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30 records – page 1 of 3.

An Overview of CLT Research and Implementation in North America

https://research.thinkwood.com/en/permalink/catalogue759
Year of Publication
2016
Topic
Market and Adoption
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Pei, Shiling
Rammer, Douglas
Popovski, Marjan
Williamson, Tom
Line, Philip
van de Lindt, John
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Market and Adoption
Keywords
Market
North America
Building Development
Research
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria
Summary
Although not yet seen as common practice, building with cross laminated timber (CLT) is gaining momentum in North America. Behind the scenes of the widely publicized project initiatives such as the Wood Innovation Design Centre Building in Canada and the...
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Free
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Chapter 5: Connections in Cross-Laminated Timber Buildings

https://research.thinkwood.com/en/permalink/catalogue824
Year of Publication
2013
Topic
Connections
Market and Adoption
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Mohammad, Mohammad
Douglas, Bradford
Rammer, Douglas
Pryor, Steven
Organization
FPInnovations
Binational Softwood Lumber Council
Year of Publication
2013
Country of Publication
Canada
United States
Format
Book Section
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Connections
Market and Adoption
Keywords
Code Acceptance
Fasteners
International Building Code
North America
Language
English
Research Status
Complete
Series
CLT Handbook - US Edition
ISBN
978-0-86488-553-1
ISSN
1925-0495
Summary
This Chapter focuses on a few fastening systems that reflect present-day practices, some being conventional, while others are proprietary. Given the recent introduction of CLT into the construction market, it is expected that new connection types will be developed over time. Issues associated with connection design specific to CLT assemblies are presented. The European design approach is also presented and the applicability of the National Design Specification (NDS) for Wood Construction design provisions for traditional fasteners in CLT such as bolts, dowels, nails, and wood screws are reviewed and design guidelines are provided. Several design examples are also given at the end to demonstrate how connections in CLT can be established using current NDS design provisions.
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Chapter 11: Environmental Performance of Cross-Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue830
Year of Publication
2013
Topic
Environmental Impact
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
O'Connor, Jennifer
Podesto, Lisa
Barry, Alpha
Grann, Blane
Organization
FPInnovations
Binational Softwood Lumber Council
Year of Publication
2013
Country of Publication
Canada
United States
Format
Book Section
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Environmental Impact
Keywords
Life-Cycle Assessment
Mid-Rise
Volatile Organic Compounds
Environmental Footprint
North America
Sustainable Forest Practices
Indoor Air Quality
Language
English
Research Status
Complete
Series
CLT Handbook - US Edition
Summary
The environmental footprint of CLT is frequently discussed as potentially beneficial when compared to functionally equivalent non-wood alternatives, particularly concrete systems. In this Chapter, the role of CLT in sustainable design is addressed. The embodied environmental impacts of CLT in a mid-rise building are discussed, with preliminary results from a comprehensive life cycle assessment (LCA) study. We also discuss other aspects of CLT's environmental profile, including impact on the forest resource and impact on indoor air quality from CLT emissions. The ability of the North American forest to sustainably support a CLT industry is an important consideration and is assessed from several angles, including a companion discussion regarding efficient use of material. Market projections and forest growth-removal are applied to reach a clear conclusion that CLT will not create a challenge to the sustainable forest practices currently in place in North America and safeguarded through legislation and/or third party certification programs. To assess potential impact on indoor air quality, CLT products with different thicknesses and glue lines were tested for their volative organic compounds (VOCs) including formaldehyde and acetaldehyde emissions. CLT was found to be in compliance with European labeling programs as well as the most stringent CARB limits for formaldehyde emissions. Testing was done on Canadian species, as there was no U.S. supplier of CLT at the time of this writing; because VOC emissions are affected by species, this work should be repeated from products made from different species.
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CLT Research: Available and Accessible to North American Building Designers

https://research.thinkwood.com/en/permalink/catalogue704
Year of Publication
2016
Topic
Market and Adoption
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Podesto, Lisa
Breneman, Scott
Publisher
Forest Products Society
Year of Publication
2016
Country of Publication
United States
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Market and Adoption
Keywords
North America
Research
Language
English
Research Status
Complete
Series
Wood Design Focus
Online Access
Free
Resource Link
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A Comparative Cradle-To-Gate Life Cycle Assessment of Mid-Rise Office Building Construction Alternatives: Laminated Timber or Reinforced Concrete

