Models and design procedure for cross-laminated bamboo rocking walls
https://www.sciencedirect.com/science/article/abs/... [Raw Materials] [Journal Article] 2022
Qingfang Lv, Tongchen Han, Ye Liu
To conduct a comprehensive parametric and limit state study of Cross-Laminated Bamboo (CLB) rocking walls, this study established a finite element model (FEM) and a modified analytical model (MAM) for rocking walls based on tests. The initial prestress, cross-sectional area of the posttensioned rebars, aspect ratio of the CLB wall, and friction force of conventional friction dampers (CFDs) were studied. Parametric analysis showed that the lateral capacity of the rocking wall increased with the i...

Seismic behavior of innovative hybrid CLT-steel shear wall for mid-rise buildings
https://link.springer.com/content/pdf/10.1007%2Fs1... [Seismic Performance] [Journal Article] 2021
Enrique TC, Montaño J, Berwart S, María HS, Guindos P
This paper examines the seismic behavior of CLT-steel hybrid walls at 6-and 10-story heights to increase seismic force resistance compared to conventional wooden walls. The ultra-strong shear walls proposed in this paper are called Framing Panel Shear Walls (FPSW), which are based on a robust articulated steel frame braced with CLT board panels and steel tendons. Timber structures are well-known for their ecological benefits, as well as their excellent seismic performance, mainly due to the high...

Physical, mechanical and thermal properties of cross laminated timber made with coconut wood
https://rd.springer.com/content/pdf/10.1007%2Fs001... [Raw Materials] [Journal Article] 2021
Suthon Srivaro, Zoltán Pásztory, Hung Anh Le Duong, Hyungsuk Lim, Sataporn Jantawee, Jaipet Tomad
The fundamental material properties of coconut wood cross-laminated timber (CLT) were experimentally evaluated with a focus on the effect of the lamination density. Considering the significant density variations across the coconut trunks, the CLT specimens were manufactured using the coconut wood laminations of four density ranges: 655 ± 31 kg/m 3 , 741 ± 23 kg/ m 3 , 851 ± 49 kg/m 3 , and 972 ± 30 kg/m 3. The average bonding shear strength (5.2-9.1 MPa), compressive strength (33.1-56.7 MPa), an...

Análise do desempenho termoenergético de edificações residenciais em cross-laminated timber (CLT) no clima de Mato Grosso
https://www.researchgate.net/publication/346503699... [Environmental Performance] [Conference Paper] 2020
Gustavo Henrique Nunes, Guilherme Vilela Sanches, Thalita Giglio
Cross-laminated timber (CLT) panels consist of a massive timber construction technology, which has been standing out in several countries, and has a promising future in Brazil, due to the national forest potential. The aim of this study was to investigate the thermo-energetic performance of CLT panels, made of eucalyptus heartwood, for vertical closures of different dwelling types, considering the climatic conditions of three cities in Mato Grosso state: Cuiabá, Rondonópolis and Sinop. For this ...

How to Calculate the Wood Carbon Footprint of a Building - Think Wood
https://www.thinkwood.com/education/calculate-wood... [Environmental Performance] [Magazine/Newspaper Article] 2020
Edie Sonne Hall
From an environmental perspective, it is widely known that buildings matter. Buildings consume nearly half the energy produced in the United States, use three-quarters of the electricity and account for nearly half of all carbon dioxide (CO2) emissions. This course explains the principal methods and tools that are used to assess carbon footprint in the context of building materials. It includes a primer on product terminology, including life cycle assessment (LCA), environmental product declarat...

Dynamic Behaviour of Long-Span Timber Ribbed-Deck Floors
https://www.researchgate.net/publication/345893404... [Vibration/Acoustic Performance] [Thesis/Dissertation] 2019
Basaglia, Bella Maria
The development of engineered wood products and the environmental benefits of timber over conventional building materials has led to an increased interest in the use of timber for the construction of multi-storey buildings. Timber has a high strength-to-weight ratio making it structurally efficient for long-span floor applications (a common practice in commercial buildings). However, the low mass of such floors makes them more susceptible to walking-induced vibrations compared to heavier floors ...

Mayr-Melnhof Holz
https://www.mm-holz.com/en/company/locations/sawn-... [Commercial/Company Information] [Web Page] 2022
Mayr-Melnhof Holz
Mayr-Melnhof Holz is one of the leading timber-processing companies in Europe, a major producer of glued laminated timber, and a driving force in the advance of cross-laminated timber, the building material of the future. We live our motto "Where ideas can grow" and have been transforming the valuable raw material wood into timeless and modern wood products for more than 170 years. ...

