Product Reports - APA – The Engineered Wood Association
https://www.apawood.org/product-reports?q=PR-L301... [Standards/Building code] [Web Page] 2019
APA – The Engineered Wood Association
APA Product Reports® help building officials and design professionals determine a product's conformance with codes and national, international or industry recognized standards. APA issues these reports to document the compliance of an engineered wood product that is manufactured under a quality program audited by APA. APA Product Reports signify the product's compliance with the relevant provisions in the model building codes....

Code Counts: New Wood-Concrete Hybrid Structural Floor System Tested for Mid- and High-Rise Tower Applications
https://www.thinkwood.com/code-count/mass-timber-c... [Standards/Building code] [Web Page] 2018
Think Wood
As a code official, you’ve probably inspected your fair share of flat plate reinforced concrete framing systems. A flat plate solution is a mainstay of the built environment, especially for office, hotel, and hospital structures. Low-story heights, flat ceiling, and a proven, code-compliant construction methodology make flat plate construction a popular choice for mid- and high-rise development....

Oregon design professionals views on structural building products in green buildings: Implications for wood
https://www.researchgate.net/publication/233504770... [Markets] [Journal Article] 2011
Chris Knowles, Christine Theodoropoulos, Corey Griffin, Jennifer Allen
Buildings have been shown to have impacts on the environment. Consequently, green building rating systems have become a tool to help reduce these impacts. The objectives of this study were to identify gaps in information and access to green building materials as viewed by Oregon design professionals. The scope was limited to the major structural materials: concrete, steel, and wood. This article focuses on the results unique to wood products. Information was collected through group interviews. E...

LEVER Architecture revamps The Nature Conservancy’s Oregon HQ - Archpaper.com
https://archpaper.com/2018/11/lever-architecture-o... [Markets] [Magazine/Newspaper Article] 2018
Sydney Franklin
LEVER Architecture is currently renovating the Oregon headquarters of The Nature Conservancy in East Portland. The Oregon Conservancy Center (OCC), as the building will be known, is on track to becoming one of the first structures in the country to utilize U.S.-manufactured cross-laminated timber (CLT) made from Forest Stewardship Council (FSC)–certified wood....

Finite element analysis of cross laminated timber (CLT) as a composite material
https://www.researchgate.net/publication/327201913... [Mechanical Performance] [Conference Paper] 2018
Juan Enrique Martinez, Mar Alonso-Martinez, Felipe Pedro Álvarez Rabanal, Juan Jose del Coz DíazJuan Jose del Coz Díaz
In the research for sustainable construction, cross-laminated timber (CLT) has gained popularity and become a widely used engineered timber product. However, there are few numerical studies of the structural behavior of CLT. Among other issues, the orthotropic properties of CLT complicate finite element analysis. This paper presents a finite element model (FEM) to predict the structural behaviour of CLT beams subjected to sustained flexural loading. This numerical analysis includes a material mo...

Blast Testing Research | WoodWorks
http://www.woodworks.org/publications-media/blast-... [Case Study/Projects] [Web Page] 2019
WoodWorks
WoodWorks, in cooperation with the USDA Forest Service Forest Products Lab and Softwood Lumber Board, conducted a series of successful blast tests on two-story, mass timber structures at Tyndall Air Force Base. Products tested include cross-laminated timber (CLT) and nail-laminated timber (NLT)....

Tall Timber Buildings: Application of Solid Timber Constructions in Multi-Storey Buildings
https://www.researchgate.net/publication/264876704... [Tall Buildings] [Journal Article] 2019
Andrew Waugh, Matthew Wells, Mathew Lindegar
In our paper, we will use our Stadthaus scheme to demonstrate that solid timber construction is a financially viable, environmentally sustainable and beautiful replacement for concrete and steel in high-density housing. Constructed entirely from cross-laminated timber from the first floor upwards, Stadthaus is the tallest timber residential structure in the world. The nine-storey building is the first of this height to construct load bearing walls, floors and cores entirely from timber. The towe...

Wood design in the National Building Code of Canada - The Canadian Wood Council
http://cwc.ca/how-to-build-with-wood/codes-standar... [Standards/Building code] [Web Page] 2019
Canadian Wood Council
The current edition of the National Building Code of Canada (NBC) is published in an objective-based format intended to allow more flexibility when evaluating non-traditional or alternative solutions. The objective-based format currently in use provides additional information that helps proponents and regulators determine what minimum performance level must be achieved to facilitate evaluation of new alternatives. Although the NBC helps users understand the intent of the requirements, it is unde...

Acoustics and Mass Timber: Room-to-Room Noise Control
http://www.woodworks.org/wp-content/uploads/wood_s... [Vibration/Acoustic Performance] [Report] 2018
Richard Mclain
The growing availability and code acceptance of mass timber-i.e., large solid wood panel products such as cross-laminated timber (CLT) and nail-laminated timber (NLT)-for floor, wall and roof construction has given designers a low-carbon alternative to steel, concrete, and masonry for many applications. However, the use of mass timber in multi-family and commercial buildings presents unique acoustic challenges. While laboratory measurements of the impact and airborne sound isolation of tradition...

Charring model for timber frame floor assemblies with void cavities
https://www.researchgate.net/publication/223296028... [Fire Performance] [Journal Article] 2008
Andrea Frangi, Carsten Erchinger, Mario Fontana
Design models of timber structures in fire usually take into account the loss in cross section due to charring of wood and the temperature-dependent reduction of strength and stiffness of the uncharred residual cross section. For timber frame wall and floor assemblies with void cavities, only a little information is available. In the first part of the paper, the results of an extensive FE-thermal analysis on initially protected timber beams exposed to fire on three sides, after the fire protecti...

