Torque loading tests on the rolling shear strength of cross-laminated timber
https://doi.org/10.1007/s10086-016-1567-2... [Mechanical Performance] [Magazine/Newspaper Article] 2016
Frank Lam , Yuan Li, Minghao Li
In this study , torque loading tests on small shear blocks were performed to evaluate the rolling shear strength of cross-laminated timber (CLT). The CLT plates in the tests were manufactured with Mountain Pine Beetle-afflicted lumber boards and glued with polyurethane adhesive; two types of layups (five-layer and three-layer) with a clamping pressure 0.4 MPa were studied. The small block specimens were sampled from full-size CLT plates and the cross layers were processed to have an annular cro...

Prediction of compressive strength of cross-laminated timber panel | SpringerLin
https://doi.org/10.1007/s10086-014-1435-x... [Mechanical Performance] [Journal Article] 2014
Jung-Kwon Oh, Jun-Jae Lee, Jung-Pyo Hong
Compressive strength of cross-laminated timber (CLT) is one of the important mechanical properties which should be considered especially in design of mid-rise CLT building because it works to resist a vertical bearing load from the upper storeys. The CLT panel can be manufactured in various combinations of the grade and dimension of lamina. This leads to the fact that an experimental approach to evaluate the strength of CLT would be expensive and time-demanding. In this paper, lamina property-b...

Cyclic Behavior of CLT Wall Systems: Experimental Tests and Analytical Predictio
https://doi.org/10.1061/(ASCE)ST.1943-541X.0001246... [Mechanical Performance] [Journal Article] 2015
Igor Gavric
An experimental program was performed at IVALSA Trees and Timber Institute on single and coupled cross-laminated (CLT) wall panels with different anchoring systems and different types of joints between adjacent panels. The mechanical properties of CLT walls were assessed and are critically discussed in the paper. The connector layout and the design of the screwed vertical joints were found to markedly affect the overall behavior of the structural system. The in-plane deformations of CLT panels w...

Mechanical Properties of Southern Pine Cross-Laminated Timber | Journal of Mater
http://dx.doi.org/10.1061/(ASCE)MT.1943-5533.00012... [Seismic Performance] [Journal Article] 2014
Daniel P. Hindman, John C. Bouldin
Cross-laminated timber (CLT) is a novel wood building material suitable for floor, roof, and wall assemblies in low- and mid-rise construction as an alternative to concrete and steel. CLTs are considered to provide good seismic resistance, fast erection times, carbon sequestration, and a significant reduction in greenhouse gas emissions over other construction materials. Southern pine is an abundant forest resource; yet it has not been commercially used for CLT manufacturing. The purpose of this...

Behavior and Strength Characteristics of Cross-Laminated Timber Mats: Experimental and Numerical Study
http://dx.doi.org/10.1061/9780784480427.022... [Mechanical Performance] [Conference Paper] 2017
Mustafa Mahamid, Tom Brindley, Nicholas Triandafilou, Slawomir Domagala
Cross-laminated timber (CLT) is an innovative wood product that has been introduced recently to engineering practice; CLT members have a wide variety of applications in engineering practice, these include primarily building and architectural applications as structural members that support gravity and lateral load. Although CLT practices have been gaining popularity in building applications, this research explores new applications and focuses on investigating the CLT members for Industrial appli...

Full-Scale Shaking-Table Tests of XLam Panel Systems and Numerical Verification:
https://doi.org/10.1061/(ASCE)ST.1943-541X.0000754... [Vibration/Acoustic Performance] [Journal Article] 2012
Viktor Hristovski, Bruno Dujic, Violeta Mircevska
The material presented in this paper refers to a part of the investigation on cross-laminated (XLam) wall panel systems subjected to seismic excitation, carried out within the bilateral project realized by the Institute of Earthquake Engineering and Engineering Seismology (IZIIS) and the Faculty of Civil and Geodetic Engineering at the University of Ljubljana (UL FCGE). The full program of the research consists of basic tests of small XLam wooden blocks and quasi-static tests of anchors, then qu...

Analytical study on seismic force modification factors for cross-laminated timber buildings
https://doi.org/10.1139/cjce-2013-0021... [Seismic Performance] [Journal Article] 2013
Shiling Pei, Marjan Popovski, John W. van de Lindt
With two producers in operation and over 20 buildings already constructed or in planning process, use of cross-laminated timber (CLT) is gaining popularity in Canada. Since CLT as a structural system is currently not included in the National Building Code of Canada (NBCC), one of the most important issues are the values for the force modification factors for seismic design of CLT structures when NBCC equivalent static force procedure is used. In this study, a test-calibrated numerical model for ...

Cross-Laminated Timber for Seismic Regions: Progress and Challenges for Research
https://doi.org/10.1061/(ASCE)ST.1943-541X.0001192... [Seismic Performance] [Journal Article] 2016
S. Pei, J. W. van de Lindt, M. Popovski, J. W. Berman,
Forum papers are thought-provoking opinion pieces or essays founded in fact, sometimes containing speculation, on a civil engineering topic of general interest and relevance to the readership of the journal. The views expressed in this Forum article do not necessarily reflect the views of ASCE or the Editorial Board of the journal....

Cyclic behaviour of typical metal connectors for cross-laminated (CLT) structures
https://doi.org/10.1007/s00107-014-0877-6... [Connectors] [Journal Article] 2015
Igor Gavric, Massimo Fragiacomo, Ario Ceccotti
This paper presents the results of an extensive experimental programme on typical cross-laminated timber (CLT) screwed connections conducted at CNR-IVALSA research institute. In-plane monotonic and cyclic shear and withdrawal tests were performed on screwed wall-to-wall, floor-to-floor and wall-to-floor CLT connections. The experimental results showed good performance of CLT screwed joints under cyclic loads when ductile behaviour was achieved. Brittle response occurred only in cases where requi...

