Structural Damage Evaluation of Multistory Timber–Steel Hybrid Structures through Shake Table Tests
https://ascelibrary.org/doi/10.1061/%28ASCE%29CF.1... [Seismic Performance] [Journal Article] 2021
Zheng Li, M.ASCE; Xijun Wang; Minjuan He, M.ASCE; Jiajia Ou; Minghao Li, A.M.ASCE; Qi Luo; and Hanlin Dong
Timber-based hybrid structures provide a prospective solution for utilizing environmentally friendly timber material in the construction of midrise or high-rise structures. This study mainly focuses on structural damage evaluation for a type of timber–steel hybrid structure that incorporates prefabricated light wood-frame shear walls into steel moment-resisting frames (SMRFs). The structural damage of such a hybrid structure was evaluated through shake table tests on a 4-story large-scale timber...

Predicting the Average Compression Strength of CLT by Using the Average Density or Compressive Strength of Lamina
https://pdfs.semanticscholar.org/baae/6a694e2c25fe... [Mechanical Performance] [Journal Article] 2022
Zhaopeng Tian, Yingchun Gong, Junhua Xu, Mingyue Li, Zhaohui Wang, Haiqing Ren
The compressive strength in the major direction of cross-laminated timber CLT is the key to supporting the building load when CLT is used as load-bearing walls in high-rise wood structures. This study mainly aims to present a model for predicting the average compressive strength of CLT and promoting the utilization of CLT made out of planted larch. The densities and compressive strengths of lamina specimens and CLT samples with widths of 89 and 178 mm were evaluated, and their relationship was a...

Using BIM to deliver low-carbon wood buildings
https://www.naturallywood.com/blog/using-bim-to-de... [Environmental Performance] [Web Page] 2022
naturally:wood
n the original design for the Sydney Opera House, Jørn Utzon envisioned the shells supported by precast concrete ribs under a reinforced concrete structure, which turned out to be prohibitively expensive. As one of the first projects to use computational calculations, the final solution—reached jointly between the architect and the structural engineer—consisted of a precast ribbed system of concrete shells created from sections of a sphere....

Trinity Western University Jacobson Hall
https://www.naturallywood.com/project/trinity-west... [Case Study/Projects] [Web Page] 2022
naturally:wood
Trinity Western University needed to expand student housing, but timing was tight. With just nine months from contract signing to students moving in, Jacobson Hall, a 220-student housing facility, was built using modular construction and completed in almost half the time it would have taken to build using conventional construction....

Renovated APA Laboratory Expands Testing Capabilities
https://www.apawood.org/Data/Sites/1/documents/tec... [Other] [Report] 2019
APA
APA – The Engineered Wood Association recently expanded the research capabilities at its laboratory in Tacoma, Washington. The significant upgrades to APA’s research and testing facilities will support innovative design and construction of timber structures using wood structural panels, engineered wood products and mass timber assemblies. Built in 1969, the 42,000-square-foot lab has long been recognized as one of the leading wood research facilities in North America. While the lab had been wel...

Martha C. Cutts Gymnasium - Think Wood
https://www.thinkwood.com/projects/martha-c-cutts-... [Case Study/Projects] [Web Page] 2022
Think Wood
For Washington D.C. education leaders, the Martha C. Cutts Gymnasium is more than just the region’s first cross-laminated timber building. The 11,266 square foot facility signals an exciting new construction advance that supports student well-being and school distinction within ever-tightening budgets....

KLH Building System Multi-Story Residential Buildings
https://www.klh.at/wp-content/uploads/2022/04/klh-... [Commercial/Company Information] [Report] 2022
KLH Massivholz GmbH
Building with a especially in timber construction. The diverse and natural advantages also bring with them a necessary degree of care that the long-term use of timber material demands. In the meantime, timber buildings have found their way into almost all areas of building construction and have to compete with other building structures....

