by Web Editor | Dec 5, 2018 | News
Thanks to innovative construction materials like cross-laminated timber (CLT) and laminated veneer lumber (LVL), wooden buildings are no longer mere houses made of sticks.
Attracted by the aesthetic and environmental benefits of timber, structural engineers have overseen a lumber comeback, from Landlease’s International House development in Sydney’s Barangaroo district to Brisbane’s newly completed 25 King, which is the world’s tallest commercial timber building.
But with ambitious projects in Tokyo, Chicago, and London eyeing far greater heights for timber as a building material, engineers and the public need to be assured wood can match up with concrete and steel when it comes to safety and stability.
That’s why Griffith University’s Associate Professor Benoit Gilbert has been putting timber to the test, using high-tech machinery to better understand how timber behaves in a variety of situations.
Gilbert’s current tests focus on progressive collapse, a term that describes the severe failure of a structure due to something going wrong in one part of it. That could be a gas explosion, a fire or if a car were to collide with the building.
Read more on this from Create at https://www.createdigital.org.au/strength-safety-tests-timber/.
by Web Editor | Oct 31, 2018 | News
Prescriptive requirements for wood structures up to 18 stories were among the additions preliminarily approved for the International Building Code following the work of the International Code Council’s ad-hoc Tall Wood Buildings Committee.
Wood is widely recognized as a carbon-neutral building material, but its use as a structural material has been mostly limited to residential and low-rise buildings due to its combustible nature. Through recent advances in manufacturing and engineering, wood in the form of mass timber products is increasingly attracting interest as a structural system for tall buildings.
Portland, Ore., recently saw the completion of the eight-story Carbon12, currently the tallest wood building in the United States. Still, progress has been slow in this country as compared to Europe or Canada, where the 18-story-tall Brock Commons, in Vancouver, stands as the tallest timber structure in the world. One significant issue inhibiting widespread adoption in the U.S. is prescriptive building codes, which currently limit the height of wood buildings to 85 feet, or six stories. In December 2015, the International Code Council (ICC) formed an ad-hoc committee to study the impact of tall wood buildings on the building code with the membership voting on the adoption of proposed changes on Oct. 24.
The ICC’s International Building Code (IBC) classifies a high-rise building as any building with an occupied floor 75 feet above the lowest level at which fire department vehicles can access. The 2018 IBC defines heavy timber structural members as Type IV construction, which also includes a range of wood products, such as solid sawn timber, glue-laminated members, and composite wood members. The term mass timber, however, comprises both heavy timber as well as engineered products, many of which the IBC does not reference, such as cross-laminated timber (CLT).
Heavy timber construction is currently limited to a height of 85 feet. Architects can design taller wood structures, but they must demonstrate that the design meets the prescribed code and performs as well or better than a similar concrete or steel structure. This can be a costly and time-consuming process, requiring extensive testing and documentation on the part of the design team and building owner.
Read more on this from Architect Magazine at https://www.architectmagazine.com/technology/support-for-tall-timber-reaches-new-heights-in-the-building-code_o.
by Web Editor | May 22, 2018 | News
USDA Forest Service Interim Chief Vicki Christiansen recently announced the award of almost $8 million to expand and accelerate wood products and wood energy markets. The Wood Innovation Grants will stimulate the removal of hazardous fuels from national forests and other forest lands to reduce the risk of catastrophic wildfires, promote forest health, and reduce the cost of forest management. The investment of federal funds will leverage over $13 million in matching funds from 33 business, university, nonprofit, and tribal partners in 20 states for a total investment of over $21 million.
“These Wood Innovation grants advance state-of-the-art solutions to reducing wildfire risk and making our forests healthier and more resilient,” said Forest Service Interim Chief Christiansen. “The public-private partnerships leveraged with these grants also foster increased economic development in rural communities.”
Previous grants supported successful blast testing of cross-laminated timber (CLT) that directly resulted in the Department of Defense using CLT on its on-base hotels; and the funding of a feasibility analysis for a new CLT manufacturing facility to increase the amount of U.S.-made CLT.
