This Program Registered - WoodWorks
Transcript of This Program Registered - WoodWorks
TheCase forCross LaminatedTimber: Part 1O t iti dOpportunities andChallenges for a NewClass ofTimber Product
Presented on [Date] by [Author’s Name](Edit the Master Slide to change this text)
Presented byRegional DirectorWoodWorks for Non residential Construction
This Program is Registered with theAIA
Wood Products Council is a Registered Provider withThe American Institute of
g g
g fArchitects Continuing Education Systems. Credit earned on completion of thisprogram will be reported to CES Records for AIA members. Certificates ofCompletion for non AIA members are available on request.
This program is registered with theAIA/CES for continuing professionaleducation. As such, it does not include content that may be deemed or
t d t b l d t b th AIA f t i l fconstrued to be an approval or endorsement by theAIA of any material ofconstruction or any method or manner of handling, using, distributing, ordealing in any material or product. Questions related to specific materials,methods and services will be addressed at the conclusion of thismethods, and services will be addressed at the conclusion of thispresentation. Registration no. 1
LearningObjectives
1. Review completed CLT projects that demonstrate a range ofp p j gapplications and system configurations.
2. Discover howCLT can be used under current and future buildingcodes and standardscodes and standards.
3. Discuss benefits of using CLT in place of concrete and steel, includingstructural versatility, prefabrication, lighter carbon footprint andreduced labor costs.
4. Discuss the fire characteristics of CLT, including the benefits ofcharring current seismic approaches that can be used for CLTcharring, current seismic approaches that can be used for CLTbuildings, and how the acoustic andmoisture performance of CLTassemblies can inform the design of a project.
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distribution, display and use of the presentationwithout written permission of the speaker is
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©Th W d P d t C il©TheWood Products Council 2012
Outline
• What is CLT?
• Definitions• The appeal• History• Availability
• UsingCLTg
• Project Examples• Best applications
C ff i d i• Cost effective design• BuildingCodes and Standards
Outline
• What is CLT?
• Definitions• TheAppeal• History• Availability
• UsingCLTg
• Project Examples• Best applications
C ff i d i• Cost effective design• BuildingCodes and Standards
MassTimber – NewClass ofWood Product What is MassTimber?
MassTimber is loosely defined as…y• Utilizing smaller dimension trees
• Incorporating timber plate elements
• Including large timber elements such as LVL LSL glulam andCLT• Including large timber elements such as LVL, LSL, glulam, andCLT
• A structural system resisting both vertical and lateral loads
Themass timber movement is motivated by….• Demand for lower impact structures
• ManufacturingTechnologyManufacturingTechnology
• MaterialTechnology
• Advances in Pre fabrication
S hi ti t d S li• Sophisticated Suppliers
What is Cross LaminatedTimber (CLT)?
• Layers of dimension lumber stacked crosswise and glued on theirwide faces. Adhesives follow requirements of Glulam beams.
• Width and thickness of laminations vary (2.4 9.5” wide, 5/8 2” thick)• Lumber is ~12%MC prior to manufacture,
• Two way slab with odd number of layers identifyingy y y gprimary strength direction.
• Manufactured panels are typically 8 10’ wide andup to 20” thick and up to 64’ long.
• Finished panels are planed, sanded,cut to size.Then openings are cutwith precise CNC routers.
• Third party inspection at factory.
• Custom engineered formaterial efficiency.material efficiency.
• Custom designed forproject.
How to use CLT Assembly
Source: NORDIC Cross LaminatedTimber Connection Details
How to use CLT Assembly How to use CLT – Single Span Floor
Source: StructurlamCLT guide
What is the appeal of CLT?
S b l • EmbodiedCarbonSustainability
Performance
ConstructionEfficiency
Reduced Embodied CarbonVolume of wood used 950 m3
Carbon sequestered and
Reduced Embodied Carbon
stored (CO2e) 760 metric tons
Avoided greenhousegases (CO2e) 320metric tons
Total potential carbonbenefit (CO2e) 1,080 metric tons
Carbon savings from the choice of wood inCarbon savings from the choice of wood inthis one building are equivalent to:
1,615 passenger vehicles off thed froad for a year
Enough energy to operate ahome for 803 years
Stadhaus, London, UKArchitect:WaughThistletonArchitectsPhoto credit:WaughThistletonArchitects
What is the appeal of CLT?
