Design of UFP-coupled post-tensioned timber shear walls
https://www.researchgate.net/publication/277102227... [Seismic Performance] [Journal Article] 2011
M.P. Newcombe, Dion Marriott, Weng Yuen Kam, Stefano Pampanin, A.H. Buchanan
Recent advances in timber design at the University of Canterbury have led to new structural systems that are appropriate for a wide range of building types, including multi-storey commercial office structures. These buildings are competitive with more traditional construction materials in terms of cost, sustainability and structural performance. This paper provides seismic design recommendations and analytical modelling approaches, appropriate for the seismic design of post-tensioned coupled tim...

In Plattenebene beanspruchte Biegeträger aus Brettsperrholz
https://www.researchgate.net/publication/283974111... [Mechanical Performance] [Journal Article] 2015
Marcus Flaig
CLT beams loaded in plane direction – Part 2: Tapered CLT beams and CLT beams with holes or notches Based on Eurocode 5 equations for the calculation of strength reduction factors for glulam beams, a method to determine the bending strength of CLT beams with tapered edges is presented. The strength properties of CLT beams needed as input values are defined in dependence of the beam layup taking into account possible failure modes. For CLT beams with holes or notches stress based design approache...

Nordic - MemberMill - APA – The Engineered Wood Association
https://www.apawood.org:443/MemberMill?MemberMillI... [Commercial/Company Information] [Web Page] 2019
APA
APA – The Engineered Wood Association Skip over navigation The leading resource for information about engineered wood products Technical Research Manufacturer Directory Contact Products Plywood Oriented Strand Board (OSB) Specialty Panels Concrete Form Panels Overlaid (HDO/MDO) Siding Radiant Barrier Panels Industrial End-Use Glulam I-Joist Rim Board Cross-Laminated Timber (CLT) Structural Composite Lumber (SCL) Laminated Veneer Lumber (LVL) Parallel Strand Lumber (PSL) Laminated Strand Lumber ...

Fire Safe Glued Massive Timber Members Adhesive Bonding Performance under Elevated Temperature-Tests Report
http://team.sites.olt.ubc.ca/files/2018/04/TEAM-20... [Bonding/Adhesives] [Report] 2013
Chao (Tom) Zhang, Huijun Yan, George Lee, Frank Lam
This project was conducted to quantify the performance of adhesives bond lines under shear load subject to elevated temperature. The results add to the understanding of the performance of polyurethane adhesive bond lines under elevated temperatures to address areas of fire safety concern under the current building codes. The project focused on studying the shear bond capacity of three wood species by using 3 types of adhesives with/without nanoclay treatment at 4 temperature levels. The three wo...

Equivalent stiffness of timber used in CLT: closed-form estimates and numerical validation
https://link.springer.com/content/pdf/10.1007%2Fs0... [Mechanical Performance] [Journal Article] 2019
Olivier Perret, Arthur Arthur Lebée, Cyril Douthe, Karam Karam Sab
In this paper, a closed-form approach is presented to estimate rapidly the equivalent stiffness of boards used in cross laminated timber (CLT) panels from local orthotropic behavior at ring scale for varying sawing patterns. It is first assumed that narrow edges are glued. In this case, closed-form Reuss and Voigt bounds are derived for the equivalent layer behavior of CLT. An application to Norway spruce boards is presented and reveals that the cross-layer (rolling) shear behavior lies between ...

Seismic Performance of Cross-Laminated Timber Panel Buildings Buildings with Dissipative Connections
http://www.iitk.ac.in/nicee/wcee/article/WCEE2012_... [Connectors] [Conference Paper] 2012
M. Latour, G. Rizzano, G. Torello
Cross-laminated timber panel buildings are gaining a growing interest of the scientific community due to significant technical advantages, such as the material sustainability, the high fire resistance and quickness of erection. Nevertheless, it is well known that timber panels themselves are not able to dissipate a significant amount of energy during an earthquake. In fact, in this system the seismic design is carried out in order to dissipate the energy by means of inelasticity of connections. ...

