Highlights: Hybrid mass timber research, new Wood, Naturally content, top 50 wood articles of 2017, a new wood champion, and AWC tall wood research.
- Merry Christmas from the SLB
- SLB Supports Innovative Hybrid Mass Timber Research
- Program Updates
- Industry Resources
- Industry News
- Insights from the Competition
- Event Calendar:
- WoodWorks Webinar: Structural Design of Mass Timber Framing Systems – January 10, 2018
- AWC Webinar: 2018 Wood Frame Construction Manual (STD350) – January 18, 2018
- reThink Wood Podcast: Timber on the Rise – Elevating Design Through Wood
- Click on Full Event Calendar to view many more upcoming events.
SLB Supports Innovative Hybrid Mass Timber Research
Mid- and high-rise residential buildings represent a significant portion of the building market and an important expansion opportunity for mass timber products. Since 2013, the Softwood Lumber Board (SLB) has teamed with Skidmore Owings & Merrill, LLP (SOM) to establish evidence that proves that mass timber is a viable structural element in tall buildings.
With funding from the SLB, SOM partnered with Oregon State University (OSU) to test cross laminated timber (CLT) floor systems, with a composite concrete topping slab connected to the CLT below it, to become an integral part of the structural performance of the panel. This significantly improved the structural performance, while maintaining the acoustic, and fire performance of the floor system. SOM and OSU conducted more than 20 tests on 14 full-scale specimens, examining the effectiveness of composite action, two-way bending stiffness, and continuous beam behavior, among other elements. Test results showed that composite timber floor systems are able to increase the spanning capabilities and two-way behavior of CLT floor systems, and that existing calculation techniques used to estimate composite stiffness are adequate.
Building off of tests conducted OSU earlier this year, SOM worked with the American Institute of Steel Construction (AISC) to investigate a proposed structural system that combined shallow steel framing and the composite CLT-concrete floor system. This combination intended to maximize steel framing’s spanning capabilities and the composite timber floor system’s lightweight properties. SOM and AISC studied the proposed system by comparing it to a benchmark building using a conventional concrete structure, which gave context to the structural details selected. The analysis showed that the proposed system could be marketable, in terms of bay sizes and floor openings, and ultimately be viable in residential high-rise construction. Read more here.
Taller Mass Timber Buildings Are on the Rise
View this interactive site here produced in conjunction with reThink Wood and AIA.
reThink Wood Lists Top 50 Wood Articles for 2017
reThink Wood leads the charge to develop and promote pro-wood messaging on behalf of the softwood lumber industry. In 2017, reThink Wood generated more earned media online and in print than ever before, including from top-tier industry publications like ArchDaily and The Architect’s Newspaper and in major national news outlets such as Money, CNN, Nature, Engadget, Wired, and The Atlantic.
To put this year’s groundswell of coverage in perspective, reThink Wood rounded up the top news articles of the year in one convenient list. The articles demonstrate wood’s influence and impact on the way buildings are designed and built. View the list here: https://www.rethinkwood.com/Wood-Top-50-2017.
AWC’s Research Helps ICC Committee Move Forward on Tall Wood
The International Code Council (ICC) Tall Wood Building Ad Hoc Committee held its final in-person meeting prior to the January 8, 2018, deadline for submitting code change proposals for ICC’s 2021 Group A standards. The committee has developed 19 proposed changes that would collectively allow for the construction of wood buildings up to 18 stories, or 270 feet, in height. The tallest allowances would apply to business and multifamily residential occupancies.
During their final meeting, committee members discussed and reached agreement on several key issues, including the fire performance of adhesives used to manufacture cross laminated timber, methods for determining fire resistance when applying non-combustible layers to mass timber, and preventing fire during construction. The outputs of research and fire tests supported by the American Wood Council (AWC) made a difference in helping committee members to act favorably on each proposal and ensure that their recommended changes are comprehensive, enforceable, and substantiated by empirical evidence.
Wood, Naturally Targets Content to Defend Markets
Throughout 2017, softwood lumber’s competitors in outdoor applications, including Trex, Azek, and Fiberon, worked to strengthen their marketing and position their products by attacking wood. Trex increased its marketing budget by 20% over the past two years, and registered a 10% increase in decking and railing sales year-on-year.
Wood, Naturally tracks its competitors’ trends to be able to swiftly defend softwood lumber’s U.S. residential market share, including by executing strategic digital and social media campaigns to reach, educate, and inspire homeowners to choose wood over competitors. Homeowners spend, on average, four to eight hours online researching their home improvement projects and material options. In 2017, Wood, Naturally reached homeowners with high performing social media content, including the Wisdom of Wood and There’s No Substitute For Real video series. Each series took a different approach to showcasing what only wood can claim – authenticity, craftsmanship, and natural beauty.
Wood, Naturally’s content across social media generated 7.8 million engagements, with an average engagement rate of nearly 25%, and led to over 32,000 referrals to partner association websites that provided further inspiration and information on specific species of wood.
WoodWorks Education and Support Helps Create Wood Champion
When South Carolina-based Britt, Peters & Associates Inc. engineering firm was tapped to design the 10,000-square-feet Calvary Chapel, a church with an adjacent classroom and meeting space, in Chattanooga, Tenn., they were already predisposed to building with softwood lumber. A member of the Britt, Peters & Associates team had participated in a WoodWorks-organized mill tour for students at Clemson University in 2014, which helped to deepen the company’s interest in mass timber and in particular the strength limits of long-span CLT panels and CLT made from southern yellow pine.