https://research.thinkwood.com/en/permalink/catalogue52
Year of Publication
2012
Topic
Energy Performance
Environmental Impact
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
General Application
Author
Robertson, Adam
Lam, Frank
Cole, Raymond
Publisher
MDPI
Year of Publication
2012
Country of Publication
Switzerland
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
General Application
Topic
Energy Performance
Environmental Impact
Keywords
Concrete
Embodied Carbon
Life-Cycle Assessment
Mid-Rise
National Building Code of Canada
NBCC
North America
Office Buildings
Language
English
Research Status
Complete
Series
Buildings
ISSN
2075-5309
Summary
The objective of this project was to quantify and compare the environmental impacts associated with alternative designs for a typical North American mid-rise office building. Two scenarios were considered; a traditional cast-in-place, reinforced concrete frame and a laminated timber hybrid design, which utilized engineered wood products (cross-laminated timber (CLT) and glulam). The boundary of the quantitative analysis was cradle-to-construction site gate and encompassed the structural support system and the building enclosure. Floor plans, elevations, material quantities, and structural loads associated with a five-storey concrete-framed building design were obtained from issued-for-construction drawings. A functionally equivalent, laminated timber hybrid design was conceived, based on Canadian Building Code requirements. Design values for locally produced CLT panels were established from in-house material testing. Primary data collected from a pilot-scale manufacturing facility was used to develop the life cycle inventory for CLT, whereas secondary sources were referenced for other construction materials. The TRACI characterization methodology was employed to translate inventory flows into impact indicators. The results indicated that the laminated timber building design offered a lower environmental impact in 10 of 11 assessment categories. The cradle-to-gate process energy was found to be nearly identical in both design scenarios (3.5 GJ/m2), whereas the cumulative embodied energy (feedstock plus process) of construction materials was estimated to be 8.2 and 4.6 GJ/m2 for the timber and concrete designs, respectively; which indicated an increased availability of readily accessible potential energy stored within the building materials of the timber alternative.
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Comparison of Environmental Performance of a Five-Storey Building Built with Cross-Laminated Timber and Concrete

https://research.thinkwood.com/en/permalink/catalogue65
Year of Publication
2012
Topic
Energy Performance
Environmental Impact
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems

Comparisons of the Production Standards for Cross Laminated Timber (CLT) in Europe versus USA

https://research.thinkwood.com/en/permalink/catalogue1705
Year of Publication
2016
Topic
Market and Adoption
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Young, Timothy
Barbu, Marius
Hindman, Daniel
Weissensteiner, Josef
Tudor, Eugenia
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Market and Adoption
Keywords
Europe
North America
Manufacturing
Standards
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 4412-4419
Summary
Cross laminated timber (CLT) is a new engineered wood product that has experienced rapid growth and market acceptance for residential and non-residential construction in western and central Europe. Potential exists for rapid market adoption in North America if manufacturing capacities are developed...
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Controlled Rocking Cross-Laminated Timber Walls for Regions of Low-to-Moderate Seismicity

https://research.thinkwood.com/en/permalink/catalogue1726
Year of Publication
2016
Topic
Design and Systems
Seismic
Material
CLT (Cross-Laminated Timber)
Application
Walls
Author
Kovacs, Mike
Wiebe, Lydell
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Walls
Topic
Design and Systems
Seismic
Keywords
North America
Canada
Nonlinear Time History Analysis
Prototype
Controlled Rocking Heavy Timber Walls
Drifts
Energy Dissipation
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 4671-4680
Summary
Controlled rocking heavy timber walls (CRHTW) were originally developed in New Zealand as a low-damage seismic force resisting system using Laminated Veneer Lumber (LVL). This paper examines one way of adapting them to regions of low-to-moderate seismicity in North America, using Cross-Laminated Timber (CLT) composed of...
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Design Models for CLT Shearwalls and Assemblies Based on Connection Properties

https://research.thinkwood.com/en/permalink/catalogue369
Year of Publication
2014
Topic
Connections
Material
CLT (Cross-Laminated Timber)
Application
Shear Walls
Author
Popovski, Marjan
Gavric, Igor
Organization
FPInnovations
Year of Publication
2014
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Shear Walls
Topic
Connections
Keywords
Lateral Loads
Analytical Model
North America
Europe
Language
English
Research Status
Complete
Notes
Report is currently not available due to the redevelopment of FPInnovations' publications website.
Summary
The work presented in this report is a continuation of the FPInnovations' research project on determining the performance of the CLT as a structural system under lateral loads. As currently there are no standardized methods for determining the resistance of CLT shearwalls under lateral loads, the design approaches...
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Direct Impact Sound Insulation of Cross Laminate Timber Floors with and Without Toppings

https://research.thinkwood.com/en/permalink/catalogue227
Year of Publication
2014
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
Floors
Author
Zeitler, Berndt
Schoenwald, Stefan
Sabourin, Ivan
Organization
Inter-noise
Year of Publication
2014
Country of Publication
Australia
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Floors
Topic
Acoustics and Vibration
Keywords
North America
Sound Insulation
Concrete Topping
Interlayer
Language
English
Conference
Inter-Noise 2014
Research Status
Complete
Notes
November 16-19, 2014, Melbourne, Australia
Online Access
Free
Resource Link
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30 records – page 1 of 3.