by Web Editor | Jun 13, 2017 | News
Timber construction is opening a new market that has been keeping lumber and milling machinery busy at a growing number of wood products companies, including Montreal’s Nordic Structures, Sauter Timber in Rockwood, Tennessee, SmartLam, in Columbia Falls, Montana, and D.R. Johnson, in Portland, Oregon.
Oregon-based D.R. Johnson Wood Innovations, a subsidiary of D.R. Johnson, specializes in the manufacture of cross-laminated timber, or CLT, and glue-laminated beams from Douglas fir and Alaskan yellow cedar. D.R. Johnson Wood was the first U.S. company to receive APA/ANSI certification to manufacture structural CLT panels – and CEO Valerie Johnson plans to help grow the U.S. market.
D.R. Johnson has received the first U.S. certification to manufacture cross-laminated timbers (CLT) under a new standard approved last year by the American National Standards Institute. D.R. Johnson is one of only three North American companies certified by the Engineered Wood Association to construct CLT for use in buildings.
Johnson’s company employs 125 at a traditional sawmill and laminating plant, which was recently expanded by 13,000 square feet for increased CLT production. They’re currently fielding calls from hopeful builders, and manufacturing samples to be tested for fire safety and structural quality. One recent new wood construction project is a 14-story wooden apartment tower being built in Portland, Oregon.
From Woodworking Network: https://www.woodworkingnetwork.com/wood/pricing-supply/timber-construction-has-lumber-milling-machinery-rolling
by Web Editor | Jun 7, 2017 | News
Officials in Oregon have approved construction permits for the first all-wood high-rise building in the nation. Construction on the 12-story building, called Framework, will break ground this fall in Portland’s trendy and rapidly growing Pearl District and is expected to be completed by the following winter.
The decision by state and local authorities to allow construction comes after months of painstaking testing of the emerging technologies that will be used to build it, including a product called cross-laminated timber, or CLT.
To make CLT, lumber manufacturers align 2-by-4 boards in perpendicular layers and then glue them together like a giant sandwich before sliding the resulting panels into a massive press for drying. The resulting panels are stronger than traditional wood because of the cross-hatched layers; CLT can withstand horizontal and vertical pressures similar to those from a significant earthquake with minimal damage. They also are lighter and easier to work with than regular timber, resulting in lower cost and less waste.
For this project, scientists at Portland State University and Oregon State University subjected large panels of CLT to hundreds of thousands of pounds of pressure and experimented with different methods for joining them together. The project materials also underwent extensive fire safety testing and met fire codes.
State officials hope the building will stir greater interest in high-rise construction using mass timber and help revitalize the state’s lagging logging industry. Logging, once a major source of revenue in Oregon, has dropped sharply in the past few decades because of greater environmental protections for salmon and the spotted owl. The loss of the industry has devastated some of the state’s rural communities.
From The Register-Guard: https://registerguard.com/rg/news/local/35651365-75/portland-approves-permit-for-nations-first-all-wood-high-rise.html.csp
by Web Editor | May 24, 2017 | News
One building stands out in the old logging town of Prince George, Canada. Encased in a sleek glass facade, the structure towers above most of its neighbors, beckoning from afar with the warm amber glow of Douglas fir. Constructed almost entirely from timber in 2014, the 8-story, 30-meter building is among the tallest modern wooden structures in the world. But it is more than an architectural marvel. As the home of the Wood Innovation and Design Centre at the University of Northern British Columbia (UNBC), it is also an incubator for wooden buildings of the future — and a herald for a movement that could help to tackle global warming.
The building is less like a log cabin and more like a layered cake, constructed from wooden planks glued and pressed together, precision cut by factory lasers and then assembled on site. All told, the university avoided the release of more than 400 tons of carbon dioxide by eschewing energy-intensive concrete and steel, and the building locks up a further 1,100 tons of CO2 that was harvested from the atmosphere by British Columbian trees. In total, that’s enough to offset the emissions from 160 households for a year.
