WoodWorks Leads Blast Testing Project for Cross-Laminated Timber
http://www.woodworks.org/wp-content/uploads/WoodWo... [Fire Performance] [Others] 2016
WoodWorks
WoodWorks, in cooperation with the United States Forest Service and the Softwood Lumber Board, today conducted a series of live blast tests on three cross-laminated timber (CLT) structures at Tyndall Air Force Base. Although full analysis of testing results are not expected to be published until later this year, post-test observations were exciting. All structures remained intact with acceptable levels of damage under significant explosive loading. The results of this testing will be used to fur...

Bond quality of cross-laminated timber from Irish Sitka spruce
http://www.irishtimber.org/uploads/1/9/2/0/1920947... [Raw Materials] [Journal Article]
Karol Sikora, Annette Harte, Daniel Mcpolin,
The potential use of Irish-grown Sitka spruce for cross-laminated timber (CLT) manufacture is investigated as this would present new opportunities and novel products for Irish timber in the home and export markets. CLT is a prefabricated multi-layer engineered wood product made of at least three orthogonally bonded layers of timber. In order to increase rigidity and stability, successive layers of boards are placed crosswise to form a solid timber panel. Load-bearing CLT wall and floor panels ar...

CLT - Cross Laminated Timber Connections
http://www.clt.info/wp-content/uploads/2015/10/CLT... [Connectors] [Brochure/Product Sheet] 2014
Stora Enso
The present document shall provide a review of the most common CLT connection systems. This includes some design tables with graphs along with the analytical calculation of the design values, which shall help the reader to verify the design values and understand the provided connection analysis. The design was performed, according to EN 1995-1-1....

A component approach for the hysteretic behaviour of connections in cross‐laminated wooden structures
https://doi.org/10.1002/eqe.2310... [Connectors] [Journal Article] 2013
Giovanni Rinaldin, Claudio Amadio, Massimo Fragiacomo
In this paper, a numerical model to estimate the dissipative capacity and describe the cyclic response of cross‐laminated (X‐lam) timber buildings is presented. The connections between panels and to the foundation (metal hold‐downs and angle brackets, and screwed connectors) are modelled with nonlinear hysteretic multispring elements taking into account the strength interaction between different degrees of freedom according to a predefined domain. The timber components (solid X‐lam floors and wa...

Full-Scale Tests in a Furnished Living Room to Evaluate the Fire performance of protected Cross-Laminated and Nail-Laminated Timber Construction
http://www.awc.org/pdf/awc/AWC-NLT_CLT_Compartment... [Fire Performance] [Report] 2015
Marc Janssens
The objective of the two tests described in this report was to evaluate the performance of cross-laminated timber (CLT) and naillaminated timber (NLT) construction protected with two layers of 5/8-in.(16-mm) type X gypsum board when exposed to the thermal environment of a severe living room fire for the American Wood Council (Client), located in Leesburg, Virginia. The tests were conducted on September 3 and 15, 2015, at Southwest Research Institute’s (SwRI’s) Fire Technology De...

Preliminary CLT Fire Resistance Testing Report
http://www.awc.org/pdf/codeofficials/2012/Prelimin... [Fire Performance] [Report] 2012
Lindsay Osborne, Christian Dagenais. Noureddine Benichou
FPInnovations is involved in a large research project regarding CLT construction. One objective of this research is the creation of a design methodology for calculating the fire-resistance of CLT assemblies/construction. This methodology will foster the design of fire-safe buildings of wood or hybrid construction. In order to establish such calculation methods, a series of experimental tests has been undertaken. A total of eight full-scale CLT fire resistance tests have been conducted at the NRC...

Tall Wood Structures: Fire Resistance Design Primer for Mass Timber Construction – DES602
http://www.awc.org/pdf/education/des/AWC-DES602-Fi... [Fire Performance] [Presentation] 2017
James B. Smith
This presentation examines how fire resistance ratings in the 2015International Building Code (IBC)apply to mass timber and heavy timber construction. Topics include how the IBCincorporates fire testing and calculation methods to quantify fire resistance as well as how various materials, including wood, behave when exposed to high temperatures in fires. Discussion will include code compliant calculation methods for fire resistance ratings of wood frame assemblies and for wood members exposed to ...

The Value Proposition for Cross-Laminated Timber
http://www.fpac.ca/wp-content/uploads/publications... [Markets] [Report] 2011
Pablo Crespell, Chris Gaston
As part of Bio-pathways II the team was asked to look in detail at the market for some of the technologies on the list. This was phrased as a deep dive and it was decided that the first deep dive should be made on Cross-laminated Timber (CLT) as it was one of the more promising technology options. This document contains that deep dive presented in a NABC format (Market Needs, Approach to Market, Benefits of the Products and Competition).CLT is a cost-competitive wood-based solution that complem...

Full-scale Mass Timber Shaft Demonstration Fire
https://www.mffp.gouv.qc.ca/publications/forets/en... [Fire Performance] [Report] 2015
Lindsay Osborne, Christian Dagenais
A full-scale demonstration fire was conducted at National Research Council Canada (NRC) to show how a mass timber vertical shaft, intended for an elevator or exit stair, could withstand a severe fire exposure lasting at least two (2) hours. Currently, Division B of the 2010 National Building Code of Canada (NBCC) [1] requires vertical exit stairs to be constructed using non-combustible construction and have a 2 h fire resistance rating (FRR) in buildings greater than 6-storeys. It is anticipated...

