this program registered - · pdf file• including largelarge timbertimber...

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.

Copyright Materials

This presentation is protected byUS andInternational Copyright laws. Reproduction,International Copyright laws. Reproduction,

distribution, display and use of the presentationwithout written permission of the speaker is

prohibited.

©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


• Reduced EmbodiedCarbonS b l • Reduced EmbodiedCarbon• Minimal waste productionSustainability

Performance


MinimalWasteMinimalWaste

ChangeThis Footer by going toView > Header and Footer …

Why are designers drawn toCLT?

• Reduced EmbodiedCarbonS b l • Minimal waste production

• Highly Energy EfficientSustainability

Performance


Energy EfficientEnergy Efficient


• Reduced EmbodiedCarbonl dS t i bilit • Minimal waste production


• Disaster ResilientPerformance Disaster ResilientPerformance

ConstructionEfficiencyEfficiency

Disaster ResilientDisaster Resilient




• Disaster ResilientPerformance • Good Fire ResistancePerformance


Good Fire ResistanceGood Fire Resistance

4.5 in

6.9 in

6 9 in


6.9 in

9.6 in




• Disaster Resilient• Good Fire ResistancePerformance Good Fire Resistance• High performingAcoustics

Performance


High PerformingAcousticsHigh PerformingAcoustics


Why are designers drawn toCLT?



• Disaster Resilient• Good Fire ResistancePerformance • High performingAcoustics• Structural Flexibility

Performance


Structural FlexibilityStructural Flexibility


• Reduced EmbodiedCarbonb l • Minimal waste production


• Disaster Resilient• Good Fire Resistance• High performingAcousticsPerformance High performingAcoustics• Structural Flexibility

• ~75% lighter than concreteConstructionEfficiency

75% LighterWeightThanConcrete75% LighterWeightThanConcrete



• 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


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


• Reduced EmbodiedCarbonMi i l t d tiSustainability • Minimal waste production


• Disaster Resilient• Good Fire Resistance• High performingAcousticsPerformance• Structural Flexibility

• ~75% lighter than concrete• Reduced construction time• Pre fabricated and Precise


Pre fabricated and PrecisePre fabricated and Precise


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


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

this program registered - · pdf file• including largelarge timbertimber...

Documents