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17 records – page 1 of 2.

100-Year Performance of Timber-Concrete Composite Bridges in the United States

https://research.thinkwood.com/en/permalink/catalogue2561
Year of Publication
2020
Topic
Serviceability
Application
Bridges and Spans
Author
Wacker, James
Dias, Alfredo
Hosteng, Travis
Year of Publication
2020
Country of Publication
United States
Format
Journal Article
Application
Bridges and Spans
Topic
Serviceability
Keywords
Concrete
Composite
Superstructure
Performance
Inspection
Language
English
Research Status
Complete
Series
Journal of Bridge Engineering
Summary
The use of timber–concrete composite (TCC) bridges in the United States dates back to approximately 1924 when the first bridge was constructed. Since then a large number of bridges have been built, of which more than 1,400 remain in service. The oldest bridges still in service are now more than 84 years old and predominately consist of two different TCC systems. The first system is a slab-type system that includes a longitudinal nail-laminated deck composite with a concrete deck top layer. The second system is a stringer system that includes either sawn timber or glulam stringers supporting a concrete deck top layer. The records indicate that most of the TCC highway bridges were constructed during the period of 1930–1960. The study presented in this paper discusses the experience and per-formance of these bridge systems in the US. The analysis is based on a review of the relevant literature and databases complemented with field inspections conducted within various research projects. Along with this review, a historical overview of the codes and guidelines available for the design of TCC bridges in the US is also included. The analysis undertaken showed that TCC bridges are an effective and durable design alternative for highway bridges once they have shown a high performance level, in some situations after more than 80 years in service with a low maintenance level.
Online Access
Free
Resource Link
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The Case for Tall Wood Buildings

https://research.thinkwood.com/en/permalink/catalogue835
Edition
Second
Year of Publication
2017
Topic
General Information
Cost
Environmental Impact
Design and Systems
Material
CLT (Cross-Laminated Timber)
LSL (Laminated Strand Lumber)
LVL (Laminated Veneer Lumber)
Application
Wood Building Systems
Organization
Michael Green Architecture
Edition
Second
Year of Publication
2017
Country of Publication
Canada
Format
Book
Material
CLT (Cross-Laminated Timber)
LSL (Laminated Strand Lumber)
LVL (Laminated Veneer Lumber)
Application
Wood Building Systems
Topic
General Information
Cost
Environmental Impact
Design and Systems
Keywords
FFTT
Tall Wood
Language
English
Research Status
Complete
Summary
The report describes a new structural system in wood that is the first significant challenger to concrete and steel structures since their inception in tall building design more than a century ago. The introduction of these ideas is fundamentally driven by the need to find safe, carbon-neutral and sustainable alternatives to the incumbent structural materials of the urban world. The market for these ideas is quite simply enormous. The proposed solutions have significant capacity to revolutionize the building industry to address the major challenges of climate change, urbanization, sustainable development and world housing needs.
Online Access
Free
Resource Link
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Delamination Occurrence in Engineered Mass Timber Products at Elevated Temperatures

https://research.thinkwood.com/en/permalink/catalogue1770
Year of Publication
2016
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Emberley, Richard
Yu, Zeyu
Fernando, Dilum
Torero, José
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Fire
Keywords
Thermal Penetration Depths
Heat Flux
Shear Tests
Temperature
Delamination
Failure Modes
Charring
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 5294-5301
Summary
An experimental study was conducted to elucidate the effects of thermal penetration on delamination and the potential changes in failure mode of CLT. The first test series studied thermal penetration depths at various heat fluxes. The second test series consisted of single lap shear tests at homogeneous elevated temperatures followed by a...
Online Access
Free
Resource Link
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Development of a New Generation of Structural Composites

https://research.thinkwood.com/en/permalink/catalogue2323
Organization
Université Laval
Country of Publication
Canada
Research Status
In Progress
Notes
Project contact is Pierre Blanchet at Université Laval
Summary
It is reasonable to believe that a second generation of structural products will appear, bringing new properties and promoting the use of biobased materials in the construction of tall buildings. Among the possible development options, Corruven's Vcore and H-core products could offer second-generation material developments. The proposed project will be a product design project. A specification will be established and it will identify possible properties in the CLT structural multilayer product. Prototypes will be produced and tested to characterize them. An environmental characterization under development of the products will also be realized by applying the streamlined LCA method as proposed by Heidari et al. (2017). The optimized product will be fully characterized according to the application potential in the building (mechanical, fire, acoustic).
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Ductility Based Force Reduction Factors for Symmetrical Cross-Laminated Timber Structures

