Fire Resistance Characteristics of Glued Laminated Timber Manufactured from Malaysian Tropical Hardwood Timber (Malagangai) : Charring Rate and Fire Classification
https://uitm.pure.elsevier.com/en/publications/fir... [Raw Materials] [Conference Paper] 2016
Zakiah Ahmad, Simon Aicher, Zulhazmee Bakri
This paper reports the investigation on the one-dimensional charring rate of glued laminated timber manufactured from Malaysian Tropical Hardwood namely Malagangai (density, 800 kg/m3). The fire test was conducted at SP Wood Technology in Stockholm in accordance with EN 13381-7:2014 for determination of charring rate. The reaction-to-fire tests for fire classifications in terms of flame spread, smoke production and burning droplets were investigated at University of Stuttgart, Germany in accorda...

The Production of Hardwood X-Lam Panels to Valorise the Forest-Wood Chain in Piemonte (Italy)
http://www.academia.edu/891059/THE_PRODUCTION_OF_H... [Raw Materials] [Conference Paper] 2010
Guido Callegari, Corrado Cremonini, Valeria Marta Rocco, Antonio Spinelli, Roberto Zanuttini
The work fits in the framework of the increasing interest on the structural use of wood-based materials by Italian companies and research groups; it describes the preliminary steps of a project about the production and testing of new hardwood panels of the X-Lam type made with local timber, equipment and skills available at regional level....

Dalston Works the World's Largest CLT Building
http://waughthistleton.com/dalston-works/... [Case Study/Projects] [Web Page] 2017
Waugh Thistleton
Dalston Works is the world’s largest CLT building, and a landmark project in our ambition to roll out the use of timber construction in high-density urban housing, across London and beyond. The ten-storey, 121-unit development is made entirely of CLT, from the external, party and core walls, through to the floors and stairs, weighing a fifth of a concrete building of this size, and reducing the number of deliveries during construction by 80 per cent....

A proposal to transform the parisian skyline and define a new era of carbon-neutral building in France
http://mg-architecture.ca/news/a-proposal-to-trans... [Tall Buildings] [Magazine/Newspaper Article] 2016
MGA News
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A mathematical model for the sustainability of the use of cross-laminated timber in the construction industry: the case of Spain
https://link.springer.com/content/pdf/10.1007%2Fs1... [Raw Materials] [Journal Article] 2014
Mario Fernández, Arturo Martínez, Adolfo Alonso, Laura Lizondo
In recent years, computerized mathematical modelling has enabled construction-related problems to be resolved and predictions to be made regarding the behaviours of buildings and their environments in a more rigorous fashion than was the case with the deterministic models used until now. This model enables the analysis of a simulation of the sustainability of the use of timber as a major structural component in construction. Thus, using a unique model, which could be adapted to the particular ch...

Cross-laminated Timber Panels from Low-value Northeastern Woods
http://www.nsf.gov/awardsearch/showAward?AWD_ID=15... [Case Study/Projects] [Others] 2015
Peggi Clouston, Sanjay Arwade, Alexander Schreyer
Cross laminated timber is a processed building material that is opening up new opportunities for wood in the construction industry. Made from lumber glued together in crosswise layers, the material is used in floor, roof, and wall assemblies in building construction. The product is an environmentally friendly alternative to steel and concrete. Its composite nature is forgiving of defects to an extent, making it a promising construction material of varied quality, small-diameter, and environmenta...

Sustainable construction for urban infill development using engineered massive wood panel systems
http://www.mdpi.com/2071-1050/4/10/2707/htm... [Environmental Performance] [Journal Article] 2012
Steffen Lehmann
Prefabricated engineered solid wood panel construction systems can sequester and store CO2. Modular cross-laminated timber (CLT, also called cross-lam) panels form the basis of low-carbon, engineered construction systems using solid wood panels that can be used to build residential infill developments of 10 storeys or higher. Multi-apartment buildings of 4 to 10 storeys constructed entirely in timber, such as recently in Europe, are innovative, but their social and cultural acceptance in Austral...

Vibration properties of a timber floor assessed in laboratory and during construction
https://www.sciencedirect.com/science/article/pii/... [Vibration/Acoustic Performance] [Journal Article] 2015
Krisi Jarnerö, Anders Brandt, Anders Olsson
Natural frequencies, damping ratios and mode shapes of a prefabricated timber floor element have been assessed experimentally in laboratory with different boundary conditions and in situ (in field) at different stages of construction. In laboratory the change in modal parameters was studied with free-free boundary conditions and simply supported on two sides. Three different simply supported tests with changes in boundary conditions were carried out; the floor placed on the support without any f...

Using Small Diameter Logs for Cross-Laminated Timber Production
https://www.ncsu.edu/bioresources/BioRes_10/BioRes... [Raw Materials] [Journal Article] 2015
Magnus Fredricksson, Peter Bomark, Olof Broman, Anders Gronlund
Sawing small diameter logs results in lower yield compared to sawing large diameter logs. This is due to geometry; fitting rectangular blocks inside an approximately cylindrical shape is more difficult for small than for large diameters. If small diameter logs were sawn in a way that follows the outer shape, yield would increase. The present study considers whether this can be done by sawing flitches into trapeze shapes. These can be glued together into rectangular products. Cross laminated timb...

