Behaviour of Multi-Storey Cross-Laminated Timber Buildings under Lateral Loading
https://pureadmin.qub.ac.uk/ws/portalfiles/portal/... [Seismic Performance] [Thesis/Dissertation] 2020
Hughes, Claire
In response to the global drive towards sustainable construction, CLT has emerged as a competitive alternative to other construction materials. CLT buildings taller than 10-storeys and CLT buildings in regions of moderate to high seismicity would be subject to higher lateral loads due to wind and earthquakes than CLT buildings which have already been completed. The lack of structural design codes and limited literature regarding the performance of CLT buildings under lateral loading are barriers...

Shear strength of in-plane loaded cross laminated timber beam elements–experimental and theoretical investigation
https://iopscience.iop.org/article/10.1088/1757-89... [Mechanical Performance] [Journal Article] 2020
M Jeleč, K Strukar, V Rajčić
Cross laminated timber (CLT), as a versatile engineered timber product, has in recent years become well-known and of global interests. The orthogonal laminar structure allows for application as beams, walls or panels for both out-of-plane and in-plane loading conditions. The work presented here concerns experimental investigations of in-plane loaded CLT beams, as very relevant from a practical engineering point of view due to reinforcing effect of transversal layers with respect to stress perpen...

Verification of seismic resistant performance of developed original cross-laminated timber core structure method by shaking table experiment
https://iopscience.iop.org/article/10.1088/1755-13... [Environmental Performance] [Journal Article] 2020
Lars G. F. Tellnes, Simon A. Saxegård, Fredrik Moltu Johnsen
Cross laminated timber (CLT) has recently increased in use as a building material for low carbon design and is often applied in small and multi-story buildings. Several studies have shown lower fossil related greenhouse gas emission than alternatives, but the life cycle emissions vary substantially between different CLT producers. These emissions are mainly indirect and thus climate change mitigation could reduce these emissions. Previous research shows that that biofuels and carbon capture and ...

Effects of densification on low-density plantation species for cross-laminated timber
https://aip.scitation.org/doi/abs/10.1063/5.002904... [Raw Materials] [Journal Article] 2020
Tan Yu Feng, Liew Kang Chiang
This paper aims to determine the relationship of densifying wood materials and the mechanical strength of Cross Laminated Timber (CLT). Plantation-grown species with low density wood, Batai (Falcataria moluccana) was utilized in this study to develop CLT. The laminas were pre-treated with water steam to soften the wood structure, prior to densification. Subsequently, the laminas were pressed in radial direction by using a laboratory hot press machine at 170 °C, 8 MPa, for 45 minutes. The process...

Hyperelastic Hold-Down for Cross-Laminated Timber Shear Walls
https://unbc.arcabc.ca/islandora/object/unbc%3A591... [Connectors] [Thesis/Dissertation] 2020
Hosein Asgari
Cross-laminated Timber (CLT)isincreasingly being used intall buildings. However, there are some challenges when designinghigh-rise CLT structures, amongst them the need fornovelhold-downs (HD), for shear walls. While commonly used HDs behave as a dissipative connection, the currentCanadian Standard for Engineering Design in Wood recommends designing HDs as a non-dissipative connection. As hyperelastic material, an elastomer (rubber) is capable to carry high lo...

The Numerical analysis and experimental verification on the thermal performance of hybrid Cross-Laminated Timber (CLT)-glass facade elements
https://proceedings.challengingglass.com/index.php... [Moisture/Durability] [Journal Article] 2020
Rajčić, V., Bedon, C., Barbalic, J. and Perkovic, N.
Structural solutions involving the mechanical interaction of timber and glass load-bearing members showed a progressive increase in the last decade. Among others, a multipurpose hybrid facade element composed of Cross-Laminated Timber (CLT) members and glass panels interacting by frictional contact mechanisms only was proposed ion the framework of the VETROLIGNUM project. While demonstrating enhanced load-bearing and deformation capacity performances under seismic loads, facade elements are know...