https://research.thinkwood.com/en/permalink/catalogue446
Year of Publication
2014
Topic
Mechanical Properties
Seismic
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Walls
Author
Popovski, Marjan
Pei, Shiling
van de Lindt, John
Karacabeyli, Erol
Organization
European Association of Earthquake Engineering
Year of Publication
2014
Country of Publication
Canada
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Walls
Topic
Mechanical Properties
Seismic
Keywords
Force Modification Factors
Ductility
National Building Code of Canada
Fasteners
Seismic Performance
Language
English
Conference
Second European Conference on Earthquake Engineering and Seismology
Research Status
Complete
Notes
August 25-29, 2014, Istanbul, Turkey
Online Access
Free
Resource Link
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Earthquake Resistant Design and Sustainability through Wooden Composites in Multi-Storey Structures

https://research.thinkwood.com/en/permalink/catalogue148
Year of Publication
2014
Topic
Design and Systems
Seismic
Material
CLT (Cross-Laminated Timber)
LVL (Laminated Veneer Lumber)
Application
Wood Building Systems
Author
Ceylan, Aygül
Canan Girgin, Z.
Organization
European Association of Earthquake Engineering
Year of Publication
2014
Country of Publication
Turkey
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
LVL (Laminated Veneer Lumber)
Application
Wood Building Systems
Topic
Design and Systems
Seismic
Keywords
Multi-Storey
Canada
Italy
New Zealand
Wooden Structural Systems
Wooden-Hybrid Structural Systems
Post-Tensioning
Connections
Sustainability
Language
English
Conference
Second European Conference on Earthquake Engineering and Seismology
Research Status
Complete
Notes
August 25-29, 2014, Istanbul, Turkey
Online Access
Free
Resource Link
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Effects of Wave Transformation in Junctions of Cross-Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue1631
Year of Publication
2016
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
Walls
Author
Buchegger, Blasius
Ferk, Heinz
Schanz, Martin
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Walls
Topic
Acoustics and Vibration
Keywords
FEM
Sound Insulation
Sound Reduction Index
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 2895-2903
Summary
A conversion of out-of-plane wave components into in-plane wave components at a junction may lead to increasing values of the flanking sound reduction index. The transformed components may contribute to sound radiation, if a reverse transformation occurs at a second junction...
Online Access
Free
Resource Link
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Embodied Carbon Pilot Phase 2

https://research.thinkwood.com/en/permalink/catalogue2552
Topic
Environmental Impact
Application
Wood Building Systems
Country of Publication
Canada
Application
Wood Building Systems
Topic
Environmental Impact
Keywords
Life-Cycle Assessment
Embodied Carbon
Mid-Rise
Multi-Family
Research Status
In Progress
Notes
Project contact is Angelique Pilon at the University of British Columbia
Summary
The pilot uses whole-building life cycle assessments (WBLCA) to identify major contributors to embodied carbon impacts. More importantly, the project conducts a critical analysis of the procedural requirements, information gaps, systemic barriers and other challenges for project teams seeking to use LCA as an effective tool in reducing their environmental impacts. The second phase of the Embodied Carbon Pilot project builds on the experiences and learning of Phase 1 while addressing a more common and replicable building typology. The first year, we used mass timber buildings at the University of British Columbia for the pilot LCAs and developed a protocol/strategy for adapting project information into the appropriate bill-of-materials (BOM) format for input into LCA tools, while identifying procedural challenges and barriers and variations of different material take-off methodologies and LCA tools. This second year, we will target mid-rise, multi-unit residential buildings (MURBs), a common and growing building type throughout British Columbia. Mid-rise MURBS are between 4 and 8 stories and typically use wood as one of the primary construction materials: stick-frame construction for projects under 6-stories or an increasing number of mass timber projects.
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Engineering Performance Characteristics of Hardwood Cross-Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue2322
Organization
USDA Forest Service Forest Products Laboratory, Michigan Technological University
Country of Publication
United States
Research Status
In Progress
Notes
Project contacts are Xinfeng Xie at Michigan Technological University, and Xiping Wang at the Forest Products Laboratory
Summary
Two major outcomes are expected. First is the establishment of a technical basis for developing allowable bending strength and stiffness of hardwood CLT panels. Second is the development of models for predicting the mechanical properties of CLT products made of low-grade hardwood lumber.
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Evaluation of the Seismic Performance Factors Of Post-Tensioned Timber Wall Systems

https://research.thinkwood.com/en/permalink/catalogue80
Year of Publication
2014
Topic
Seismic
Material
LVL (Laminated Veneer Lumber)
Application
Walls
Author
Sarti, Francesco
Palermo, Alessandro
Pampanin, Stefano
Berman, Jeffrey
Organization
The European Association for Earthquake Engineering
Year of Publication
2014
Country of Publication
Turkey
Format
Conference Paper
Material
LVL (Laminated Veneer Lumber)
Application
Walls
Topic
Seismic
Keywords
Connections
Hybrid
Post-Tensioned
Pres-Lam
Testing
Language
English
Conference
Second European Conference on Earthquake Engineering and Seismology
Research Status
Complete
Notes
August 25-29, 2014, Istanbul, Turkey
Online Access
Free
Resource Link
Less detail

17 records – page 1 of 2.