Influence of the Connection Modelling on the Seismic Behaviour of Crosslam Timber Buildings
https://link.springer.com/content/pdf/10.1007%2F97... [Seismic Performance] [Journal Article] 2014
I Sustersic, B Dujic, Massimo Fragiacomo
The paper investigates the influence of modelling different types of connections in multi-storey cross-laminated timber buildings. The importance of modelling the connection flexibility in the prediction of the natural vibration periods and the base shear force of a crosslam building is demonstrated using linear-dynamic analysis. The buildings global ductility and peak ground acceleration were compared using non-linear static and dynamic analyses, demonstrating that the former may lead to non-co...

Wood Load-Carrying Capacity of Timber Connections: An Extended Application for Nails and Screws
https://link.springer.com/chapter/10.1007/978-94-0... [Connectors] [Book/Book Section] 2014
Pouyan Zarnani & Pierre Quenneville
The wood engineering community has dedicated a significant amount of effort over the last decades to establish a reliable predictive model for the load-carrying capacity of timber connections under wood failure mechanisms. Test results from various sources (Foschi and Longworth 1975; Johnsson 2003; Quenneville and Mohammad 2000; Stahl et al. 2004; Zarnani and Quenneville 2012a) demonstrate that for multi-fastener connections, failure of wood can be the dominant mode...

Non-Destructive Assessment of the Dynamic Elasticity Modulus of Eucalyptus nitens Timber Boards
https://www.mdpi.com/1996-1944/14/2/269... [Raw Materials] [Journal Article] 2021
Opazo-Vega, A.; Rosales-Garcés, V.; Oyarzo-Vera, C
Eucalyptus nitens is a fast-growing wood species with a relevant presence in countries like Australia and Chile. The sustainable construction goals have driven the search of structural applications for Eucalyptus nitens; however, this process has been complicated due to the defects usually presented in these timber boards. This study aims to evaluate the dynamic elasticity modulus (Exd) of Eucalyptus nitens timber boards through non-destructive vibration-based tests. Thirty-six timber boards wit...

Drive-in torque for self-tapping screws into timber
https://www.icevirtuallibrary.com/doi/abs/10.1680/... [Connectors] [Journal Article] 2022
Cong Zhang, Kiho Jung, Richard Harris, and Wen-Shao Chang
Self-tapping screws have been widely used in timber constructions. The current practice considers self-tapping screws perform best in connecting two members when they are fully threaded; however, the drive-in resistance caused by the friction between the wood and the screw can potentially damage the screw and reduce the effectiveness of its applications. The relationship between their thread configuration and the drive-in torque force has not been investigated, and the question as to how would k...

Seismic performance of timber structures using rocking walls with low damage hold-down connectors
https://www.sciencedirect.com/science/article/abs/... [Seismic Performance] [Journal Article] 2020
Ashkan Hashemi, Pierre Quenneville
Modern seismic-resistant timber structures are designed in a way that the massive timber elements remain elastic, and the earthquake-induced damage is localised in the connections. However, these connections may experience large plastic deformations which usually is accompanied by crushing of the surrounding wood. These plastic deformations make the structure vulnerable to aftershocks and future events. Furthermore, the expected residual deformation in the connections and members could make the ...

Using BIM to deliver low-carbon wood buildings | Timber trends | naturally:wood
https://www.naturallywood.com/blog/using-bim-to-de... [Markets] [Web Page] 2022
naturally:wood and Forestry Innovation Investment
In the original design for the Sydney Opera House, Jørn Utzon envisioned the shells supported by precast concrete ribs under a reinforced concrete structure, which turned out to be prohibitively expensive. As one of the first projects to use computational calculations, the final solution—reached jointly between the architect and the structural engineer—consisted of a precast ribbed system of concrete shells created from sections of a sphere....

An Environmental Impact of a Wooden and Brick House by the LCA Method
https://www.researchgate.net/publication/312491602... [Environmental Performance] [Journal Article] 2016
Jozef Mitterpach, Jozef Štefko
The main objective of this paper thesis is to determine the environmental impact of two houses made of two alternative materials-a wooden and a brick house-using a Life Cycle Assessment (LCA). By comparing the material composition of their design to determine the environmental impacts of global warming, human health, consumption of resources and ecosystem quality. An overall comparison showed that the materials for the construction of a wooden house have less negative impact on the environment t...