• Reduced EmbodiedCarbonS b l • Reduced EmbodiedCarbon• Minimal waste productionSustainability
Performance
ConstructionEfficiency
MinimalWasteMinimalWaste
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Why are designers drawn toCLT?
• Reduced EmbodiedCarbonS b l • Minimal waste production
• Highly Energy EfficientSustainability
Performance
ConstructionEfficiency
Energy EfficientEnergy Efficient
What is the appeal of CLT?
• Reduced EmbodiedCarbonl dS t i bilit • Minimal waste production
• Highly Energy EfficientSustainability
• Disaster ResilientPerformance Disaster ResilientPerformance
ConstructionEfficiencyEfficiency
Disaster ResilientDisaster Resilient
What is the appeal of CLT?
• Reduced EmbodiedCarbonl dS t i bilit • Minimal waste production
• Highly Energy EfficientSustainability
• Disaster ResilientPerformance • Good Fire ResistancePerformance
ConstructionEfficiencyEfficiency
Good Fire ResistanceGood Fire Resistance
4.5 in
6.9 in
6 9 in
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6.9 in
9.6 in
What is the appeal of CLT?
• Reduced EmbodiedCarbonl dS t i bilit • Minimal waste production
• Highly Energy EfficientSustainability
• Disaster Resilient• Good Fire ResistancePerformance Good Fire Resistance• High performingAcoustics
Performance
ConstructionEfficiencyEfficiency
High PerformingAcousticsHigh PerformingAcoustics
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Why are designers drawn toCLT?
• Reduced EmbodiedCarbonl dS t i bilit • Minimal waste production
• Highly Energy EfficientSustainability
• Disaster Resilient• Good Fire ResistancePerformance • High performingAcoustics• Structural Flexibility
Performance
ConstructionEfficiencyEfficiency
Structural FlexibilityStructural Flexibility
What is the appeal of CLT?
• Reduced EmbodiedCarbonb l • Minimal waste production
• Highly Energy EfficientSustainability
• Disaster Resilient• Good Fire Resistance• High performingAcousticsPerformance High performingAcoustics• Structural Flexibility
• ~75% lighter than concreteConstructionEfficiency
75% LighterWeightThanConcrete75% LighterWeightThanConcrete
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What is the appeal of CLT?
• Reduced EmbodiedCarbon• Minimal waste productionSustainability • Minimal waste production• Highly Energy Efficient
Sustainability
• Disaster Resilient• Good Fire Resistance• High performingAcousticsPerformance• Structural Flexibility
• ~75% lighter than concrete• Reduced construction time
ConstructionEfficiency
Reduced ConstructionTimeReduced ConstructionTimeStadhaus, LondonUK
• 8 stories of CLT over 1• 8 stories of CLT over 1story concrete podium
• 9 stories built in 9weeks ( 1/2 the timeweeks (~1/2 the timeof precast concrete)
NorwichAcademy,NorwichUK
f• 102,300 ft2 3 storysecondary school
• 17 weeks to construct
What is the appeal of CLT?
• Reduced EmbodiedCarbonMi i l t d tiSustainability • Minimal waste production
• Highly Energy EfficientSustainability
• Disaster Resilient• Good Fire Resistance• High performingAcousticsPerformance• Structural Flexibility
• ~75% lighter than concrete• Reduced construction time• Pre fabricated and Precise
ConstructionEfficiency
Pre fabricated and PrecisePre fabricated and Precise
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CLT HistoryTimeline• 2010 – 1st2010 1
Production• 2011 PRG320• 2011 Canadian
Handbookca Handbook• 2013 –US
Handbookinterestbegan
Recognizedin 2015 IBC
Nor
th
Am
eric
1990 2000 2005 2010 2015
N A
1990 2000 2005 2010 2015
SignificantlyAustriape increased usein Europe
.3millionm3
of built CLTprojects
industryacademia joint
research
.6 1millionm3 of builtCLT projectsE
urop
Outline
• What is CLT?M Ti b• MassTimber
• TheAppeal• HistoryHistory• Availability
• UsingCLTg• Project Examples• Best applications• Cost effective design• BuildingCodes and Standards
Tour of CLT Projects –TheWorld
UK Sweden Germany Australia
UK Italy France
Stadhaus London UK
• Completed in 2009• 8 stories of CLT over 1
concrete Stadhaus, London, UKArchitect:WaughThistletonArchitectsPhoto credit:WaughThistletonArchitects
concrete• Entire structure is CLT
FrequentlyAskedQuestions:
1. How are MEP Systems accommodated with CLT?.
• Rout and bore the panel to take the electrical conduit, plumbingpipes andmechanical chases.This can be done on site withtraditional carpentry tools or in the factory using CNC technology,but the latter would require more coordination and would increasethe cost of the product.
h ll d h l k l b h• Fur the wall out to accommodate MEP.This is likely to be the morecommonmethod in NorthAmerica based on our building practicesand need to satisfy sound insulation requirements.
• Completed in 2010• 3 stories
f• > 102K sqft• 2700 tons of CO2
stored = 10 years ofyoperational energy
• 17 weeks to construct
NorwhichOpenAcademy, Norfolk EnglandDesignTeam: Sheppard Robson, Romboll uKPhoto credit: KLH
• Completed in 2008• 4 buildings• 4 buildings• 8 stories• 78 ft. tall7• > 115K sqft..• 134 units
Limnologen,Vaxjo, SwedenArchitect:Arkitekbolaget, Kronoberg, Martinsons
• 180K sqft• Luxury Hotelu u y ote• Construction time
was 3 mo. vs. 2 yr.w/ concretew/ concrete
• Wall system was2” thinner withCLT
Aqualux Hotel, Bardolino, ItalyArchitect: RamaArchitettura
CLT
• Completed in 2011• 8 stories• 82 ft.
f• ~12K sqft..• 13 units
Schankula H8, BadAibling,GermanyArchitect:Arthur Schankula
• ElementarySchool
• Supportedgreen roof
• CLT covered byd l ddwood cladding
• > 65K sqft
Paul Chevallier School, Lyon, FranceArchitect:Techtoniques
• Completed in 2012• 10 stories
0 ft tall > 8 6 K sqft• ~ 105 ft. tall, > 18.6 K sqft.• 3 million in R&D• Poor soils required a muchPoor soils required a much
lighter building
Forte’,Victoria Harbor, Melbourne,AustraliaArchitect: Lend Lease
Forte’,Victoria Harbor, Melbourne,AustraliaArchitect: Lend Lease
Tour of CLT Projects – NorthAmerica
Vancouver, BC Alberta, ON Whitefish, MTSacramento,
CA
Elkford, BC ChibougamauQU
Fitchburg, WI
UBC Bioenergy Research & Demo,Vancouver, BC, CanadaDesignTeam:
• SIP andCLT System• ExposedCLT• Uses pine beetle kill CLT• Tallest all is 23 ft• Tallest wall is 23.5 ft.
Elkford Lodge, Elkford, BC, CanadaDesignTeam: Douglas Sollow,Associated Engineering, AHC
FrequentlyAskedQuestions:
1. How are MEP Systems accommodated with exposedCLT?.
• Fur out a wainscoting on the lower half ofthe wall
• Run the conduit, pipes and chases on theface of the CLT and use it as an exposedarchitectural element.dd k f d ll h• Add stick framed partition walls on the
interior of the structure• Create a drop ceiling to conceal• Gap the CLT panels to accommodate• Gap the CLT panels to accommodate
plumbing andmechanical and add a thinfaux panel on the face.
