Full-Scale Fire Test of a Mass Timber Vertical Shaft in Support to Tall Wood Buildings Canadian Initiative
https://repositum.tuwien.ac.at/obvutwoa/content/pa... [Fire Performance] [Conference Paper] 2016
Lindsay Ranger, Joseph Su, Christian Dagenais
A full-scale demonstration fire was conducted at National Research Council Canada (NRCC) to show that a 2-hr non-standard severe design fire in an apartment would have little or no effect on an adjacent elevator or stair shaft. The test was performed to support the approval of an alternative solution for a deemed-to-satisfy 2-hr noncombustible construction assembly, intended for the construction of a tall wood building in Quebec City (Canada). Throughout the duration of the fire no impact was ob...

Full Scale Shake Table Tests on Five Story and Three Story CLT Building Structures
https://repositum.tuwien.ac.at/obvutwoa/content/pa... [Seismic Performance] [Conference Paper] 2016
Naohito Kawai, Tatsuya Miyake, Motoi Yasumura, Hiroshi Isoda, Mikio Koshihara, Shiro Nakajima, Yasuhiro Araki, Takafumi Nakagawa, Motoshi Sato
The national research project to investigate proper structural design method for CLT (Cross Laminated Timber) buildings has been advanced by the subsidy of the Ministry of Land, Infrastructure, Transport and Tourism of Japan since 2011. This paper provides the outline of shake table tests executed as a part of the project in February 2015. Two specimens, one (Specimen A) is five story and another (Specimen B) is three story, were tested. As the result, for both specimens damage was rather slight...

Further Development of Cross-Laminated Timber (CLT) – Mechanical Tests on 45° Alternating Layers
https://repositum.tuwien.ac.at/obvutwoa/content/pa... [Mechanical Performance] [Conference Paper] 2016
Dietrich Buck, Alice Wang, Olle Hagman, Anders Gustafsson
In this paper, a series of experimental bending and compression tests have been performed on cross laminated timber (CLT) products with ±45° alternating layers, in order to evaluate their performance against conventional panels of 90° orientation. Engineered wood products as CLT with ±45° alternating layers can provide opportunities for greater use in larger and sustainable timber constructions. A total of 40 panels, manufactured in an industrial CLT production line with either of these two conf...

Group Action of Axially-Loaded Screws in the Narrow Face of Cross Laminated Timber
https://repositum.tuwien.ac.at/obvutwoa/content/pa... [Connectors] [Conference Paper] 2016
Reinhard Brandner
Withdrawal properties of axially-loaded groups of screws in the narrow face of cross laminated timber (CLT) are investigated by means of a stochastic approach based on a single screw model which provides a complete stochastic description of the load-displacement curve. Different group dimensions and configurations are analysed, featuring screws with equal or different thread-fibre angles. The stochastic approach is successfully verified by tests. Influences caused by shortcomings in assembling a...

Heat Transfer Through Mass Timber Connections
https://repositum.tuwien.ac.at/obvutwoa/content/pa... [Connectors] [Conference Paper] 2016
Andrea Lawton, Richard Emberley, José Torero
The advance in mass timber products has allowed buildings to be revolutionised. Medium rise buildings can utilise these panels as the main structural components achieving suitable strength and rigidity. Structural connections often pose the weakest element in timber construction and having an understanding of how they perform structurally in ambient as well as in fire conditions is important. This research paper presents an analysis of heat transfer through mass timber connections with boundary ...

High-Capacity Hold-Down for Tall Timber Buildings
https://repositum.tuwien.ac.at/obvutwoa/content/pa... [Connectors] [Conference Paper] 2016
Xiaoyue Zhang, Marjan Popovski, Thomas Tannert
The structural use of wood in North America is dominated by light wood-frame construction used in low-rise and more recently in mid-rise residential construction. Mass timber engineered wood products such as laminated-veneer-lumber and cross-laminated timber panels enable use of wood in tall and large wood-hybrid buildings. The prospect of building larger and taller timber structures creates challenges, one of them being the increase in lateral forces created by wind and earthquakes, thus requir...

