Estimation of in-plane bending strength of CLT with different number of layers
http://www.biomaterial.lipi.go.id/epub/index.php/p... [Mechanical Performance] [Conference Paper] 2017
Tsuyoshi Aoyama,Takuro Mori,Akihisa Kitamori,Hiroshi Isoda,Yasuhiro Araki,Takafumi Nakagawa
A simulation model based on Monte-Carlo method was developed to estimate in-plane bending strength of cross laminated timber (CLT). The model used mechanical characteristics of lamina obtainedfrom edgewise bending test of them. Simulation result was compared with the result of experiment on CLT beam without any defect. The test result indicated that the bending strength decreases increasing number of effective layer as reported in some previous researches. The model reproduced this tenden...

Seismic Strengthening of Existing Concrete and Masonry Buildings with Crosslam Timber Panels
https://link.springer.com/content/pdf/10.1007%2F97... [Seismic Performance] [Book/Book Section] 2014
I. Sustersic,B. Dujic
The paper deals with the possibility of using crosslam timber panels for strengthening existing buildings against seismic forces. Three types of buildings are considered – unreinforced masonry (URM), reinforced concrete frames and reinforced concrete frames with masonry infill. Results from an extensive testing series are presented, namely quasi-static cyclic test on URM and shaking table tests of reinforced concrete frames with and without infill....

Propose Alternative Design Criteria for Dowel Type Joint with CLT
https://link.springer.com/content/pdf/10.1007%2F97... [Mechanical Performance] [Book/Book Section] 2014
Shoichi Nakashima,Akihisa Kitamori,Takuro Mori,Kohei Komatsu
The load carrying capacity of dowel type joint in Cross Laminated Timber (CLT) was derived based on the Johansen’s yield model. The steel plate inserted drift pin joint with CLT (5 layered; thickness of laminae were same in one CLT, all of laminae were orthogonally arranged) was chosen as the specimen.; Stiffness and nonlinear load – deformation relationships were calculated by numerical analysis using Rigid Body Spring Model (RBSM). Estimation showed the good agreement with the tensile test res...

Seattle Mass Timber Tower: Feasibility Study
https://cdn.crtkl.com/wp-content/uploads/sites/1/2... [Tall Buildings] [Report] 2016
CallisonRTKL
Ever since humans began building their first dwellings, timber has been the construction material of choice. In the 21st century, mass timber technology offers an engineered wood product of choice that is recognized for superb structural strength and superior fire resistance over steel. MTC provides opportunities to explore a new design aesthetic and, most importantly, the technology comes at a time when the realities of climate change require the repositioning of forest, timber, manufacturing, ...

Thermal Conductivity Values for Laminated Strand Lumber and Spruce for Use in Hyrbid Cross-laminated Timber Panels
https://bioresources.cnr.ncsu.edu/wp-content/uploa... [Moisture/Durability] [Journal Article] 2017
Jaya Tripathi, Robert W. Rice
This study examined the thermal conductivity as a function of specific gravity and moisture content for laminated strand lumber (LSL) and red spruce. As part of a larger study of heat and mass transfer in cross-laminated timber panels using laminate comprised of both LSL and spruce, the authors measured the thermal conductivity at four moisture content levels. The results showed that the LSL had a higher thermal conductivity value across the entire moisture content range tested. The average diff...

Cross-laminated timber product passes first US fire tests
https://www.enr.com/articles/40169-cross-laminated... [Fire Performance] [Magazine/Newspaper Article] 2016
Nadine M. Post
Mass-timber-structure enthusiasts are calling results of recent flame-spread and fire-resistance tests on cross-laminated timber panels important yet not surprising. The CLT, made by the first certified supplier of the panels in the U.S., came through the tests with flying colors. “This is an important first step that demonstrates that domestic CLT performs as well or better than the competition. The results will help set the stage for the development of a U.S.-based supply chain for mass-timbe...

University Libraries Bring First Cross-Laminated Timber Panel to State
https://news.uark.edu/articles/40916/university-li... [General Information] [Magazine/Newspaper Article] 2018
University of Arkansas
...

Life cycle assessment and environmental building declaration for the Design Building at the University of Massachusetts
https://www.fpl.fs.fed.us/documnts/fplgtr/fpl_gtr2... [Environmental Performance] [Report] 2018
Hongmei Gu,Richard Bergman
With the world’s increasing focus on sustainability in the construction sector through green building systems, the U.S. Department of Agriculture (USDA) has been actively engaged in green building advocacy in the United States through USDA Tall Wood Building competitions and follow-up research on use of mass timber for nonresidential buildings. The USDA Forest Service, Forest Product Laboratory (FPL) funded the study of environmental performance of the pioneer mass timber building (the John W. O...

