by Web Editor | Aug 6, 2018 | News
The state legislature earlier this year called on the Washington State Building Code Council (WSBCC) to adopt rules for cross-laminated timber (CLT) use when building residential and commercial buildings. The move represents ongoing efforts to bring CLT into mainstream use for residential and commercial construction, which would create commercial value for the small-diameter trees that are contributing to poor forestland health in Washington state.
For state and federal officials, as well as private stakeholders, that change could hasten restoration work by making tree thinning a profitable endeavor rather than a costly project requiring government funding.
The potential CLT offers was articulated by U.S. Forest Service (USFS) Chief Vicki Christiansen at the 2018 Pacific NorthWest Economic Region Summit in Spokane on July 24. “We can use new opportunities for forest product delivery to help us to improve forest conditions, while also creating jobs and sustaining rural communities. We can implement these new practices by working together and being a good neighbor.”
Forest Service Region 6 covers Washington and Oregon and includes 28 percent of all forestland across Washington. In recent years the federal agency has struggled to conduct forest health work due to “fire borrowing” in which those portions of its budget are used to pay for the high cost of firefighting. During last year’s wildfire season USFS spent $2 billion on wildfire fighting, more than half its budget. There were 50 large fires on USFS land and over 411,000 acres burned, costing the agency $130 million. Over 90 percent of those fires were human-caused. In April, federal legislation sought to end the practice of fire-borrowing by allocating additional long-term funding to USFS to the tune of $2 billion starting in 2020.
A 2014 analysis by The Nature Conservancy and USFS concluded that half a million acres of forestland managed by the federal agency in Eastern Washington were in need of thinning and prescribed burns. Along with the new funding, Christiansen said that they can also “align our best practice policies and guidance with the changing markets that are certainly emerging in the Pacific Northwest.”
Read more on this from The Lens at https://thelens.news/2018/07/31/cross-laminated-timber-as-forest-management-strategy/.
by Web Editor | Jun 22, 2018 | News
A far cry from the kitschy memorabilia of the Rock ’n’ Roll-themed building it replaces, the essentially all-new design of River North’s flagship McDonalds at 600 N. Clark Street is finally starting to come together.
At its heart is an innovative construction material known as Cross-Laminated Timber (CLT). In line with the fast food brand’s plan to reinvent its image, the sustainable building method is being employed for the first time in a commercial project in Chicago.
“One way to think about it is plywood on steroids,” Chicago-based designer Carol Ross Barney of Ross Barney Architects told Curbed Chicago. “It’s formed from smaller sized pieces of timber glued together for uniform strength.”
“CLT is versatile, and because the wood can be harvested and renewed at a more regular interval, it has a relatively low carbon footprint. You can use it like any panelized material such as precast concrete or steel. Here we’re using it as a deck structure.”
The choice to use timber came early in the process when McDonald’s first engaged Barney’s firm with the goal of design authenticity. “Some of the most durable materials aren’t very authentic,” explained the architect. “And some of the most authentic materials don’t hold up over time. CLT offers a great deal of both while reflecting the client’s commitment to sustainability.”
Read more on this from Curbed Chicago at https://chicago.curbed.com/2018/6/15/17386766/mcdonalds-ross-barneys-timber-construction.
by Web Editor | May 24, 2018 | News
Oregon’s U.S. Senators Jeff Merkley and Ron Wyden recently submitted a bipartisan letter urging the Committee on Agriculture, Nutrition and Forestry to include the Timber Innovation Act, which supports the development of mass timber products for building construction, in the next Farm Bill.
“We have been working to establish Oregon as a hub for mass timber products, using local timber and bolstering our forest products economy,” Merkley said. “This bill supports innovative manufacturing that creates jobs in the rural part of the state and encourages more sustainable tall wood building construction in urban parts of the state.”
“Oregon is leading the way in producing and engineering cross-laminated timber, which is revolutionizing the way our country constructs buildings,” Wyden said. “The Timber Innovation Act promotes job growth in Oregon’s timber counties and encourages the kind of Oregon entrepreneurship that can catapult our state’s economy to new heights.”
Merkley is co-leading the letter with Sen. Mike Crapo (R-ID); cosigners include Sens. Wyden, James Risch (R-ID), Amy Klobuchar (D-MN), Steven Daines (R-MT), Roger Wicker (R-MS), Gary Peters (D-MI), Angus King (I-ME) and Maria Cantwell (D-WA).
Oregon has been at the forefront of developing mass timber products, including includes cross-laminated timber (CLT), nail laminated timber, glue laminated timber, laminated strand lumber, and laminated veneer lumber. However, U.S. building codes do not currently recognize mass timber products as official construction materials, leaving the products without a standard rating system for quality, fire resistance, earthquake resistance, and more.
Read more on this from the Klamath Falls News at https://www.klamathfallsnews.org/news/merkley-wyden-urge-bipartisan-timber-innovation-act-to-be-included-in-farm-bill.
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 | May 4, 2018 | News
The International Code Council’s (ICC) Committee Action Hearings in Columbus, Ohio, have concluded with a clear endorsement of building codes that will enable the use of mass timber technologies in buildings ranging up to 18 stories. Though taller mass timber buildings are currently being built under various local codes, this move by the ICC ensures that model code provisions will be available to many more building officials.
Mass timber structures are generally built with large panels made of cross-laminated timber (CLT), nail-laminated timber (NLT), glue-laminated timber (Glulam) or structural composite lumber (SCL). The greater availability of CLT has provided new options for builders.
“The strength and fire resistance performance of mass timber structures is well understood and supported by substantial testing and data,” said Stephen DiGiovanni, P.E., Chair of the ICC’s Ad Hoc Committee on Tall Wood Buildings and fire protection engineer for the Clark County (NV) Department of Building and Fire Prevention. “As taller mass timber buildings become more widely deployed, it’s important that the International Building Code and the entire family of I-Codes remains at the forefront of emerging construction technologies, and continues to provide building and fire code officials with the tools they need to ensure the safety of the public and first responders.”
All buildings under the International Building Code (IBC) must meet specified fire performance standards, whether built of steel, concrete or mass timber. The 14 code provisions passed out of the ICC Committee Action Hearing established new fire resistance standards and procedures for mass timber that are more rigorous than comparable steel and concrete structures.
From Civil+Structural Engineer: https://csengineermag.com/code-officials-move-update-ibc-tall-mass-timber-buildings/