Characterizing Star-sawn Pattern– Produced and Orthogonally Glued Specimens of Southern Pine
https://meridian.allenpress.com/fpj/article-pdf/69... [Bonding/Adhesives] [Journal Article] 2019
Guangmei Cao, Rubin Shmulsky, Ming Liu, Edward D Entsminger, Brian K Via, Hui Wan
In this study, triangular specimens of southern pine (Pinus spp.; SP) generated by a star-sawn process were characterized according to knots and deformation. SP specimens were used to understand the differences among glue-line combinations of radial-to-radial, radial-to-tangential, and tangential-to-tangential faces bonded with phenol resorcinol formaldehyde resin. The specimens were tested for shear strength, dimensional stability, wood failure, and delamination rate in accordance with ASTM D10...

Dimensional Changes of Cross-Laminated Specimens Produced under Different Conditions due to Humidity Variation
https://bioresources.cnr.ncsu.edu/wp-content/uploa... [Moisture/Durability] [Journal Article] 2019
Yeonjung Han, Yonggun Park, Sang-Yun Yang, Hyunwoo Chung, Yoon-Seong Chang, Hwanmyeong Yeo
Cross-laminated timber (CLT) is becoming increasingly adopted into wooden construction of South Korea. Due to the lack of standards and protocol for CLT, there are many problems in the production and utilization phases. This study focused on the deformation and defects of CLT due to humidity variations. In this study, small, cross-laminated specimens were manufactured using three layers of laminated larch planks that had various moisture contents. The dimensional changes of these specimens were ...

Dimensional Changes of Cross-Laminated Specimens Produced under Different Conditions due to Humidity Variation
https://www.semanticscholar.org/paper/Dimensional-... [Moisture/Durability] [Journal Article] 2019
Yeonjung Han, Yonggun Park, Sang-Yun Yang, Hyunwoo Chung, Yoon-Seong Chang, Hwanmyeong Yeo
Cross-laminated timber (CLT) is becoming increasingly adopted into wooden construction of South Korea. Due to the lack of standards and protocol for CLT, there are many problems in the production and utilization phases. This study focused on the deformation and defects of CLT due to humidity variations. In this study, small, cross-laminated specimens were manufactured using three layers of laminated larch planks that had various moisture contents. The dimensional changes of these specimens were ...

Shear Performance of PUR Adhesive in Cross Laminating of Red Pine
http://koreascience.or.kr/journal/view.jsp?kj=HMJG... [Bonding/Adhesives] [Journal Article] 2013
Hyung-Kun Kim, Jung-Kwon Oh, Gi-Young Jeong, Hwan-Myeong Yeo, and Jun-Jae Lee
Cross laminated timber (CLT) has been an rising issue as a promising building material replacing steel-concrete in mid story rise construction. But, there was no specific standard for CLT because it had been developed in industrial section. Recently, new draft for requirements of CLT was proposed by EN which suggested to evaluate the performance of adhesive in CLT by the same method as glulam. But, it has been reported that shear performance of cross laminated timber is governed by rolling shear...

Mosaic Center for Conscious Community & Commerce - Think Wood
https://www.thinkwood.com/projects/mosaic-center-c... [Case Study/Projects] [Web Page] 2022
Think Wood
The Mosaic Centre’s net-zero headquarters embodies the organization’s commitment and mission: doing good and doing well. Wood, selected for its inherent warmth, is the defining design feature throughout the facility including a mass timber framing system that forms the primary floor and roof....

Experimental and Numerical Analyses of New Massive Wooden Shear-Wall Systems
https://www.researchgate.net/publication/269966750... [Seismic Performance] [Journal Article] 2014
Pozza, Luca & Scotta, Roberto & Trutalli, Davide & Pinna, Mario & Polastri, Andrea & Bertoni, Paolo
Three innovative massive wooden shear-wall systems (Cross-Laminated-Glued Wall, Cross-Laminated-Stapled Wall, Layered Wall with dovetail inserts) were tested and their structural behaviour under seismic action was assessed with numerical simulations. The wall specimens differ mainly in the method used to assemble the layers of timber boards composing them. Quasi-static cyclic loading tests were carried out and then reproduced with a non-linear numerical model calibrated on the test results to es...