Hybrid Beech and Spruce Cross-Laminated Timber
https://repositum.tuwien.ac.at/obvutwoa/content/pa... [Raw Materials] [Conference Paper] 2016
Simon Aicher, Maren Hirsch, Zachary Christian
The paper deals with the rolling shear properties of beech wood for cross-layers in hybrid crosslaminated timber. Rolling shear modulus and strength were determined by three different approaches being two-plate shear tests with single beech board slabs and compression shear and bending tests with hybrid CLT specimens acc. to FprEN 16351. The specimens were cut from two industrially manufactured hybrid 3-layered CLT-plates with a beech cross-layer and outer layers of spruce. The rolling shear mod...

Hybrid Cross Laminated Timber Plates (HCLTP) – Numerical Optimisation Modelling and Experimental Tests
https://repositum.tuwien.ac.at/obvutwoa/content/pa... [Alternative/Hybrid Configurations] [Conference Paper] 2016
Iztok Sustersic, Bostjan Brank, Bruno Dujic, Jaka Brezocnik, Igor Gavric, Simon Aicher, Gerhard Dill-Langer, Wolfgang Winter, Alireza Fadai, Thomas Demschner, Gregor Ledinek
This paper presents the development of two new types of hybrid cross-laminated timber plates (HCLTP) with an aim to improve structural performance of existing cross-laminated timber plates (Xlam or CLT). The first type are Xlam plates with glued timber ribs and the second type are Xlam plates with a concrete topping. A numerical optimisation was performed to study optimal plate setups in terms of ultimate limit state and serviceability limit state requirements. The numerical outcomes served as i...

Hysteretic Behaviour of Metal Connectors for Hybrid (High- and Low-Grade Mixed Species) Cross Laminated Timber
https://repositum.tuwien.ac.at/obvutwoa/content/pa... [Connectors] [Conference Paper] 2016
Vahid Mahdavifar, André Barbosa, Arijit Sinha, Lech Muszynski, Rakesh Gupta
Previous studies have shown that Cross-laminated Timber (CLT) buildings can perform well in seismic loading and are recognized as the essential role of connector performance in structural design, modelling, and analysis of CLT buildings. When CLT is composed of high-grade/high-density layers for the outer lamellas and low-grade/low-density for the core of the panels, the CLT panels are herein designated as hybrid CLT panels as opposed to conventional CLT panels that are built using one lumber ty...

Influence of Connection Systems on Serviceability Response of CLT Timber Flooring
https://repositum.tuwien.ac.at/obvutwoa/content/pa... [Connectors] [Conference Paper] 2016
Caitríona Uí Chúláin, Karol Sikora, Annette Harte
In this paper finite element analysis of a five layer cross-laminated timber (CLT) rectangular floor is presented. The model was developed using 3D shell elements with linear elastic orthotropic material properties. Support conditions analysed included fully fixed, semi-rigid and simply supported, and both one and two-way span conditions were considered. For each case, the serviceability deflection was determined from a static small displacement analysis and the first three natural frequencies b...

Cross-Laminated Timber (CLT) Archives - Archpaper.com
https://archpaper.com/tag/cross-laminated-timber... [Markets] [Magazine/Newspaper Article] 2019
Various
Posts tagged with "Cross-Laminated Timber (CLT)"...

Seismic performance of core-walls for multi-storey timber buildings
http://db.nzsee.org.nz/2014/poster/6_Dunbar.pdf... [Tall Buildings] [Conference Paper] 2014
A.J.M. Dunbar, S. Pampanin, A.H. Buchanan
This paper describes the results of experimental tests on two post-tensioned timber core-walls tested under bi-directional quasi-static seismic loading. The half-scale two-storey test specimens included a stair with half-flight landings. The use of Cross-Laminated Timber (CLT) panels for multi-storey timber buildings is gaining popularity throughout the world, especially for residential construction. Post-tensioned timber core-walls for lift-shafts or stairwells can be used for seismic resistanc...

Auto-Extinction of Engineered Timber as a Design Methodology
https://repositum.tuwien.ac.at/obvutwoa/content/pa... [Fire Performance] [Conference Paper] 2016
Alastair Bartlett, Rory Hadden, Luke Bisby, Barbara Lane
Engineered timber products such as cross-laminated timber (CLT) are gaining popularity with designers due to attractive aesthetic, sustainability, and constructability credentials. The fire behaviour of such materials is a key requirement for buildings formed predominantly of exposed, structural timber elements. Whilst design guidance focuses on the residual structural capacity of timber elements exposed to a ‘standard fire’, the fundamental characteristics of CLT’s performance in fire, such as ...

