Investigation on the mechanical behavior of glulam spliced joints connected with self-tapping screws and prestressed steel strips
https://www.sciencedirect.com/science/article/abs/... [Mechanical Performance] [Journal Article] 2023
H. Liu, C. Qiu, J. Zhao, W. Li, J. Shi, H. Liu, Z. Chen
A glulam spliced joint connected with self-tapping screws and prestressed steel strips was proposed and investigated. An experimental study was conducted considering the variation in the arrangement of the self-tapping screws and steel strips. The specimen with an inclination of 60° screws exhibited the highest ultimate load, whereas the specimen with screws in the X-position with the inclination of 60° had the highest ductility. ...

Design of taller timber buildings subjected to accidental loads: a state-of-the-art review
https://cahelen.eu/wp-content/uploads/2022/12/CA20... [null] [other]
Daniele Casagrande, Daniel Brandon, Giuseppe D ' Arenzo, Christian Viau, David Barber
...

Thermo-mechanical behavior of CLT beam-to-girder assemblies connected with T-shaped dowelled connections before, during and after fire exposure
https://www.emerald.com/insight/content/doi/10.110... [Fire Performance] [Journal Article] 2022
M. Shabanian, N.L. Braxtan
3-ply cross-laminated timber (CLT) is used to investigate the thermo-mechanical performance of intermediate-size assemblies comprised of T-shaped welded slotted-in steel doweled connections and CLT beams at ambient temperature (AT), after and during non-standard fire exposure....

Recovery testing of self-centering steel-timber hybrid beam-column connections
https://www.sciencedirect.com/science/article/abs/... [Connectors] [Journal Article] 2023
F. Chen, M. He, M. Li, J. Liu, Z. Shu, Z. Li
A self-centering steel-timber hybrid beam-column connection design was proposed to improve performance of conventional self-centering timber beam-column connections. The proposed connection utilized a steel-timber composite column to prevent the wood material from being compressed perpendicular to the grain. In this paper, the recovery performance of the hybrid connection was experimentally investigated....

Review of fire experiments in mass timber compartments
https://onlinelibrary.wiley.com/doi/pdf/10.1002/fa... [Fire Performance] [Journal Article] 2022
H. Mitchell, P. Kotsovinos, F. Richter, D. Thomson
The use of mass timber in buildings instead of non-combustible materials has benefits in sustainability, aesthetics, construction times, and costs. However, the uptake of mass timber in modern construction for medium and high-rise buildings is currently hindered by uncertainty regarding safety and structural performance in fire. We attribute this to a lack of data. Insufficient understanding means that for building designs beyond the current range of experiments the fire performance is unknown. ...

Analysis and enhancement of the new Eurocode 5 formulations for the lateral elastic deformation of LTF and CLT walls
https://www.sciencedirect.com/science/article/pii/... [Standards/Building code] [Journal Article] 2023
A. Aloisio, F. Boggian, H.Ø. Sævareid, J. Bjørkedal
This paper analyses the analytical formulations for the lateral elastic deformation of Light Timber Framed (LTF) and Cross-Laminated Timber (CLT) shear walls according to the new Eurocode 5 (EC5) proposal. Finite Element (FE) models and the Standard predictions are compared by emphasizing the role of each deformation contribution. A total of 1830 comparisons between analytical and numerical estimations are carried out by exploiting the Application Programming Interface of SAP2000 to modify the F...

Building Towards the Future of Canadas Sustainable Forests
https://curve.carleton.ca/system/files/etd/594ae0c... [Markets] [other]
Antoinette Tang,
...

The 2020 State of Canada’s Forests Annual Report
https://d1ied5g1xfgpx8.cloudfront.net/pdfs/40219.p... [Raw Materials] [Report] 2020

Forests and forest resources are an integral part of life in Canada. They are the source of many of the products we use every day, and they sustain many local economies across the country. They also provide numerous recreational opportunities and have strong cultural importance for many Canadians. ...

The State of Mass Timber in Canada 2021
https://d1ied5g1xfgpx8.cloudfront.net/pdfs/40364.p... [General Information] [Report] 2021
Natural Resources Canada
Mass timber is a transformative technology made by affixing or gluing together many pieces of wood veneers, flakes or dimension lumber to form larger, stronger pieces such as panels and beams. With wood’s natural ability to sequester and mitigate carbon dioxide (CO2), this green building material is one of our best answers to fundamental 21st century challenges associated with climate change and GHG emissions. Canada is a natural fit to take a leading role in this exciting new industry. Mass tim...

Impact of Mass Timber Compartment Fires on Façade Fire Exposure
https://link.springer.com/article/10.1007/s10694-0... [Fire Performance] [Journal Article] 2022
T. Engel, N. Werther
This study investigates whether timber surfaces that are initially exposed to fire or partially protected timber components can lead to a more critical fire exposure on the façade. Five full-scale fire tests were carried out. Three tests with a square compartment (4.5 × 4.5 m2) and two with a double-width compartment (4.5 × 9 m2). The tests were conducted with a high fire load density (1085 MJ/m2). While the first test was carried out in a non-combustible compartment, the exposed timber surfaces...