Experimental study of fire-induced-delamination of cross laminated timber
https://www.researchgate.net/publication/331257083... [Fire Performance] [Journal Article] 2019
Birgit Östman, Joseph Su, Amanda Kimball, Matthew Hoehler
Cross Laminated Timber (CLT) is increasingly used as a structural material for tall buildings, due to its structural properties and low carbon footprint. CLT is a mass timber product, which is made by crosswise gluing layers of timber lamellae. Recent architectural trends include having visible CLT surfaces, which, in the event of a fire, can become involved in the fire and act as fuel to the fire. A study by the Fire Protection Research Foundation (FPRF; USA), National Fire Protection Agency (N...

Procedures for seismic characterization of traditional and modern wooden building types
https://www.researchgate.net/publication/301360218... [Seismic Performance] [Journal Article] 2016
Ario Ceccotti, Milena Massari, Luca Pozza
The paper analyzes different wooden buildings types used in past and nowadays to realized Low-Rise and Mid-Rise timber structures from the seismic point of view. A preliminary overview about the procedures prescribed by codes for the seismic characterization of the timber building systems is given. Then the definition of the behaviour Q-Factor in the literature and its relevance in design of structures in seismic areas is treated. Available research methods for estimating the Q-Factor based on t...

Displacement-Based seismic design of timber Structures
https://www.researchgate.net/publication/271326576... [Seismic Performance] [Thesis/Dissertation] 2011
Cristiano Loss
The research is aimed at developing seismic methods for the design and evaluation of the seismic vulnerability of wooden structures, using a displacement-based approach. After a brief introduction on the seismic behaviour of timber structures, the general Direct Displacement-Based Design (Direct-DBD) procedure and the state-of-the-art are presented, with clear reference to the application of the Direct-DBD method to wooden buildings. The strength of the Direct-DBD method is its ability to design...

Fire Design Concepts for Tall Timber Buildings
https://www.researchgate.net/publication/233523723... [Fire Performance] [Journal Article] 2008
Andrea Frangi, Mario Fontana, Markus Knobloch
Based on the current knowledge in the area of fire design of timber structures this paper presents a generic fire safety concept for tall timber buildings. The first part of the paper gives an overview of fire action and fire safety concepts and presents the main differences between medium-rise and tall buildings with regard to fire safety. The analysis enables the formulation of a generic fire safety concept for tall timber buildings. In the second part of the paper some experimental results on...

Study of Massive Timber Walls based on NLT and Post Laminated LVL
http://team.forestry.ubc.ca/files/2018/05/TEAM-Rep... [Alternative/Hybrid Configurations] [Report] 2018
Chao (Tom) Zhang, George Lee, Frank Lam
Currently the massive timber shear walls are mainly made from Cross Laminated Timber (CLT), which possesses a high in-plane shear strength and rigidity. But only part of its elements (mainly the vertically aligned laminae) are engaged in carrying the vertical load and that could be a limitation when designing taller timber structures or wherever higher vertical load is present. This project studied alternative solutions to massive timber shear wall system, based on Nailed Laminated Timber (NLT) ...

Acoustically-Tested-Mass-Timber-Assemblies-WoodWorks.pdf
http://www.woodworks.org/wp-content/uploads/Acoust... [Vibration/Acoustic Performance] [Report] 2019
WoodWorks
Following is a list of mass timber assemblies that have been acoustically tested as of January 23, 2019. Sources are noted at the end of this document. For free technical assistance on any questions related to the acoustical design of mass timber assemblies, or free technical assistance related to any aspect of the design, engineering or construction of a commercial or multi-family wood building in the U.S., email help@woodworks.org or contact the WoodWorks Regional Director nearest you: http://...

Cross Laminated Timber Construction For Resisting Lateral Loads On Six Level Buildings
http://www.timberdesign.org.nz/wp-content/uploads/... [Seismic Performance] [Journal Article] 2018
John Chapman
The authors intention is to contribute to the general discussion on timber multi-level commercial buildings. Interest in this topic is expected due to the environmental advantages of timber construction when compared to concrete and steel. This paper looks into three timber based systems for resisting lateral loads for buildings to six storeys, that will ensure relatively open floor spaces. In this paper, three proposed lateral load resisting systems are termed frame, circular core, and shear wa...