Effects of Moisture Intrusion on the Performance of a Cross-Laminated Timber (CLT) Angle Bracket Connection
https://ir.library.oregonstate.edu/concern/graduat... [Connectors] [Thesis/Dissertation] 2020
Bora, Shrenik S.
Cross-laminated timber (CLT) is revolutionizing the use of wood in the construction sector of North America as a solution for walls and diaphragms in mid-rise or even high-rise timber structures on account of its environmental advantages, high strength-to-weight ratio, fire-safety performance, and propensity for prefabrication. However, considering the hygroscopic nature of wood, moisture intrusion can affect material properties and, moreover, moisture increases the possibility of biological deg...

Potential of Hardwood Lumber in Cross Laminated Timber in North America:A CLT Manufacturers Perspective
http://www.journalmtc.com/index.php/mtcj/article/v... [Raw Materials] [Journal Article] 2020
Adhikari, S., Quesada, H., Bond, B. and Hammett, T.
The objectives of this research are to study the current manufacturing practices for Cross Laminated Timber (CLT) in North America and record manufacturers’ perspectives to identify the opportunities and challenges of using hardwood lumber in their existing set-up. Face-to-face interviews and industry visits were used to collect data on current production practices and manufacturers’ opinions regarding the potential use of hardwood lumber in CLT manufacturing. To date, only two United States-bas...

Cross Laminated Timber. Advantages And Opportunities for Implementation In Russia
https://www.elibrary.ru/start_session.asp?rpage=ht... [Markets] [Conference Paper] 2020
Shishova, M.A
6/28/2021https://www.elibrary.ru/page_error.asp 1/1Ошибка в параметрах страницы, или недостаточно прав для открытия страницы, или закончилась текущая сессия. Уточните запрос или перейдите на главную страницу сайтаhttps://www.elibrary.ru/defaultx.asp...

Cross laminated timber shear wall connections for seismic applications
https://krex.k-state.edu/dspace/bitstream/handle/2... [Connectors] [Thesis/Dissertation] 2020
Falk, Michael
This report gives a state-of-the-art summary of current cross-laminated timber (CLT) shear wall systems and connections for seismic applications. CLT panels are gaining popularity as a building material because of their biaxial strength and light weight. CLT panels can be used in building construction not only as floors, but also as shear walls. However, the behavior of CLT shear wall systems under seismic load has yet to be defined. CLT panels are nearly rigid under in-plane loading. While this...

Fire Performance of Unprotected Cross Laminated Timber Panel
http://www.ijscer.com/uploadfile/2020/0402/2020040... [Fire Performance] [Journal Article] 2020
Tee, K.F., Wong, B.V. and Woszczak, J.
The main objective of this paper is to define the fire performance of unprotected Cross Laminated Timber (CLT) floor panel by comparing available experimental results with numerical and analytical analysis. A numerical model of multi-layered CLT panel is implemented in ABAQUS using Finite Element Method (FEM), while analytical analysis based on simplified design method known as the Reduced Cross-Section Method proposed by Eurocode 5, Part 1-2. Mechanical and thermal analysis of unprotected, 5-la...

Monotonic and Cyclic Testing of Cross-Laminated Timber Diaphragms
https://ir.library.oregonstate.edu/concern/graduat... [Mechanical Performance] [Thesis/Dissertation] 2020
Beairsto, Cody J.
Mass timber is emerging as a viable form of construction around the world in new markets for wood buildings. The entrance into these markets has driven the demand for more knowledge to enable designs alongside other structural materials such as steel and reinforced concrete. Large, in-plane tests on cross-laminated timber (CLT) diaphragms (4570 mm x 4570 mm [15 ft x 15 ft]) are used to quantify ductility through the diaphragm force reduction factor (Rs) from ASCE 7-16, m-factors from ASCE 41-17,...

Experimental Study and Finite Element Simulation Analysis of the Bending Properties of Cross-Laminated Timber (CLT) Two-Way Plates.
http://www.jestr.org/downloads/Volume13Issue4/full... [Mechanical Performance] [Journal Article] 2020
Jiejun Wang, Fan Ning, Junzhu Li, Houyuan Zhu
Cross-laminated timber (CLT) plates are new components in modern wooden building structures and have good integrity, stability, and high strength. However, the bending performance of CLT plate is affected by the stacking method of laminates. This study adopted two different stacking methods (three-layer cross and four-layer cross) to make four CLT two-way slabs by using Larix gmelinii slab and polyurethane structural adhesive as raw materials. The slabs were divided into two grou...