XLam opens Aust’s first factory for CLT
http://www.afr.com/real-estate/xlam-opens-austs-fi... [Commercial/Company Information] [Magazine/Newspaper Article] 2016
Nick Lenaghan
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Influence of Wood Moisture Content on Bending and Shear Stiffness of Cross Laminated Timber Panels
https://link.springer.com/content/pdf/10.1007%2Fs0... [Moisture/Durability] [Journal Article] 2011
Arne Gulzow, Klaus Richter, Rene Steiger
The bending and shear stiffness of cross-laminated timber (CLT) made from softwood depend on the moisture content of the panel. In principle, the stiffness properties drop with increasing moisture content within the hygroscopic range. However, swelling provokes closing of open gaps of the middle layers and leads to an apparent increase of stiffness due to internal friction. This increase in stiffness is only relevant for low deflections and can provoke misinterpretation of measuring results when...

New timber technology a game-changer for Singapore
http://www.eco-business.com/news/new-timber-techno... [Markets] [Magazine/Newspaper Article] 2014
Celine Lim
Australian developer Lend Lease is introducing Cross Laminated Timber technology to Singapore, which promises productivity and cost savings in addition to environmental benefits....

Effective Bonding Parameters for Hybrid Cross-Laminated Timber (CLT)
http://ir.library.oregonstate.edu/xmlui/handle/195... [Bonding/Adhesives] [Thesis/Dissertation] 2017
Blake Larkin
Cross-laminated timber (CLT) is a massive engineered wood product made of orthogonally bonded layers of solid-sawn lumber, and is intended for roof, floor, or wall applications. Although it was developed in Europe in the early 90s, CLT is relatively new to North America. CLT products must be certified for structural use. First North American product standard stipulating test methods and qualification criteria for benchmark structural properties and adhesive bond integrity in structural CLT is AN...

The First Cross Laminated TImber School in the US: A Builder’s Perspective
http://www.woodworks.org/wp-content/uploads/14WS09... [Case Study/Projects] [Presentation] 2016
Charles Judd
The Pendleton County School District in West Virginia is the first in the United States to build a new school in cross laminated timber. With panels for the 40,000-square-foot facility installed in less than three months by a crew of five carpenters and a crane operator, CLT represents a new world of opportunity for the growing district. In this presentation, the CLT erector for the project will discuss the advantages and challenges of using this new material in the context of structure, buildin...

Feasibility of Taller Timber in an Urban US Market: Pacific Northerst Cross Laminated Timber (CLT) Feasibility Report
http://www.woodworks.org/wp-content/uploads/TTBW-2... [Tall Buildings] [Presentation] 2014
Joseph Mayo, Chris Duvall
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Evaluation of Thermal Performance, Environemntal Impact, and Cost Effectiveness of an ELam Component for Retrofitting in Existing Buildings
https://link.springer.com/content/pdf/10.1007/978-... [Moisture/Durability] [Book/Book Section] 2017
Tiziano Dalla Mora, Allesandro Righi, Fabio Peron, Piercarlo Romagnoni
Renovation and retrofitting of residential buildings is a subject of great concern in Italy: most of the existing building stock is completely inappropriate in terms of structural rigidity in the event of earthquakes and with respect to the objectives of energy efficiency set by European law. This research presents the design of an innovative system of structural reinforcement using cross-laminated timber (CLT) technology based on materials with environmental compatibility: an XLam panel comes a...

Lateral Connection Behavior of Molded Core Sandwich Panels with Self-Tapping Screws
https://wfs.swst.org/index.php/wfs/article/view/24... [Connectors] [Journal Article] 2016
Daniel Way, Tahir Akgul, Ian Morrell, Arijit Sinha
This study investigated lateral connection behavior of a single shear connection between a molded core sandwich panel produced with wood strands, and solid sawn lumber. A continuous thread self-tapping screw and common nail were the fasteners evaluated. Connection assemblies with self-tapping screws showed much greater stiffness, yield load, and load-carrying capacity than nailed assemblies, indicating that self-tapping screws may be a viable option for connections between wood-based molded core...

Wood Innovation and Design Centre Project
http://www.partnershipsbc.ca/files-4/documents/201... [Case Study/Projects] [Brochure/Product Sheet] 2013
Partnership BC
The Wood Innovation and Design Centre (WIDC) in Prince George will showcase British Columbia’s expertise and global reputation as a leader in wood construction and design, and engineered wood products. Its construction will catalyze new wood product development, commercialization, and adoption....

The North American Product Standard for Cross-Laminated Timber
https://www.fpl.fs.fed.us/documnts/pdf2012/fpl_201... [Standards/Building code] [Journal Article] 2012
Borjen Yeh, Sylvian Gagnon, Tom Williamson, Ciprian Pircu, Conroy Lum, Dave Kretschmann
Cross-laminated timber (CLT) is a prefabricated solid engineered wood product made of at least three orthogonally bonded layers of solid-sawn lumber or structural composite lumber that are laminated by gluing of longitudinal and transverse layers with structural adhesives to form a solid rectangular-shaped, straight, and plane timber intended for roof, floor, or wall applications. While this engineered wood product has been used in Europe for over 15 years, the production of CLT and design of CL...

Lateral Load-Carrying Connection Propertiees and Withdrawl Capactiy of Hybrid Poplar
https://wfs.swst.org/index.php/wfs/article/view/83... [Connectors] [Journal Article] 2014
Arijit Sinha, Diana G. Avila
An experimental study is reported aimed at determining the yield load, withdrawal capacity, and validity of National Design Specification (NDS) yield models on connections between hybrid poplar and common sheathing materials using a dowel-type fastener. Plantation-grown hybrid poplar (Pacific Albus) was procured, and connections with two different thicknesses of oriented strandboard and plywood were constructed using a dowel-type fastener. The NDS does not list connection design values for low-d...