• Create a built up floor on top of the CLTCreate a built up floor on top of the CLTfloor deck to accommodate MEP
• Completed 2013• Largest NACLT Project
FortMcMurryAirport, Alberta, CanadaArchitect: McFarlane + BiggarArchitects
• 170K sqft• 50% pine beetle kill pine
• 1st NAmulti family CLTproject
K ft• 170K sqft• 50% beetle kill pine
Multi family, Chibougamau,Quebec, CanadaPhoto: Nordic EngineeredWood
• 1st Commercial CLT “Building” in US• $145/sqft completed project cost• Structural shell complete in < 5 days• Saved 30% in foundation costs
Long Hall,Whitefish, MTDesigner: Darryl Byle, Jason Hatten
• Saved 6 12% over CMU
• Completed in 2013• 1st Commercial CLT Building in US1 Commercial CLT Building in US
built with NorthAmericanCLT• CLT used only in the roof
PromegaGMP Facility, Fitchburg,WIArchitect: UihleinWilsonArchitects
• Currently under construction• Used in loft floorsUsed in loft floors• Applications can start out small
Capitol Lofts, Sacramento, CAArchitect:AppliedArchitecture
ProductAvailabilityProductAvailability
• Two NorthAmerican producers of structural CLTTwo NorthAmerican producers of structural CLT
• ~425,000 ft3 of annual production capacity (structural CLT)
• 2 3USCompanies pursuingmanufacturing facilities2 3USCompanies pursuingmanufacturing facilities
• Non commodity based product
• Standardizedmanufacture but custom fabrication• Standardizedmanufacture but custom fabrication
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How do youminimize product costs?
1. Use the minimum thickness possiblep1. Floors are usually controlled by vibrations.2. Fire rating requirements can effect thickness of panel.
2. Minimize material waste1. Keep in mind press sizes available.2. Selection of splice type effects %waste.3. Openings can be accommodated with out cutting holes in panels.
3 Minimize factory CNC work3. Minimize factory CNC work1. Consider field accommodation techniques for MEP2. Openings can be accommodated with out cutting holes in panels.
4. Use the standard product options4 p p1. Species2. Finish3. Lay up
5 Choose the right application for CLT5. Choose the right application for CLT.
ConcreteTilt upAlternative
Mid rise Market Potential Pacific NorthWest – Leading theWay
Amovement in CLT use in mid rise is motivated by incompatibilityy p yof cost/unit pro forma and zoning height allowances.
Building Code CLT is Being Defined
Building Code Product Standard
APA/ANSI PRG 320• 7 stress classes• Quality assurance testing• Identificationmarking
Building Code References for CLT
Building Code – ConstructionType IV Building Code – ConstructionType IV
Application – ConstructionType IV CodeApprovals – Product Reports
CodeApprovals – Product Reports CodeApprovals – USCLT Handbook
1. Introduction 9. Sound2. Manufacturing3. Structural
10.Enclosure11.Environmental
4. Lateral5. Connections
12.Lifting56. DOL andCreep7. Vibration7. Vibration8. Fire
Building Code – CodeApprovals
www.masstimber.com
Questions?
[contact info]
ProjectAssistance alsojavailable [email protected]
NorthAmericanCLT Production
Nordic EngineeredWoodStructurlam
Guardian BridgeGuardian BridgeSmartlam
• Both located in Canada near the US border; one on the east coast andone on the west
• SMARTLAM is in Montana and producing CLT for oil rig mats and isnot intended for building applications
• Guardian Bridge produces a CLT product for specific use in bridgeg p p p gdecks and can not support US distribution for building applications
NorthAmericanCLT Distribution
StoraensoMetsaWood (fomerly Finnforest)
KLHKLHBinderholz
• Several European producers have the ability and arewilling to source product to theUS
• Access is restrained byUS physical presence (i e NoAccess is restrained byUS physical presence (i.e.. Nosales force or good web presence)
• Transportation costs can effect competitive pricing• For improved economic and sustainable performance,
NorthAmerican producers are recommended.
USCLT Distribution & Production
InnovativeTimber Systems (ITS)InnovativeTimber Systems (ITS)Crosslam Solutions
• Several US based companies are currently sourcingp y gmaterial from Europe and providing a coordinationserviceTh i i i ll f l i h US• Their intent is to eventually manufacture panels in theUS
• There are others working onmanufacture in the US