Automated Surface Inspection of Cross Laminated Timber
https://www.diva-portal.org/smash/record.jsf?pid=d... [Other] [Thesis/Dissertation] 2020
Andersson, Per
The use of wood, such as Cross Laminated Timber (CLT), has increased over the last years in the construction of buildings. CLT is primarily considered a structural component inside walls, floors, and ceilings. But, when the design specifies an exposed surface of the CLT, where the wood surface will be visible in the finished building, there are requirements on the visual appearance of the CLT. To fulfil the requirements visual inspections of wood defects of the surface are conducted, before the ...

Numerical analysis of self-centring cross-laminated timber walls
https://open.library.ubc.ca/cIRcle/collections/ubc... [Mechanical Performance] [Thesis/Dissertation] 2020
Slotboom, Christian
Self-centring Cross-Laminated Timber (CLT) walls are a low damage seismic force resisting system, which can be used to construct tall wood buildings. This study examines two approaches to model self-centring CLT walls, one that uses lumped plasticity elements, and another that uses fibre-based elements. Finite element models of self-centring CLT walls are developed using the Python interpreter of Opensees, OpenSeesPy, and tested under monotonic and reverse cyclic loading conditions. Outputs from...

Use of cross laminated timber (CLT) in industrial buildings in Nordic climate–A case study
https://iopscience.iop.org/article/10.1088/1755-13... [Environmental Performance] [Journal Article] 2020
Vilde Jakobsen Svortevik, Mathias Berntzen Engevik, Dimitrios Kraniotis1
In recent years there has been a greater interest in developing new more sustainable solutions in the construction of buildings and in particular of large commercial and industrial buildings. This study analyses the feasibility and degree of sustainability of using cross laminated timber (CLT) as building material in industrial buildings in Nordic climate. An industrial building located in Eastern Norway, MAXBO Bjertnestangen, has been used as case study for the analysis. Two scenarios have been...

Analytical Model for 5-ply Cross-Laminated Timber
https://www.researchgate.net/publication/343836476... [Design/Architectural aspects] [Journal Article] 2020
Joshua Schultz, Bonni Dichone, Benjamin Cope
Since its debut over thirty years ago, cross-laminated timber (CLT) has become an increasingly popular construction material and in some instances has replaced reinforced concrete (RC) in building construction. Comparable strength-to-weight ratios of reinforced concrete and cross-laminated timber permit the materials to be used interchangeably, but their material properties and environmental performance vary considerably. CLT is increasingly being used as a primary structural material and since ...

Kinematic Behaviour of Cross Laminated Timber (CLT) Shearwalls with Openings
https://ruor.uottawa.ca/handle/10393/40929... [Mechanical Performance] [Thesis/Dissertation] 2020
Mestar, Mohammed
An integrated experimental and numerical research program investigating the elastic and inelastic performance as well as the kinematic behaviour of shearwalls with openings is presented in this study. The influence of the geometrical dimensions of the wall configurations and the mechanical properties and configurations of hold-downs on both elastic and inelastic behaviours including the possible kinematic modes of the shearwalls are investigated. The research also proposes the concept of equiva...

Optimization of cross-Laminated Timber as a Structural Building Material
https://broncoscholar.library.cpp.edu/handle/10211... [Design/Architectural aspects] [Thesis/Dissertation] 2020
Lemus, Noah
A semi-private structure to entertain hikers and enclose scientists is set between two bluffs. The objective was to span 48 with a structure that housed three individual platforms: look in, look up, and lookout....

Development of frequency curves for cross-laminated timber (CLT) floors using dynamic stiffness method
https://grafar.grf.bg.ac.rs/handle/123456789/2091... [Vibration/Acoustic Performance] [Conference Paper] 2020
Marjanović, Miroslav; Jugović, Verica; Nefovska-Danilović, Marija
Cross-laminated timber (CLT) panels have an increasing market share and extensive application in civil engineering practice, as full size walls or floor structures. CLT provides a compelling alternative to the concrete and steel (as conventional building materials), providing a low carbon footprint and comfortable living conditions. However, the orthotropic elastic material behavior of wood and the crosswise lay-up yield a relatively complex kinematics of CLT, characterized by high shear deforma...