Building with Wood
https://www.fs.fed.us/science-technology/energy-fo... [Fire Performance] [Web Page]
U.S. Forest Service
Wood is renewable and often outperforms other materials in terms of energy usage and air pollution. Woods structures can be safely built to comply with building codes. The use of wood indoors can lower blood pressure, lower heart-rate, lower psychological stress, lower susceptibility to illness, and lead to a better ability to focus attention...

Comparison of bending stiffness of cross-laminated solid timber derived by modal analysis of full panels and by bending tests of strip-shaped specimens
https://link.springer.com/content/pdf/10.1007%2Fs0... [Mechanical Performance] [Journal Article] 2011
René Steiger, Arne Gülzow, Christoph Czaderski, Martin T. Howald, Peter Niemz
The design of cross-laminated solid timber (CLT) as load-bearing plates is mainly governed by serviceability criterions like maximal deflection and susceptibility to vibration. Hence, predicting the respective behavior of such plates requires accurate information about their elastic properties. According to product standards, the bending stiffness of CLT has to be assessed from 4-point bending tests of strip-shaped specimens, cut from the CLT panels. By comparing elastic properties of CLT derive...

Makerjoint, a New Concept for Joining Members in Timber Engineering - Strength Test and Failure Analysis
http://www.proligno.ro/en/articles/2015/4/Rebstock... [Mechanical Performance] [Journal Article] 2015
Florian Rebstock, Peter Bomark, Dick Sandberg
The wood construction industries are becoming more focused on climate change and resource depletion, and individual and industrial consumption must reflect a greater degree of concern for the climate and environmental wellbeing. This paper presents a new concept for timber engineering, the purpose being to acquire information about the failure modes and the tensile and compressive strengths of two types of joint, the Simple Gooseneck and Thick Gooseneck, that can be used in a new concept for joi...

Numerical Analysis of Behaviour of Cross Laminated Timber (CLT) in Blast Loading
http://imateh.rtu.lv/wp-content/uploads/sites/28/2... [Fire Performance] [Report]
J. S;oseros, L. Gaile, L. Pakrastins
A non-linear computation model for CLT wall element that includes explicit dynamics and composite damage constitutive model was developed. The numerical model was compared with classical beam theory and it turned out that shear wood layer has significant shear deformations that must be taken into account when designing CLT. It turned out that impulse duration time has a major effect on the strength of CLT. Special attention must be payed when designing CLT wall, window and door architectural sys...

Part 2: Programme Project Information: Layered wooden composite with rational structure and increased specific bending strength
http://imateh.rtu.lv/wp-content/uploads/sites/28/2... [Vibration/Acoustic Performance] [Report] 2015
Karlis Rocens
...

Scientific report for Period 1: Innovative Materials and Smart Technologies for Environmental Safety
http://imateh.rtu.lv/wp-content/uploads/sites/28/2... [Environmental Performance] [Report] 2014
Andris Cate
National Research Programme (NRP) has a practical orientation; each of its tasks will contribute to the important sectors of the Latvian economy - Construction, Transport, Material Processing. In the same time, the main target of the research programme is to create new knowledge about use of innovative materials to ensure safe living environment, to facilitate technology transfer to the economy by contributing to the restructuration of the national economy according to the smart specialisation s...

Scientific report for Period 1: Innovative Materials and Smart Technologies for Environmental Safety
http://imateh.rtu.lv/wp-content/uploads/sites/28/2... [Environmental Performance] [Report] 2015
Andris Cate
National Research Programme (NRP) has a practical orientation; each of its tasks will contribute to the important sectors of the Latvian economy - Construction, Transport, Material Processing. In the same time, the main target of the research programme is to create new knowledge about use of innovative materials to ensure safe living environment, to facilitate technology transfer to the economy by contributing to the restructuration of the national economy according to the smart specialisation s...

Scientific report for Period 3: Innovative Materials and Smart Technologies for Environmental Safety
http://imateh.rtu.lv/wp-content/uploads/sites/28/2... [Environmental Performance] [Report] 2014
Andris Cate
National Research Programme (NRP) has a practical orientation; each of its tasks will contribute to the important sectors of the Latvian economy - Construction, Transport, Material Processing. In the same time, the main target of the research programme is to create new knowledge about use of innovative materials to ensure safe living environment, to facilitate technology transfer to the economy by contributing to the restructuration of the national economy according to the smart specialisation s...

Scientific Report for NRP Period 2014-2017
http://imateh.rtu.lv/wp-content/uploads/sites/28/2... [Environmental Performance] [Report] 2014
Andris Cate
National Research Programme (NRP) has a practical orientation; each of its tasks will contribute to the important sectors of the Latvian economy - Construction, Transport, Material Processing. In the same time, the main target of the research programme is to create new knowledge about use of innovative materials to ensure safe living environment, to facilitate technology transfer to the economy by contributing to the restructuration of the national economy according to the smart specialisation s...

Introduction to Mass Timber Buildings
http://mifbi.org/wp-content/uploads/2017/03/landre... [General Information] [Presentation] 2017
Archie Landreman
...

Michigan Forest Bioeconomy Conference Mass Timber and Tall Wood
http://mifbi.org/wp-content/uploads/2017/03/Mass-T... [Tall Buildings] [Presentation] 2016
James B. Smith
...