Structural Response of Mid-Rise Hybrid Building System Consisting of a Light Wood Frame Structure and Stiff Core
https://unbscholar.lib.unb.ca/islandora/object/unb... [Design/Architectural aspects] [Thesis/Dissertation] 2015
Lina Zhou
In low-rise multi-storey light wood frame buildings (LWFBs) (up to four-storey), the elevator shaft and stairwell cores made of reinforced concrete/masonry materials are usually designed separately from the wood frame. As the releasing of storey limit from four to six of residential LWFBs in the Province of British Columba since 2009,combination design consideration becomes an alternative way to utilize the lateral resistance of stiff cores. The uncertainty on seismic performance of these hybrid...

Innovative timber building systems: comparative testing and modelling of earthquake behaviour
https://link.springer.com/content/pdf/10.1007%2Fs1... [Seismic Performance] [Journal Article] 2018
C. Sandhaas, P. Schädle, Ario Ceccotti
Several innovative timber building systems were developed in the past few years, among which dowel-laminated timber, CLT with interspaces and prefabricated timber wall elements, whose design requires also verification of the lateral load-carrying system. Therefore, shear wall tests on these three building systems were carried out. Timber frame shear walls were also tested to compare load–displacement behaviour, failure modes and energy dissipation capacity. The four investigated systems exhibit ...

Cross-Laminated Timber in the USA: Opportunity for Hardwoods?
https://link.springer.com/article/10.1007/s40725-0... [Markets] [Journal Article] 2018
Omar Espinoza, Urs Buehlmann
Research on hardwood CLT is scarce, though findings from existing studies suggest that it is technically feasible and the resulting product offers interesting perspectives for specific applications. However, for hardwood CLT to become a reality, the hardwood industry needs to overcome significant challenges, some of which are discussed in this paper....

Inspiration through Innovation
http://www.woodworks.org/wp-content/uploads/UMass-... [Markets] [Report] 2017
WoodWorks
The goal for the John W. Olver Design Building at the University of Massachusetts Amherst was to create an innovative and inspired building that visibly demonstrates environmentally sensitive design. The result is one of the most advanced mass timber buildings in the United States, a four-story, 87,500-square-foot structure that exemplifies the University’s commitment to sustainability and, through generations of students who will learn within its walls, the future of the built environment....

Seismic Performance of Multi-Storey Timber Buildings TUGraz Building
http://www.series.upatras.gr/sites/default/files/f... [Seismic Performance] [Report] 2013
Alfredo Campos Costa, Paulo Xavier Candeias, Gerhard Schickhofer, Georg Flatscher
This document reports the outcome of the seismic test on the TUGraz building, the fourth in a total of four buildings included in the TIMBER BUILDINGS Project. This building is a cross-laminated system (CTL). The goal of the tests was to assess the seismic performance of the building, panel elements and steel connectors, defined in terms of relative displacements and hold-down forces....

Foresters welcome Government’s ambitious tree-planting target
https://forestryconnect.com/foresters-welcome-gove... [General Information] [Magazine/Newspaper Article] 2017
Forestry Connect
Farm foresters have joined forest owners and timber processors in welcoming the new Coalition Government’s plans to revitalise forestry as a shot in the arm for the industry. The New Zealand Farm Forestry Association believes the Government’s commitment to plant one billion trees over the next 10 years is an achievable target and that farm foresters have a role to play. “New Zealand needs to reverse its growing greenhouse gas emission status, it needs to plant more trees than are harvested for a...

Redstone Arsenal - Wood: Hospitality flair and performance
https://www.thinkwood.com/our-projects/redstone-ar... [Case Study/Projects] [Web Page] 2016
ThinkWood
The Redstone facility is the fourth CLT project Lendlease has delivered worldwide. The Redstone project consisted of 1,200 CLT panels, 11 columns, 44 beams, and more than 201,000 CLT fasteners. To meet Army requirements, CLT exterior wall panels are 5 inches thick, with 3- and 4-inch interior walls, and 7-inch-thick floor slabs. The project delivered in March 2016. To meet Candlewood Suites brand standards, the CLT walls and floors are covered in gypsum board and carpet, encapsulating the timber...

Overview of a Project to Quantify Seismic Performance Factors for Cross Laminate
https://doi.org/10.1007/978-94-007-7811-5_49... [Seismic Performance] [Book/Book Section] 2014
M. Omar Amini, John W. van de Lindt, Shiling Pei, Douglas Rammer, Phil Line, Marjan Popovski
Cross-laminated Timber (CLT) has been extensively used in Europe and is now gaining momentum in North America; both Canada and more recently the U.S. Construction projects have shown that CLT can effectively be used as an alternative construction material in mid-rise structures and has significant potential in commercial and industrial buildings. In the United States, the CLT system is not currently recognized in seismic design codes and therefore a seismic design can only be performed through a...

Green Resources
https://www.apawood.org:443/green-resources... [Markets] [Web Page]
APA
The American Wood Council (AWC) and Canadian Wood Council (CWC) have published six environmental product declarations (EPDs) for laminated veneer lumber and wood I-joists, softwood lumber, softwood plywood, oriented strand board (OSB), and glued laminated timber (glulam). EPDs are standardized tools that provide information about the environmental footprint of the products they cover. The EPDs provide building teams with science-based information on environmental impacts and facilitate more inf...

Fabricated Plate
https://structurecraft.com/materials/connectors/fa... [Connectors] [Web Page]
Structure Craft
We use steel plate in a wide array of shapes and forms within connections and details across our projects. Fabricated connections can look rough and unfinished if appropriate attention is not paid to them. We take pride in our ability to detail refined connections even using this basic material. Fabricated connections often need detailed 3D modeling which our detailing department performs. We can also provide structural analysis and design of the connections if required. We have developed long ...

Shear Deflection of Composite Wood Beams
http://oaktrust.library.tamu.edu/bitstream/handle/... [Moisture/Durability] [Thesis/Dissertation] 1992
Tholvlas David Skaggs
...