Evaluating Rolling Shear Strength Properties of Cross-Laminated Timber by Short-Span Bending Tests and Modified Planar Shear Tests
https://link.springer.com/content/pdf/10.1007%2Fs1... [Mechanical Performance] [Journal Article] 2017
Minghao Li
This paper presents an experimental study on rolling shear (RS) strength properties of non-edge-glued cross-laminated timber (CLT) made out of New Zealand Radiata pine (Pinus radiata) structural timber. CLT specimens with 35 and 20 mm thick laminations were studied to evaluate the influence of lamination thickness on the RS strength of CLT. Short-span three-point bending tests were used to introduce high RS stresses in cross layers of CLT specimens and facilitate the RS failure mechanism. Modifi...

Production and Technology of Cross Laminated Timber (CLT): A state-of-the-art Report
https://www.researchgate.net/publication/261884030... [General Information] [Conference Paper] 2013
Reinhard Brandner
Cross laminated timber (CLT) has been developed to a worldwide well-known and versatile useable building material. Currently increasing rates in production volume and distribution can be observed. In fact CLT, thanks to its laminar structure making it well suited for use in construction, provides new horizons in timber engineering, in areas which had until now been the realm of mineral building materials like concrete and masonry. After a short introduction, this paper aims to demonstrate curren...

Cross-laminated timber and Glue-laminated timber: The raw materials use in the final product
https://stud.epsilon.slu.se/3261/4/Pettersson_M_Be... [Raw Materials] [Thesis/Dissertation] 2011
Martin Pettersson, Mikaela Berglund
This is a study regarding in what extent quality is considered in the making of the products glue-laminated timber and cross-laminated timber. Glue-laminated timber consists of a set of wood pieces glued together with the fibers in the same direction while cross laminated timber consists of a set of wood pieces glued together with the fibers laying crossed forming a board. Wood is heterogeneous material with different qualities depending on where and how it has grown. By combining heterogenic wo...

Seismic Behavior of Multistory Cross-laminated Timber Buildings
http://www.swst.org/wp/meetings/AM10/ppts/Ceccotti... [Seismic Performance] [Conference Paper] 2010
Ario Ceccotti, Carmen Sandhaas, Motoi Yasumura
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Fire Performance and Design of CLT Construction
https://www.unb.ca/fredericton/forestry/wstc/_reso... [Fire Performance] [Presentation] 2011
Steve Craft
...

An Opportunity for Sustainable Growth
https://www.fpl.fs.fed.us/documnts/presentations/m... [Markets] [Presentation] 2015
Steve Lovett
This presentation will cover the Softwood Lumber Boards (SLB) purpose and programs emphasizing mass timber, SLBs interest in the conference, why it was important for SLB to partner with FPL as a sponsor, and what SLB hopes to gain from the conference. Finally, it will summarize how and why the conference and the follow-on activities will be important to all participants....

Myers Memorial United Methodist Church Bell Tower
http://www.woodworks.org/wp-content/uploads/CS-Mye... [Case Study/Projects] [Report] 2012
WoodWorks
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Endless Stair
https://www.americanhardwood.org/es/latest/blog/de... [Raw Materials] [Report] 2013
Ruth Slavid
Architectural imagination, engineering expertise, and a shared love for the curiosity about timber were the vital ingredients in the success of Endless Stair. Alex de Rijke of de Rijke Marsh Morgan has long been a fan of using timber in architecture, pioneering, for example, the use of cross-laminated timber in schools construction at Kingsdale School in London. In a piece entitled ‘Timber is the new concrete’, he predicted that timber will be the dominant construction material of the 21st Cent...

The hygrothermal inertia of massive timber constructions
http://kth.diva-portal.org/smash/get/diva2:11208/F... [Moisture/Durability] [Thesis/Dissertation] 2006
S. Hameury
The work presented in this Doctoral dissertation concerns the ability of heavy timber structures to passively reduce the fluctuations of the indoor temperature and of the indoor relative humidity, through the dynamic process of heat and moisture storage in wood. We make the hypothesis that the potential offered by the hygrothermal inertia of heavy timber structures is significant, and that it could provide a passive way of regulating the indoor climate. This ultimately could results in a decreas...

Fire Resistance of Partially Protected Cross-Laminated Timber Rooms
https://curve.carleton.ca/system/files/etd/2aa8ad6... [Fire Performance] [Thesis/Dissertation] 2014
Alejandro R. Medina Hevia
This thesis studies the fire behaviour of Cross Laminated Timber (CLT) panels in partially protected rooms. A one-dimensional heat transfer model was developed to determine the fire resistance of CLT floor and wall panels. During this study, three room fire tests were conducted at Carleton University Fire Research Laboratory to determine the maximum percentage of unprotected CLT surface area that will yield similar results to that of a fully protected room. The rooms had a single opening and wer...

The fire performance of engineered timber products and systems
https://dspace.lboro.ac.uk/dspace-jspui/handle/213... [Fire Performance] [Thesis/Dissertation] 2011
Danny J. Hopkin
Timber is an inherently sustainable material which is important for future construction in the UK. In recent years many developments have been made in relation to timber technology and construction products. As the industry continues to look to construct more efficient, cost effective and sustainable buildings a number of new engineered timber products have emerged which are principally manufactured off-site. In terms of light timber frame, products such as structural insulated panels (SIPs) and...