Dynamic behaviour of dowel-type connections under in-service vibration
https://www.semanticscholar.org/paper/Dynamic-beha... [Connectors] [Thesis/Dissertation] 2013
Thomas Reynolds
This study investigated the vibration serviceability of timber structures with dowel-type connections. It addressed the use of such connections in cutting-edge timber structures such as multi-storey buildings and long-span bridges, in which the light weight and flexibility of the structure make it possible that vibration induced by dynamic forces such as wind or footfall may cause discomfort to occupants or users of the structure, or otherwise impair its intended use. The nature of the oscillati...

Wood concrete skyscrapers
https://www.researchgate.net/publication/265185261... [Tall Buildings] [Conference Paper] 2010
Jan-Willem van de Kuilen, Ario Ceccotti, Zhouyan Xia, Minjuan He, Shuo Li
Multi-storey buildings in timber have gained increased interest with the development of cross laminated timber products. A wide variety of CLT-elements is currently on the market, most characterized by a fixed width and lengths of up to 16-20 meters. Thickness generally is limited for technical reasons to approximately 350 mm. Even though no product standard is available yet, multi-storey buildings have been realized with CLT in a number of countries, showing the potential of the product. A mult...

Tall Wood Buildings - The Canadian Wood Council - CWC
https://cwc.ca/en/why-build-with-wood/sophisticate... [Tall Buildings] [Web Page] 2022
Canadian Wood Council
With advanced construction technologies and modern mass timber products such as glued-laminated timber, cross-laminated timber and structural composite lumber, building tall with wood is not only achievable but already underway – with completed contemporary buildings in Australia, Austria, Switzerland, Germany, Norway and the United Kingdom at 9 storeys and taller. Increasingly recognized by the construction sector as an important, new, and safe construction choice, the reduced carbon footprint ...

A New Taxonomic Perspective on Wood-Based Technologies for the Transformation of the AEC Sector
https://link.springer.com/content/pdf/10.1007/978-... [Moisture/Durability] [Book/Book Section] 2021
Federica Brunone, Marco Cucuzza, Marco Imperadori, Andrea Vanossi
The transformation of the built environment requests specific considerations in the definition of construction strategies. Under the technological perspective, the major requirements are lightness and efficiency, intended as the minimization of the impact over the existing building, along with the maximization of the building performances and overall value. To find suitable solutions, this chapter investigates wood as a construction material. At first, it defines the domain of the timber constru...

Thermo-mechanical behaviour of cross-laminated timber slabs under standard and natural fires
https://onlinelibrary.wiley.com/doi/10.1002/fam.29... [Fire Performance] [Journal Article] 2019
Mindeguia, J-C, Mohaine, S, Bisby, L, Robert, F, McNamee, R, Bartlett, A.
The results presented in this paper are part of a multi-partner collaborative project named ‘The Épernon Fire Tests Programme’, the purpose of which is to analyse the different behaviours of combustible and non-combustible loaded structures when they are tested under standard and ‘natural’ fires. The project has several objectives, such as quantification of the energy participation of combustible materials in fire tests, the influence of combustible surfaces and ventilation factors on the dynami...

In-plane stiffness of timber floors strengthened with CLT
https://www.springerprofessional.de/en/in-plane-st... [Alternative/Hybrid Configurations] [Journal Article] 2015
Authors: J. M. Branco, M. Kekeliak, P. B. Lourenço
Five full-scale timber floors were tested in order to analyse the in-plane behaviour of these structural systems. The main objective was an assessment of the effectiveness of in-plane strengthening using cross-laminated timber (CLT). To this end, one unstrengthened specimen (original), one specimen strengthened with a second layer of floorboards, two specimens strengthened with three CLT panels, and one specimen strengthened with two CLT panels, were tested. A numerical analysis was then perform...