Bending and Rolling Shear Capacities of Southern Pine Cross Laminated Timber (CLT)
https://repositum.tuwien.ac.at/obvutwoa/content/pa... [Raw Materials] [Conference Paper] 2016
Mengzhe Gu, Weichiang Pang, Michael Stoner
Compared to European countries, the use of Cross Laminated Timber (CLT) in the United States is small and usually limited to custom projects. The CLT panels used in the US are typically imported from Europe and Canada since CLT has not yet become established in the US. This paper presents the preliminary structural test results of CLT panels manufactured using the North America Southern Pine, which is the most widely planted tree species in the US. The performance data of strong-axis bending and...

Bending Properties of Cross Laminated Timber with Layer Arrangement Using Different Species
https://repositum.tuwien.ac.at/obvutwoa/content/pa... [Raw Materials] [Conference Paper] 2016
Sun-Hyang Park, Keon-Ho Kim, Sang-Joon Lee, Sung-Jun Pang
To evaluate the bending performance of the cross laminated timber (CLT) as the structural board materials using domestic species, the delamination test and the transverse bending test were conducted. The CLT consisted of 3 layers of laminated timber and the species of timber was Japanese larch and Korean red pine. The arrangements for lamination were divided on species of layer and grades of laminae. The loading directions of the bending test were parallel and perpendicular to width direction of...

Bending Stiffness and Capacity of Multilayered Structures
https://repositum.tuwien.ac.at/obvutwoa/content/pa... [Mechanical Performance] [Conference Paper] 2016
Thomas Moosbrugger, Theodor Guggenberger, Harald Krenn
Within this paper the influence of the cracked tension zone of 2 and 3 layered plates on the bending stiffness is investigated. Therefor theoretical investigations and practical tests on multilayered plates with one to three layers were performed. ...

Significant Wood Design and Construction Changes to the 2018 IBC and NDS-BCD121
https://awc.org/pdf/education/bcd/AWC-BCD121-2018_... [Standards/Building code] [Standard] 2018
Michelle Kam-Biron, Lori Koch
The 2018 International Building Code (IBC) published by the International Code Council and the National Design Specification® (NDS) for Wood Construction published by the American Wood Council are both now available. This presentation will provide an overview of the significant changes to wood design and construction provisions relative to previous editions and include design examples. Most of the changes in the NDS are a result of the adoption of the ASCE/SEI Standard 7-16 Minimum Design Loads ...

Experimental analysis of cross-laminated timber panels in fire
https://www.researchgate.net/publication/229363736... [Fire Performance] [Journal Article] 2009
Andrea Frangi, Mario Fontana, Erich Hugi, Robert Jübstl
Design models of timber structures in fire usually take into account the loss in cross-section due to charring of wood. For cross-laminated timber panels in fire only little information on charring is available. The paper describes and discusses the results of an extensive testing programme on the fire behaviour of cross-laminated timber panels under ISO-fire exposure. The fire tests were performed on the small horizontal furnace (1.0×0.8 m) at the Empa in Duebendorf. Particular attention is giv...

Seismic drift demands in multi-storey cross-laminated timber buildings
https://www.researchgate.net/publication/320624915... [Seismic Performance] [Journal Article] 2017
Cagatay Demirci, Christian Málaga-Chuquitaype, L. Macorini
This paper investigates the seismic response of multi-storey cross-laminated timber (CLT) buildings and its relationship with salient ground-motion and building characteristics. Attention is given to the effects of earthquake frequency content on the inelastic deformation demands of platform CLT walled structures. The response of a set of 60 CLT buildings of varying number of storeys and panel fragmentation levels representative of a wide range of structural configurations subjected to 1656 real...

Application of a Translational Tuned Mass Damper Designed by Means of Genetic Algorithms on a Multistory Cross-Laminated Timber Building
https://www.researchgate.net/publication/281692633... [Seismic Performance] [Journal Article] 2017
Guillaume Hervé Poh’sié, Corrado Chisari, Giovanni Rinaldin, Massimo Fragiacomo, Claudio Amadio, Ario Ceccotti
This paper presents a numerical study conducted on a seven-story timber building made of cross-laminated (X-lam) panels, equipped with a linear translational tuned mass damper (TMD). The TMD is placed on the top of the building as a technique for reducing the notoriously high drifts and seismic accelerations of these types of structures. TMD parameters (mass, stiffness, and damping) were designed using a genetic algorithm (GA) technique by optimizing the structural response under seven recorded ...