Wooden construction has ancient roots, but only in the past two decades have scientists, engineers and architects begun to recognize its potential to stave off global warming. By substituting concrete and steel with wood from sustainably managed forests, the building industry could curb up to 31% of global carbon emissions, according to research by Chad Oliver, a forest ecologist at Yale University in New Haven, Connecticut. In time, such a shift could help humanity to pull CO2 out of the atmosphere, potentially reversing the course of climate change.
“It’s the plywood miracle,” says Christopher Schwalm, an ecologist at Woods Hole Research Center in Falmouth, Massachusetts. “This is something that could have a significant impact on the riddle that is global environmental change.”
From Nature.com: https://www.nature.com/news/the-wooden-skyscrapers-that-could-help-to-cool-the-planet-1.21992
by Web Editor | May 15, 2017 | News
Mass Timber: The Next Great Disruption Of Construction, Wood Products Industries
The seeds of Andrew Waugh’s great disruption were planted in 2003. “Back then, people were saying we could ‘fix’ climate change by putting a solar panel on top of everything we built,” he remembered. “But we knew that wasn’t even close to enough.”
So Waugh’s East London architectural firm started studying mass timber, knowing it was the truly renewable building material – albeit largely unknown and untested in large-scale developments. “We were entranced by the opportunities this new material could provide,” he said.
It took five years for Waugh Thistleton Architects to hone their ideas – “so we could talk about the economic benefits of this kind of building” – and to bring that vision to reality in the world’s first mass timber tower, Murray Grove. The nine-story apartment complex in London’s Hackney borough was made from cross-laminated timber manufactured by KLH, an Austrian company.
Spruce strips were stacked crosswise three layers thick and glued together, producing horizontal beams and vertical structural wall boards that were harder than steel or concrete, with none of the associated carbon loss. The economic savings came at the construction site. Murray Grove was built in 27 days by four men, without a tower crane.
Using wood saved 1,150 tons of carbon dioxide from going into the atmosphere – the equivalent of running a wind turbine on top of the building for 210 years. And 29 families moved into new homes in a country with an overwhelming housing shortage.
From Treesource: treesource.org.
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by Web Editor | May 8, 2017 | News
The Sustainable Forestry Initiative Inc. (SFI) announced today that SmartLam, LLC, is the first U.S. manufacturer of cross laminated timber (CLT) to be certified to the SFI 2015-2019 Chain-of-Custody Standard. SmartLam is also the first manufacturer to produce CLT in the U.S.
SmartLam manufactures CLT for a variety of applications, including floor, roof and wall systems. SFI’s Chain-of-Custody Standard helps companies address the growing demand from governments, customers, and consumers for responsibly sourced forest products.
CLT is the next-generation of engineered wood products. Extensively tested and already widely used in Europe, CLT has vast applications for construction, industrial matting and bridging. Architects and builders choose wood because it looks great, has numerous environmental characteristics – including renewability – and it’s easy to work with. In addition, trees absorb carbon dioxide from the atmosphere as they grow, sequestering and storing the carbon while producing oxygen which reduces greenhouse gases and improves air quality.
“At SmartLam, we make CLT, but we like to tell our clients what we really sell is time. CLT increases construction speed and reduces a project’s cost and carbon footprint. Now, with certification to the SFI Chain-of-Custody Standard, we can also offer our clients supply chain assurance that our products are sourced from well-managed forests that are third-party certified to SFI’s rigorous standards,” said Casey Malmquist, President and General Manager at SmartLam.
SmartLam produces CLT at its Columbia Falls facility in Northwest Montana and is part of a global movement to use wood in tall buildings. Advances in technology are producing more engineered wood products and mass timber products that increase the capabilities of building with wood.
From PR Newswire: https://www.prnewswire.com/news-releases/smartlam-is-first-us-clt-manufacturer-to-earn-sfi-chain-of-custody-certification-300452619.html