Cross-laminated timber (CLT) – a state of the art report
http://casopis-gradjevinar.hr/archive/article/2071... [General Information] [Journal Article] 2018
Mario Jeleč,Damir Varevac,Vlatka Rajčić
Cross laminated timber is an innovative plate-shaped product presenting a laminated structure and excellent physicomechanical properties. Favourable environmental, aesthetic and energy properties further enhance its qualities. The paper is a summary of CLT research conducted so far, with an emphasis on the need to harmonise existing regulations and include this product in the European standard for timber structures Eurocode 5. ...

Cross-laminated timber (CLT) – a state of the art report
http://casopis-gradjevinar.hr/assets/Uploads/JCE-7... [General Information] [Journal Article] 2017
Mario Jeleč, Damir Varevac, Vlatka Rajčić
Cross laminated timber is an innovative plate-shaped product presenting a laminated structure and excellent physicomechanical properties. Due to its high stiffness and in-plane and out-of-plane bearing capacity, it is most often used in form of wall or floor panels. Favourable environmental, aesthetic and energy properties further enhance its qualities. The paper is a summary of CLT research conducted so far, with an emphasis on the need to harmonise existing regulations and include this product...

CLT – Acoustic Performance
http://www.woodusematrix.com/database/rte/files/CL... [Vibration/Acoustic Performance] [Presentation] 2011
Sylvain Gagnon
...

CLT – European Experiences
http://www.woodusematrix.com/database/rte/files/CL... [Markets] [Presentation] 2011
Gerhard Schickhofer
...

CLT- Assessing the Market Opportunity in North America
http://www.woodusematrix.com/database/rte/files/CL... [Markets] [Presentation] 2011
FPInnovations
...

The effect of controllling the drying distortion of laminas on the production yield of cross-laminated timber (CLT) using Larix kaempferi wood
https://link.springer.com/content/pdf/10.1007%2Fs0... [Raw Materials] [Journal Article] 2016
Yeonjung Han, Jun-Ho Park, Yoon-Seong Chang, Yonggun Park, Jung-Kwon Oh, Jung-Pyo Hong, Jun-Jae Lee, Hwanmyeong Yeo
The objective of this study was to evaluate the effect of lamina distortion control on the production yield of cross-laminated timber (CLT) using domestic larch (Larix kaempferi) wood. The measured production yield of CLT was 27 %. The yields based on log volume of sawing, planing, cross-cutting, and finish planing of CLT were 49, 66, 96, and 86 %, respectively. The yield of sawing and planing can be improved by controlling distortion during drying. Using an experimental enforced-loading apparat...

Fire Resistance of Multistorey Timber Buildings
https://link.springer.com/content/pdf/10.1007%2F97... [Fire Performance] [Journal Article] 2015
Andrew H. Buchanan
Tall timber buildings are becoming popular around the world. This paper discusses options for setting the level of fire resistance in multistorey timber buildings. Fire resistance of timber structures involves a paradox, because it is well known that heavy timber construction has excellent fire resistance in severe fires, but it is also well known that burning of wood has contributed to severe damage and loss of life in some fires. This paradox often leads to contradictory statements on fire saf...

A review of structural, thermo-physical, acoustical, and environmental properties of wooden materials for building applications
http://www.sciencedirect.com/science/article/pii/S... [Moisture/Durability] [Journal Article] 2017
F. Asdrubali, B. Ferracuti, L. Lombardi, C. Guattari, L. Evangelisti, G. Grazieschi
The current environmental and energetic crisis and the resulting regulations led to a new interest in using sustainable materials for building applications. Wood can be a material with high sustainable rates because it is recyclable, reusable and naturally renewable. Moreover, its excellent strength-to-weight ratios, thermal insulating and acoustical properties make it useful for different kinds of applications in buildings, ranging from structural beams and frames, insulating envelopes, windows...

The Tall CLT Workshop
http://neesclt.mines.edu/CLT%20Workshop.html... [Seismic Performance] [Web Page] 2014
Colorado School of Mines
The Tall CLT building workshop was held at January 2014 in Seattle, WA and sponsored by the NSF NEES program through the NEES Planning grant in order to identify the societal needs and engineering challenges for Tall CLT construction in seismic active regions of the U.S., especially the Pacific Northwest. The purpose of this document is to provide a brief report on the event and share the contact information for all participants who provided their information on the sign-in sheets. A total of 62...

Tall CLT Building for Seismic Regions: Opportunities and Challenges
http://neesclt.mines.edu/content/file2.pdf... [Other] [Conference Paper] 2014
Shiling Pei, James D. Dolan, Jeffrey W. Berman, James M. Ricles, Richard Sause, John W. van de Lindt, Michael Willford, Hans-Erik Blomgren, Douglas R. Rammer, Marjan Popovski
...

An Overview of NEES-CLT Project and Tall CLT Workshop
http://neesclt.mines.edu/content/ppt1.pdf... [Other] [Presentation] 2014
Shling Pei
...

Tall Wood Buildings for the Pacific Northwest
http://neesclt.mines.edu/content/ppt2.pdf... [Other] [Presentation] 2014
Hans-Erik Blomgren, Michael Willford
...