Experimental and Numerical Analyses of New Massive Wooden Shear-Wall Systems
https://www.researchgate.net/publication/269966750... [Connectors] [Journal Article] 2014
Luca Pozza, Roberto Scotta, Davide Trutalli, Mario Pinna, Andrea Polastri, Paolo Bertoni
Three innovative massive wooden shear-wall systems (Cross-Laminated-Glued Wall, Cross-Laminated-Stapled Wall, Layered Wall with dovetail inserts) were tested and their structural behaviour under seismic action was assessed with numerical simulations. The wall specimens differ mainly in the method used to assemble the layers of timber boards composing them. Quasi-static cyclic loading tests were carried out and then reproduced with a non-linear numerical model calibrated on the test results to es...

Wood as an Exposed Building Material for Indoor Climate Adaptation | SpringerLin
https://idp.springer.com/authorize?redirect_uri=ht... [Environmental Performance] [Book/Book Section] 2019
Nore K., Kraniotis D., Sortland ML.
Use of massive wood has increased during the last decade. The concept of massive wood, mainly as cross laminated timber elements (CLT), has become a popular building method for new constructions, both in public and private sector. Massive wood elements take advantage of wood as building material, also as an indoor climate buffer. Moholt 50|50 is a new student-housing project in Trondheim, Norway, which consists of five mass timber towers. Each of them with eight stories built in CLT on top of a ...

Cross-laminated timber (CLT) - Puuinfo
https://puuinfo.fi/puutieto/ingenieurholzprodukte/... [General Information] [Web Page] 2020
Puuinfo Oy
Cross-laminated timber (CLT) is a solid wood board, which is manufactured by glueing boards/battens crosswise in several layers. The dimensions and manufacturing technology of the board varies depending on the manufacturer. Typically, the thickness varies between 51 and 400 mm with the width being no more than 4.8 metres and the length 20 metres....

Developing Seismic Performance Factors for Cross Laminated Timber in the United States
https://www.fpl.fs.fed.us/documnts/pdf2015/fpl_201... [Seismic Performance] [Conference Paper] 2015
John Van De Lindt, M Omar Amini, Doug Rammer, Philip Line, Shiling Pei, Marjan Popovski,
This paper presents recent progress in the development of seismic performance factors for cross-laminated timber (CLT) systems in the United States. A brief overview of some of other systematic studies conducted in Europe, North America, and Japan is also provided. The FEMA P695 methodology is briefly described and selected results from connector testing and CLT wall testing are discussed. Shear and uplift tests were performed on generic angle brackets to quantify their behavior. CLT walls with ...

Fire dynamics in mass timber compartments
https://www.researchgate.net/publication/341185299... [Fire Performance] [Journal Article] 2020
Gorska, Carmen & Hidalgo, Juan & Torero, Jose
Since Engineered Wood Products (EWPs) have entered the building industry as structural elements, several fire safety concerns have arisen, especially for high-rise structures. The combustible nature of timber suggests that the current models and correlations for compartment fire dynamics might not apply to compartments with timber boundaries, due to the increased fuel load and its redistribution across the compartment. In order to fill this knowledge gap, 24 medium-scale timber compartments have...

Mayr-Melnhof Holz
https://www.mm-holz.com/en/references/residential-... [Commercial/Company Information] [Web Page] 2022
Mayr-Melnhof Holz
Mayr-Melnhof Holz is one of the leading timber-processing companies in Europe, a major producer of glued laminated timber, and a driving force in the advance of cross-laminated timber, the building material of the future. We live our motto "Where ideas can grow" and have been transforming the valuable raw material wood into timeless and modern wood products for more than 170 years. Learn more about us!...

Cyclic behaviour of typical metal connectors for cross-laminated (CLT) structure
http://link.springer.com/10.1617/s11527-014-0278-7... [Connectors] [Journal Article] 2015
Igor Gavric, Massimo Fragiacomo & Ario Ceccotti
An extended experimental programme on typical cross-laminated (CLT) connections was performed at IVALSA Trees and Timber Institute. The paper discusses the results of monotonic and cyclic tests in shear and tension (pull-out) carried out on hold-downs and steel angle brackets used to anchor the wall panels to foundations or to connect wall panels to floor panels. Mechanical properties such as strength, stiffness, energy dissipation, impairment of strength and ductility were evaluated and are cri...