The fire performance of engineered timber products and systems
https://dspace.lboro.ac.uk/dspace-jspui/bitstream/... [Fire Performance] [Thesis/Dissertation] 2011
Danny J. Hopkin
Timber is an inherently sustainable material which is important for future construction in the UK. In recent years many developments have been made in relation to timber technology and construction products. As the industry continues to look to construct more efficient, cost effective and sustainable buildings a number of new engineered timber products have emerged which are principally manufactured off-site. In terms of light timber frame, products such as structural insulated panels (SIPs) and...

Duration-of-load and size effects on the rolling shear strength of cross laminated timber
https://open.library.ubc.ca/cIRcle/collections/ubc... [Mechanical Performance] [Thesis/Dissertation] 2015
Yuan Li
In the beginning of the twenty-first century, the largest mountain pine beetle (MPB) outbreak ever recorded struck western Canada. A huge volume of MPB-attacked lodgepole pine is expected to hit the BC forest industry in the next decade. Technologies to convert MPB-attacked lumber into engineering wood products are urgently required. Cross laminated timber (CLT) is a technology that can produce massive timber members as an engineered wood product for timber structures. In this study, the duratio...

Mechanical properties of laminated strand lumber and hybrid cross-laminated timber
http://www.sciencedirect.com/science/article/pii/S... [Alternative/Hybrid Configurations] [Journal Article] 2015
Zhiqiang Wang, Meng Gong, Ying-Hei Chui
Hybrid cross laminated timber (HCLT) was fabricated using lumber and/or laminated strand lumber (LSL), the mechanical performances of which were evaluated. To reach this goal, the mechanical properties of LSL and the bending properties of CLT and HCLT were measured in this study. The properties of LSL measured included the tension strength (only in the major direction), shear strength, shear modulus, and modulus of elasticity (MOE) and modulus of rupture (MOR). The failure mode of each kind of s...

Performance of U/P finite elements subjected to nearly incompressible linear axisymmetric orthotropic conditions
https://dspace.mit.edu/handle/1721.1/66826... [Mechanical Performance] [Thesis/Dissertation] 2011
R.D. Bateman
Finite element analysis is a vastly expanding field which provides engineers a viable instrumentation to model and measure idealized constitutive stress strain relationships for various complex physical bodies. In the field of Civil Engineering, this tool has proven very useful to analyze problems that do not have a direct closed solution guided by elementary structural mechanics. Within this field, there are many choices of finite elements, and should be chosen by the engineer to best suit the ...

Performance of U/P finite elements subjected to nearly incompressible linear axisymmetric orthotropic conditions
https://dspace.mit.edu/bitstream/handle/1721.1/668... [Mechanical Performance] [Thesis/Dissertation] 2011
R.D. Bateman
Finite element analysis is a vastly expanding field which provides engineers a viable instrumentation to model and measure idealized constitutive stress strain relationships for various complex physical bodies. In the field of Civil Engineering, this tool has proven very useful to analyze problems that do not have a direct closed solution guided by elementary structural mechanics. Within this field, there are many choices of finite elements, and should be chosen by the engineer to best suit the ...

Seismic behaviour of cross-laminated timber structures
http://www.iitk.ac.in/nicee/wcee/article/WCEE2012_... [Seismic Performance] [Conference Paper] 2012
Marjan Popovski, Erol Karacabeyli
FPInnovations has undertaken a multi-disciplinary project on determining the structural properties of a typical CLT construction. One of the important parts of the project is quantifying the seismic resistance of structures with CLT panels. In this paper, results from a series of quasi-static monotonic and cyclic tests on CLT wall panels are presented and discussed. CLT wall panels with various configurations and connection details were tested. Wall configurations include single panels without o...

Predicting effects of design variables on modal responses of CLT floors
http://www.sciencedirect.com/science/article/pii/S... [Vibration/Acoustic Performance] [Journal Article] 2017
Ebenezer Ussher, Kaveh Arjomandi, Jan Weckendorf, Ian Smith
New ultralight materials like cross-laminated-timber (CLT) enable attainment of longer floor spans than are possible with traditional shallow-profile timber construction. Their low modal mass to stiffness ratios make ensuring satisfactory dynamic responses under normal building occupancy conditions a primary design consideration. This paper presents numerical techniques for accurate prediction of modal frequencies, which are essential input to contemporary floor vibration serviceability design c...

Introduction to Cross Laminated Timber
https://pdfs.semanticscholar.org/cc91/7a7043622cd9... [General Information] [Journal Article] 2012
M. Mohnammad, Sylvain Gagnon, Bradford K. Douglas, Lisa Podesto
Cross-laminated timber (CLT), a new generation of engineered wood product developed initially in Europe, has been gaining popularity in residential and non-residential applications in several countries. Numerous impressive lowand mid-rise buildings built around the world using CLT showcase the many advantages that this product can offer to the construction sector. This article provides basic information on the various attributes of CLT as a product and as structural system in general, and exampl...

Observed Performance of Soft-Story Woodframe Building Retrofitted with CLT Rocking Walls
http://schd.ws/hosted_files/wcte2014/56/ABS630_Iqb... [Case Study/Projects] [Conference Paper] 2014
John W. van de Lindt, Pouria Bahmani, Gary Mochizuki, Mikhail Gershfeld, Asif Iqbal
Many of the woodframe buildings in United States, particularly along the pacific coast, have more than one story with the first floor used either for parking or commercial space which require large openings and few partition walls at that level. This open space condition results in the earthquake resistance of the first story being significantly lower than the upper stories thus creating first stories that are both “weak” (low strength) and “soft” (low stiffness) in nature. This feature has the ...