIMBER
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
Composite-Timber Systems
MadisonHouseTPP/SOM
WoodWorks Case Study of Bullitt CenterHSK / HBV PlatesSFS VB Screws
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
SOMTimberResearch
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
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Composite-Timber Advantage
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
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Cross-Laminated Timber(CLT)MadisonHouse
TPP/SOMMaterialAdvantages
•Prefabricated-Reducedon-sitelabor-Speedofconstruction-Non-structuralsystems
•Lightweight-ReducedSeismicLoads-Foundationsavings
•Thermalinsulator-FireResistant-Energysavings
•Marketingadvantages-Aesthetics-SustainabilityStructurlam Crosslam
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
SpanLimits (Strength &Stiffness) – Structurlam Crosslam
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
Acoustics– FloorAssemblies – USCLTHandbook
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
FireResistance – FailureModes– USCLTHandbook
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
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FireResistance – Integrity Failures – USCLTHandbook
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
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CombinedAcoustic/Fire/Structural Solution
Reinforced concrete toppingslabforseismicdiaphragm,increasedspans,acoustic, andfireresistance.
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
WhyComposite-Timber?
Strength Stiffness Mass Acoustics Fire
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
CompositeConcreteToppingSlabs
AcousticsFireResistanceSpan LengthSeismic DiaphragmDurability
SOMTestSpecimensatOregonStateUniversity
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
CreatingHigh-Quality Space
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
DesignMethodology forCompositeCLTFloors
1. CalculatesectionalpropertiesofCLT(EIeff,EAeff)perUSCLTHandbook,NDS,other
2. Selectcompositefastenertype,determineslipstiffness(Ks)perManufacturer
3. CalculateeffectivecompositestiffnessperAnnexBofEurocode5(EN,2004)
4. Calculateapparentstiffnessormodelrollingshearstiffnesslosses
5. Calculateserviceabilityandultimatelimitstatesandevaluate,redesign
Note:FloorSystemsMostLikelyGovernedbyStiffness
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
1.CLTProperties – USCLTHandbook
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
1.CLTProperties – USCLTHandbook
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
2.CompositeConnectorProperties - Manufacturer
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
2.CompositeConnectorProperties - Manufacturer
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
3.CompositeProperties - Eurocode5,AnnexB
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
3.CompositeProperties - Eurocode5,AnnexB
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
3.CompositeProperties - Eurocode5,AnnexB
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
3.CompositeProperties - Eurocode5,AnnexB
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
3.CompositeProperties - Eurocode5,AnnexB
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
4.ApparentStiffnessorModel– USCLTHandbook
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
5.CalculateLimitStates&EvaluateDesign
1. Stiffness– Deflection&Vibrations
2. CompositeConnectorCapacity
3. Maximumwood,concrete,andrebarstresses
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
DesignMethodology forCompositeCLTFloors - Recap
1. CalculatesectionalpropertiesofCLT(EIeff,EAeff)perUSCLTHandbook,NDS,other
2. Selectcompositefastenertype,determineslipstiffness(Ks)perManufacturer
3. CalculateeffectivecompositestiffnessperAnnexBofEurocode5(EN,2004)
4. Calculateapparentstiffnessormodelrollingshearstiffnesslosses
5. Calculateserviceabilityandultimatelimitstatesandevaluate,redesign
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
Testing atOregonStateUniversity
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
• ConnectorTypes• 7testsofshearconnectors• 2bareCLTcontroltests
• Bi-DirectionalStiffness• 3testsoftwo-way&positive-negativebending
• LongTermCreep• 2testsofpositiveandnegativecreep(4monthlongeach)
• FullScaleTest,8ftWidex36ftLong
OSUTestingProgram
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
ConnectorTests
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
ConnectorTest– SimpleSpan,PositiveBending
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
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ConnectorTestResults
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
ConnectorTestResults
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
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Orthotropic Stiffness Testing
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
Orthotropic Stiffness Testing
West
12 in.
88 in.
4 in.2.25 in. Concrete slab
2 in. roller
5 ply CLT
W30x311
W14x176
W14x145
Strong Floor
Servo-hydraulic Actuator
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
Orthotropic Stiffness Testing
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
Orthotropic Stiffness Results
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
Orthotropic Stiffness Results
Ks,strongaxis=16kN/mmKs,weakaxis=2kN/mm
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
LongTermCreep&ShrinkageTest
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
LongTermCreep&ShrinkageTest
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
LongTermCreep&ShrinkageResults
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
FullScaleTest
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
FullScaleTest
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
FullScaleTest
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
FullScaleTest
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
FullScaleTest
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
FullScaleTest
• Failureat82,000lbs• Failureload~8xthedesign load• Equivalentbendingmoment to600psfuniform load.
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
Analysis ofFullScaleTest
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
FullScaleTest
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
FullScaleTest Results
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
FullScaleTest Results
Maximumserviceload
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
FullScaleTest Results
Maximumserviceload
Continuous beamcompositestiffness
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
FullScaleTest Results
Maximumserviceload
Continuous beamcompositestiffness
Simplebeamcompositestiffness
TIMBER-CONCRETE COMPOSITE FLOOR SYSTEMSSKIDMORE, OWINGS & MERRILL LLP
WOODWORKS WEBINAR13 SEPTEMBER 2017
FullScaleTest Results
Maximumserviceload
Continuous beamcompositestiffness
Simplebeamcompositestiffness
Simplebeamnon-compstiffness
1. Thecompetitivenessofstructuralsystemsisaffectedgreatlybythecharacteristicsofthefloor framingsystem.
2. Compositeconcretetoppingslabsareaneffectivewaytoimprove thestrength, stiffness,acousticinsulation, andfireresistanceofCLTfloorplanks.
3. Thecompositebehaviorisaffectedgreatlybythecompositeconnectorselected.Adhesiveconnectorsperformed betterthanmechanical.
4. Compositebehaviorcanbeachievedfornegativebending andcompositeconcreteconnections.
5. Compositebehaviorcanenhancetwo-waybendingbehavior, furtherimproving thespanning capabilitiesofthefloor system.
Conclusions