This year the Forest Service received 119 proposals, demonstrating the expanding interest in using wood in both traditional and unconventional ways, such as an innovative building material and as a renewable energy source. Since 2005 more than 260 grants have been awarded to improve forest health, create jobs, invest in renewable energy, and support healthy communities.
Of the 34 projects funded in 2018, 28 focus upon expanding markets for wood products, and six seek to increase markets for wood energy. Some examples include utilizing small-diameter woody material in cross laminated timber (CLT) panels, addressing affordable housing in the northeast building market with mass timber, converting woody debris to renewable natural gas for transportation fuel, and using juniper biomass and biochar to filter heavy metals and manage storm water.
Read more on this from the USDA Forest Service at https://www.fs.fed.us/news/releases/usda-forest-service-awards-wood-innovation-grants-expand-and-accelerate-wood-products.
by Web Editor | Apr 20, 2018 | News
First Full CLT Building In California Opens
The ribbon cutting ceremony by the Plumas County Health and Humans Services Department for its new Biomass Boiler Building in Quincy, CA on April 6, marked the opening of the first building in California made entirely of cross-laminated timber (CLT). CLT is establishing itself as a sustainable building material with a reduced carbon footprint and an inviting, natural aesthetic. Whereas limited uses of CLT were previously implemented across the state of California in buildings as a roof or floor system, the Biomass Boiler Building was constructed using CLT panels for the complete structural system to resist gravity and lateral forces, such as wind or a seismic event.
Owned by Plumas County, the industrial Biomass Boiler Building located adjacent to the Health and Human Services Department in Quincy, CA, includes approximately 2,000 SF of space. It houses an innovative biomass system using organic and sustainable waste material to generate heat for the Health and Human Services Building as an alternative to fossil fuels. The boiler is only the second of its kind in the U.S.; it is a community-scale, biomass boiler unit that runs on hog fuel, a coarse woody material generated as a byproduct directly from forest restoration and management activities.
Camille Swezy, Wood Utilization Program Lead of Sierra Institute, remarked, “The community of Quincy and Plumas County officials are very pleased with the new Biomass Boiler Building constructed entirely of CLT, now housing an innovative biomass heating system. Timber and wood products development is deeply engrained in Quincy’s roots, and the community is now thrilled to have a demonstration of wood utilization in a practical small-scale application.”
Originally, the Biomass Boiler Building structure was planned to be constructed with a prefabricated metal building system. Plumas County officials and the Sierra Institute decided to take the project in another direction to demonstrate the strengths and benefits of building with timber while also incorporating Plumas County’s most abundant natural timber resources. Plumas County officials worked with the design team to integrate mass timber into the building’s design.
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by Web Editor | Jan 8, 2018 | News
Roseburg Forest Products has announced that Phil Odom has been named business manager for the company’s plywood and lumber business, a newly created role that consolidates the reporting structure of plywood and lumber sales organization. Reporting to Odom are the central planning manager, the plywood field sales team, and sales managers for lumber, softwood plywood, and hardwood plywood.
Odom has had experience at BlueLinx Corporation where he served as vice president of national business development, and at Georgia-Pacific. At both companies, Odom managed sales, distribution, manufacturing, and operations teams. Bringing a breadth of experience in organizational leadership and team development to the role, Odom has developed national sales strategies and built out new channels, markets, and product lines.
Odom holds a bachelor’s degree in business administration and marketing from Georgia Southern University. He has served as a board member of the Construction Suppliers Association and as an active member of both the North American Wholesale Lumber Association and the National Lumber and Building Material Dealers Association.
Founded in 1936, Roseburg Forest Products is a privately owned company and a producer of particleboard, medium density fiberboard, and thermally fused laminates. Roseburg also manufactures softwood and hardwood plywood, lumber, LVL, and I-joists. The company owns and sustainably manages more than 600,000 acres of timberland in Oregon, North Carolina, and Virginia, as well as an export wood chip terminal facility in Coos Bay, Oregon.
From Woodworking Network: https://www.woodworkingnetwork.com/roseburg-names-business-manager-plywood-and-lumber?ss=news,news,woodworking_industry_news,news,almanac_market_data,news,canadian_news