Compressive Properties of CLT Panels Made of Hardwood Tree Species from the Appalachian Region
https://ascelibrary.org/doi/full/10.1061/JAEIED.AE... [Raw Materials] [Journal Article] 2023
A. Palacio-Betancur, S.J. Hormozabad, C. Niman
This paper documents the structural behavior of several hardwood species abundant in the Appalachian region and demonstrates the promising feasibility of using these species in the construction industry with CLT panels considering the architectural and structural behavior and economic aspects. The hardwood tree species selected are abundant in the Appalachian region and this paper highlights their potential as a construction material and provides an insight for future development. Three hardwood...

The Arbour: An Innovative Composite Floor System
https://www.fastepp.com/wp-content/uploads/ASCE-20... [Case Study/Projects] [Conference Paper] 2022
M. Shahnewaz, R. Jackson, T. Tannert
The $130M Arbour, a 10-storey, 175,000 ft 2 , exposed tall wood structure located on George Brown Colleges waterfront campus in Toronto, Canada, will serve as an educational hub for the College, housing the Tall Wood Research Institute, a childcare centre, and teaching and social spaces. The innovative large-span beamless structural floor system is comprised of cross-laminated timber (CLT) concrete composite slab bands with perpendicular CLT infill panels, all supported on glulam columns. This l...

IGCC Circular Economy Discussion Paper
https://igcc.org.au/wp-content/uploads/2022/06/IGC... [Case Study/Projects] [Standard] 2022
Jillian Reid, Ashleigh Morris, Madeleine Hill
A key component contributing to the bioeconomy is developing low-carbon or no-carbon products for a net-zero future. An example of this is mass timber, made from compressed layers of wood; examples include cross-laminated timber (CLT) and glue-laminated timber (GLT). Mass timber is low carbon and has the potential to replace steel and concrete....

building-a-more-circular-australia.pdf
https://www.pwc.com.au/assurance/esg/building-a-mo... [Markets] [other]

...

Improving durability of cross laminated timber (CLT) with borate treatment
https://jwoodscience.springeropen.com/articles/10.... [Moisture/Durability] [Journal Article] 2022
S. Bagheri, M. Alinejad, K. Ohno, L. Hasburgh, R. Arango
Borate solution was used to treat two sets of Douglas-fir wood samples, one by spraying cross-laminated timbers (CLT) and another set by dip-treating wood in solutions at different retentions. A novel model was developed to explain and predict borate uptake based on dip-treatment parameters. Small-scale CLT samples were prepared using commercial emulsion polymer isocyanate (EPI) and polyurethane (PU) adhesive with dip-treated wood. The effect of adhesive and borate retention on CLT samples were ...

Evaluation of the bending properties of novel CLT with different configurations made of Australian plantation Eucalyptus nitens
https://www.sciencedirect.com/science/article/abs/... [Raw Materials] [Journal Article] 2022
A. Ettelaei, A. Taoum, J. Shanks, G. Nolan
Eucalypt species dominate the majority of hardwood plantations in Australia. Although fast-growing eucalypt plantation is not milled commercially for structural purposes due to forestry management procedures applied based on pulp and woodchips production, finding value-added use and developing mass-laminated timber products from this resource could be a sustainable alternate for the timber industries and construction sectors. The objectives of this study were to: (1) evaluate mechanical properti...

Methodology for Estimating Transportation Carbon Emissions in the US Mass Timber Supply Chain
https://scholarship.tricolib.brynmawr.edu/bitstrea... [Environmental Performance] [Report] 2022
Kyle Lee
This paper outlines a methodology that can be used to estimate transportation emissions in the supply chain for Glulam and CLT, and includes a program built in Python 3 which can execute these calculations for mass timber construction anywhere in the continental United States. Finally, this paper includes two case studies illustrating potential application for this model. ...

Fire Design for Multi-Story Timber Structures
https://www.theseus.fi/bitstream/handle/10024/7540... [Fire Performance] [Thesis/Dissertation] 2022
Robito Ibrahim
Climate change impact seen in every continent.It is affecting every nation´s economies and human health.Climate getting warm (Warming of 1.5°over past century), so that ice is melting to rise sea levels. (united nation, n.d.). So to tackle and combat climate change involves the use of renewable materials such as wood, many researching has been conducted to get way to replace convention building materials (steel and concrete), that are the main the factor that contribute to acceleration of climat...

Tallest Timber Buildings: Main Architectural and Structural Design Considerations
https://trepo.tuni.fi/bitstream/handle/10024/14085... [Design/Architectural aspects] [Book/Book Section] 2022
Hüseyin Emre Ilgın, Markku Karjalainen
Since the end of the twentieth century, the question of how to deal with the increasing scarcity of resources has been at the center and the need for renewable materials has come to the fore, especially in the construction sector. A possible solution to these environmental challenges is represented by the development of engineered timber products, which allowed the realization of tall timber structures. Their main drivers are decarbonization, forest management, and timber life cycle, urbanizatio...

Hysteresis modeling of timber-based structural systems using a combined data and model-driven approach
https://www.sciencedirect.com/science/article/abs/... [Mechanical Performance] [Journal Article] 2022
A. Aloisio, M.M. Rosso, A. Iqbal, M. Fragiacomo
This paper presents a novel computational approach to empirical hysteresis modelling applied to timber-based structures based on a combined data model-driven strategy. While the backbone curve is simulated using the experimental cyclic response based on a step-by-step optimization problem (data-driven approach), analytical functions describe the re-loading curves (model-driven approach). Empirical hysteresis models developed so far for timber structures are model-driven. However, the backbone cu...