Low cycle fatigue tests and damage accumulation models on the rolling shear strength of cross-laminated timber
https://rd.springer.com/content/pdf/10.1007%2Fs100... [Mechanical Performance] [Journal Article] 2016
Yuan Li, Frank Frank Lam
This paper presents a study on rolling shear damage accumulation and duration of load of cross-laminated timber (CLT) with low cycle fatigue tests. The study of the duration-of-load (DOL) effect on strength properties of wood products is typically challenging; it may be more challenging for non-edge-glued CLT considering crosswise layups of wood boards, existing gaps, and non-uniform stress distributions in cross layers. In experimental studies, short-term ramp loading tests and low cycle trapez...

Blast-Resistant Testing for Loaded Mass Timber Structures
https://www.apawood.org/data/sites/1/documents/tec... [Other] [Report] 2017
Christopher (Adam) Senalik, Lisa Podesto
Based on live blast testing done with 2015 Wood Innovations Grant funding, we know that cross-laminated timber (CLT) can compete with light gauge metal, prestressed precast concrete panels, and masonry. However, testing previously completed was on structures carrying only their own weight. This project will provide necessary test data to characterize the response of CLT structures with superimposed dead/live loads under blast loading, establishing the inelastic and ultimate response limits, whil...

Durability of Mass Timber Structures: A Review of the Biological Risks
https://www.fpl.fs.fed.us/documnts/pdf2018/fpl_201... [Moisture/Durability] [Journal Article] 2018
J.Y. Wang, R. Stirling, Paul I. Morris, A. Taylor, J. Lloyd, S. Lebow, M.E. Mankowski
Mass timber structures have the potential to change wooden construction on a global scale. Numerous mass timber high-rise buildings are in planning, under development or already built and their performance will alter how architects and engineers view wood as a material. To date, the discussion of material durability and biodegradation in these structures has been limited. While all materials can be degraded by wetting, the potential for biodegradation of wood in a mass timber building requires s...

Japan Kobe Earthquake Shake Table Simulation
http://www.timberdesign.org.nz/wp-content/uploads/... [Seismic Performance] [Journal Article] 2018
Pierre Quenneville, Hugh Morris
On October 23rd 2007, a seven storey Cross Laminated Timber building was tested on the world’s largest earthquake shake table at Miki near Kobe in Japan. Cross laminated timber construction and the preliminary earthquake and fire tests are overviewed. The huge E-Defense shake table facility in Japan and the test building are described and the earthquake records used to test the building. The building performed well when subjected to the severe Kobe earthquake record. It had some minor softening ...

Mechanics of Cross-Laminated Timber
http://ltu.diva-portal.org/smash/get/diva2:1205877... [Mechanical Performance] [Thesis/Dissertation] 2018
Dietrich Buck
Increasing awareness of sustainable building materials has led to interest in enhancing the structural performance of engineered wood products. Wood is a sustainable, renewable material, and the increasing use of wood in construction contributes to its sustainability. Multi-layer wooden panels are one type of engineered wood product used in construction. There are various techniques to assemble multi-layer wooden panels into prefabricated, load-bearing construction elements. Assembly techniques ...

Influence of wall assembly on behaviour of cross-laminated timber buildings
https://www.researchgate.net/publication/273895765... [Connectors] [Journal Article] 2015
Luca Pozza, Roberto Scotta
This paper describes a new wood-joint numerical model which applies commercial software and illustrates how it can be used for reliable estimation of appropriate behaviour factor (q) in multi-storey, cross-laminated timber buildings. The model is based on a macro-element approach and can reproduce the load–displacement hysteretic response of the steel–wood and wood–wood joints typically used in such structures. The panels are regarded as elastic and all non-linearities are assumed to take place ...

100 UK CLT Projects | Think Wood
https://www.thinkwood.com/clt100book... [Markets] [Book/Book Section] 2018
Waugh Thistleton Architects
This book is a study of the 100 of the most significant buildings constructed from CLT in the United Kingdom over the past 15 years. Authors Andrew Waugh and Anthony Thistleton of Waugh Thistleton Architects have contacted a wide range of individuals and businesses to interview them about their experiences building in CLT to help inform this book....