Viability of Hybrid Poplar in ANSI Approved Cross-Laminated Timber Applications
https://www.researchgate.net/publication/260050336... [Raw Materials] [Journal Article] 2013
Anthonie Kramer, Andre R. Barbosa, Arijit Sinha
The development of cross-laminated timber (CLT) technology has opened up new perspectives for low-density hardwood species, which have traditionally not been rated as construction-grade materials for structural engineering applications. Several characteristics of the CLT, namely thermal performance, seismic behavior, and speed of construction, have raised interest among designers. The CLT technology has recently been used for residential and non-residential multi-story buildings and it has been ...

Acton Ostry Architects Archives - Archpaper.com - Archpaper.com
https://archpaper.com/tag/acton-ostry-architects... [Markets] [Magazine/Newspaper Article] 2018
The Architect Newspaper
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Tall Wood + Mass Timber Archives | Think Wood
https://www.thinkwood.com/ceu-types/tall-wood... [Tall Buildings] [Web Page] 2019
Think Wood
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New Videos of Blast Tests Available
https://www.fpl.fs.fed.us/labnotes/?tag=department... [Other] [Report] 2018
Rebecca Wallace
New video footage has been released of blast testing performed on cross laminated timber (CLT) structures, and it’s quite a sight to see. The Forest Products Laboratory, in cooperation with WoodWorks and the Softwood Lumber Board, led a second round of live blast testing in 2017 at Tyndall Air Force Base in Panama City, Florida....

The role of areal heat capacity and decrement factor in case of hyper insulated buildings: An experimental study
https://www.researchgate.net/publication/326715388... [General Information] [Journal Article] 2018
Francesca Stazi, Giulia Ulpiani, Marianna Pergolini, Costanzo Di Perna
Extensive simulation-based researches have highlighted the importance of placing a massive layer in the inner side of hyper insulated CLT buildings in the interest of optimize their thermal performance on an annual basis. The purpose of the present research is to experimentally evaluate the thermal responsiveness of multi layered and highly insulated CLT building envelopes characterized by different combination of two dynamic parameters, namely the internal areal heat capacity κ1 and the decreme...

The "sustainable condominium", a six storey timber building in Florence
https://www.researchgate.net/publication/285378429... [Raw Materials] [Journal Article] 2009
Maurizio Follesa, P. Lavisci, V. Esposito, L. Panerai, M. Barone, D. Celli, S. Cappelli
Following the sustainability policies of the Regional Council of Tuscany, Casa SPA a public Company located in Florence which is in Charge of designing, constructing and maintaining the social housing real estate of the whole Florentine area, started a project which will lead to the construction in a central area of Florence of three multi-storey buildings, one of which is a six storey building, which will be entirely constructed using timber load bearing structures with the cross-laminated pane...

Active damping for cross-laminated timber structures to improve seismic performance
https://www.researchgate.net/publication/281729699... [Seismic Performance] [Report] 2011
Shiling Pei, J. Daniel Dolan, Holiday Liu, John W. van de Lindt, J.M. Rieles
During seismic events, multi-story cross laminated timber (CLT) buildings may be able to achieve damage-free performance through adequate connection between CLT wall and floor diaphragm panels. However, amplification of seismic accelerations associated with these rigid connections may result in occupants' injury and contents damage, thus being unacceptable from a serviceability standpoint. This study looked into the feasibility of incorporating hysteretic damping and ductile response in only sel...

Block Shear Strength and Delamination of Cross-Laminated Timber Fabricated with Japanese Larch
https://www.researchgate.net/publication/312877304... [Raw Materials] [Journal Article] 2016
Yingchun Gong, Guofang Wu, Haiqing Ren
Process parameters of cross-laminated timber (CLT) fabricated with Japanese larch were evaluated. The process parameters were designed by using an orthogonal test including pressure, glue consumption, and adhesive. Both delamination and block shear tests were conducted on CLT in accordance with GB/T 26899 (2011). The results showed that the optimum process parameters were A2B3C2 including pressure (1.2 MPa), glue consumption (200 g/m2), and amount of adhesive (one-component polyurethane). The we...

Comparison with Measuring Method of Internal Story Drift on Shaking Table
https://www.researchgate.net/publication/265495476... [Seismic Performance] [Journal Article] 2009
Minoru Okabe, Ario Ceccotti, Motoi Yasumura, Chikahiro Minowa, Naohito Kawai, Carmen Sandhaas, Hidemaru Shimizu
Time-history response analysis could be obtained good information of seismic performance of timber structure building. Modelling that used of time history analysis usually based on the static test results of fasteners, walls and frames. Shaking table test is one of the effective methods to verify the reliability of model on dynamic behaviour. To verify the model's reliability, shaking table test should be carried out in consideration of the weight of test building, acceleration of each layer and...

Parametric Studies on the Effect of Compartment Characteristics in the Self-Extinction of Cross-Laminated Timber
https://www.civil.uq.edu.au/filething/get/12432/UQ... [Fire Performance] [Report] 2019
Juan P. Hidalgo
At present, the use of mass timber construction in buildings is experiencing significant growth. As a structural material, timber presents a series of advantageous features against common structural materials – sustainability, aesthetics, manufacturing and construction speeds are among these features. However, the combustible nature of timber is one of the main challenges due to the lack of a robust design framework. Self-extinction of timber is required during the decay phase of the fire such t...