Because of the WoodWorks-organized mill tour, the team knew to call WoodWorks when it needed support to specify CLT for the Calvary Chapel project. WoodWorks staff and its help desk provided the Britt, Peters & Associates team with information on manufacturers and topics such as plane strength, connectors, design values, and how to place CLT panels on a concrete slab. The finished project featured two stories of CLT and consumed 259,200 board feet of softwood lumber.
2018 AWC Standards Approved
The American National Standards Institute (ANSI) recently approved the 2018 edition of AWC’s flagship standard, the National Design Specification® (NDS®) for Wood Construction, as an American National Standard (ANS). Both the ICC’s 2018 International Building Code (IBC) and International Residential Code (IRC) recognize and accept wood design values through the NDS reference found in the 2018 version. AWC’s 2018 Wood Frame Construction Manual (WFCM), which is also referenced in the 2018 IBC and IRC, was also approved as an ANS.
Both standards are available free for viewing at www.awc.org; print copies will be available in early 2018.
Virginia Tech’s Monthly Housing Report
- Part 1: October 2017 Main Housing Commentary
- Part 2: October 2017 Economic Conditions
- Past Housing Reports Archived
2017 Best of Design Awards for Office & Retail
December 7, 2017
Architect: LEVER Architecture
Location: Portland, Oregon
“Albina Yard is the first building in the United States made from domestically fabricated cross-laminated timber (CLT). This new 16,000-square-foot speculative office building utilizes mass timber construction, with a glue-laminated timber frame and CLT panels manufactured and prefabricated in Riddle, Oregon. The project’s primary goal was to utilize domestic CLT in a market-rate office building that would pave the way for broader adoption of renewable mass timber construction technologies in Oregon and the United States. The design approach reflects a commitment to this sustainable technology by developing an architecture focused on economy and simplicity, material expression, and the careful resolution and integration of all building systems to foreground the beauty of the exposed Douglas fir structural frame.” Read more here.
The Future of Framing
December 6, 2017
“Lumber and labor are perennial woes for most builders. Lumber price instability complicates revenue and profit forecasting, while the dearth of skilled workers has been blamed for everything from the inability to keep up with demand to rising warranty costs.
Responses to both issues should include rethinking how we frame houses. To start with, builders could dampen the effects of price fluctuations and protect their margins by better managing lumber use and by using more engineered components—neither of which actions asks them to alter how they build. Over the long-term, however, the better solution may be a transition to off-site building, a strategy that some progressive builders across the country are already employing.” Read more here.
Nation’s First Large-Scale Mass Timber Residence Hall Breaks Ground in Arkansas
November 30, 2017
“Cross-laminated timber may finally be having its heyday in the United States. The nation’s first large-scale mass timber residence hall recently broke ground at the University of Arkansas. The Stadium Drive Residence Halls project and living learning setting is the work of a design collaborative led by Leers Weinzapfel Associates, the Boston-based architecture practice behind the nation’s largest cross-laminated timber academic building at the University of Massachusetts.”Read more here.
Innovator of the Year: Katerra
December 4, 2017
“The emerging category of offsite construction is one way the industry is shaking that up… Katerra has grown to more than 1,000 employees across offices in four countries. It has a production facility in Phoenix, where it makes wall panels, floor systems, trusses and more. The company announced plans this fall to open a mass-timber production facility in Spokane Valley, WA. When it opens in 2018, the company will be able to produce CLT wall panels and floor systems and glulam structural beams while helping to scale production of CLT in the U.S.” Read more here.
Insights from the Competition
Highlights of news and stories released by competing materials
Build With Strength Uses Southern California’s Wildfires Devastation to Further Its Cause
Build With Strength
December 7, 2017
The Coalition of the National Ready Mixed Concrete Association’s Build With Strengthcampaign issued a statement to “call for safe communities and smart solutions”, citing the devastating southern California wildfires. Once again, it perpetuates the fear factor that this campaign builds upon, and reinforces the need for the wood industry to counter misinformation.
“This week’s events are a tragic reminder that fire can and will spread quickly, if the right conditions are present. Although our words provide little comfort to those that have lost their homes, belongings or more, we pledge to fight for stronger, more resilient communities in the months ahead – offering smart solutions to a problem that is becoming commonplace in southern California.” – Kevin Lawlor, spokesperson for Build with Strength.
Read full press release here.
SC Railing Renamed Trex Commercial Products
Trex Press Release
December 7, 2017
“SC Railing, the country’s leading manufacturer and supplier of custom architectural railings, has taken on a new – but renowned – name. Effective today, the company, recently acquired by Trex Company, has been renamed Trex Commercial Products. In addition to more closely aligning the subsidiary with its new corporate parent, the name change establishes Trex® as a major brand name in the commercial building arena…While historically focused on the residential outdoor living market, Trex has sought to increase its business and strengthen its position in the commercial building arena. The acquisition and renaming of SC Railing to Trex Commercial Products affords the company an instant entry into this market, while further diversifying the company’s portfolio.” Read full press release here.