by Web Editor | Feb 13, 2017 | News
The new Brock Commons student residence at the University of British Columbia will be the tallest contemporary mass timber building in the world when finished this May. The term “mass timber” or “mass wood” covers an array of approaches, usually referring to a structural system combining engineered wood columns and floor slabs. In Canada, the most commonly referenced technical innovation, and one of the ones behind Brock Commons’ structure, is the cross-laminated timber (CLT) slab, available in a variety of thicknesses for different span requirements.
While Brock Commons’ height will unquestionably get the lion’s share of attention after its completion, that’s not the most interesting thing about the building for architects. Rather, it is the fact that, on typical floors, the wood is not visible.
Acton Ostry Architects principal Russell Acton, FRAIC, the lead designer of Brock Commons, has lectured widely on the project. When he talks to architectural audiences, he is inevitably asked: “why didn’t you expose the wood?” The answer is that the wood structure has been encapsulated in drywall and concrete topping to ensure efficient code compliance.
This pragmatic approach was a response to achieving quick approvals, and as an associated outcome, addressed perceptual challenges in terms of fire safety. In fact, the historic (and completely understandable) fear of fire in wood frame buildings is dramatically less relevant to mass timber. During a fire, the outside surface of a thick wood member chars while protecting a structural core of unburnt wood. As building codes develop, it is likely that the testing of mass wood assemblies will assist authorities to better understand the inherent fire resistance of mass timber, and potentially reduce the need for encapsulation, provided that a sacrificial layer of wood char is provided in its place.
From Canadian Architect: https://www.canadianarchitect.com/features/reaching-new-heights-2/
by Web Editor | Feb 10, 2017 | News
A new report from market research firm Allied Market Research (AMR) projects that the global engineered wood market is estimated to reach $41.273 billion by 2022, growing at a compound annual growth rate (CAGR) of 24.8 percent from 2016 – 2022. North America and Europe, being the developed markets, account for nearly 70 percent of global engineered wood production, while still maintaining high CAGRs.
Engineered wood demand is expected to remain high during the forecast period as it is an alternative to concrete and hardwood. Engineered wood products are widely used by architects, builders, code officials, and building designers aware of energy-efficient framing practices that conserve energy, speed-up construction, cut labor cost, and reduce waste.
“The rising popularity of engineered wood over hardwood is attributable to its cost-effectiveness and eco-friendly aspect,” says AMR research analyst Yogiata Sharma. “Also, stringent regulations with regards CO2 emission and rapid deforestation are factors likely to propel the adoption of engineered wood. Despite the reservations, surrounding its usage due to safety concerns, composite wood has proved to be a huge commercial success.”
The market is expected to move at a higher pace in Europe and North America, owing to high disposable income and widespread awareness of the benefits of engineered wood among the populace. The engineered wood industry in Europe will be driven by the rise in demand for engineered timber, substantial use of resources, and increased import of raw wood from Asia-Pacific and LAMEA.
From Woodworking Network: https://www.woodworkingnetwork.com/news/almanac-market-data/engineered-wood-market-reach-413-billion-globally-2022?ss=news,news,woodworking_industry_news,news,almanac_market_data,news,canadian_news
by Web Editor | Feb 3, 2017 | News
For centuries, wood was civilization’s primary construction material, but as the use of concrete, glass and steel grew, wood was largely relegated to flooring and interior paneling.
An exhibition at the National Building Museum in Washington challenges that narrow use. It suggests that tomorrow’s buildings will or should be constructed of wood. The exhibition, “Timber City,” highlights the wide range of benefits offered by cutting-edge methods of timber construction, showing that wood is a modern, strong and versatile material.
The show highlights the two winners of the Tall Wood Building Prize, sponsored by the U.S. Department of Agriculture. “One in New York City and one in Portland, Oregon, are two premier cross-laminated (engineered, pre-fabricated) timber buildings going up right now,” said the exhibition’s curator, Susan Piedmont-Palladino. “They’re similar structures. Both buildings are using this material … in slightly different ways, but the goal is to build right in the middle of the city.”
And that’s what makes timber the perfect choice in a busy district like New York’s Manhattan, where construction speed and efficiency are vital. “Buildings go up very quickly. The materials for the building — the walls and the floors and the ceilings — are manufactured off-site. They come on a truck, pre-fabricated,” Piedmont-Palladino said. “So a work crew armed with power screwdrivers can basically assemble the building extremely quickly. There’s no long-term curing of concrete” needed.
Information panels in the exhibition explain that concrete manufacturing is the world’s third-largest source of greenhouse gases, and that harvesting timber — a renewable resource — has a lower environmental cost than mining the materials needed to make steel and concrete.
From VOANews.com: https://www.voanews.com/a/museum-cross-laminated-wood-building-material/3697202.html
by Web Editor | Feb 1, 2017 | News
Market participants in the North American wood products market are once again cautiously optimistic as they look to 2017. This caution continues to pervade the wood products markets as uncertainty from the ongoing softwood lumber trade negotiations between the USA and Canada, the uneven U.S. housing recovery and the potential for further OSB restarts stifle optimism.
Market participants seem to be gearing up for what they believe will be yet another year of modest demand growth with ample supply availability. This will likely result in cautious inventory buying behavior early in the year. However, 2017 could easily surpass these cautious expectations, which could result in an insufficient inventory buffer as demand powers higher both cyclically and seasonally in late spring and throughout the summer.
Buyers adopted a conservative inventory strategy in 2016 in response to recent market performance and restrained expectations. Unmet price expectations in the North American OSB market in 2013 and more recently in the softwood lumber market in 2015 translated into debilitating inventory losses.
Fresh memories of inventory losses combined with guarded optimism about housing (traders fully in the show-me mode), the OSB industry still acclimating to the startup of over 4.5 BSF of OSB capacity, and the uncertainty surrounding the outcome of the softwood lumber trade negotiations between the USA and Canada drained enthusiasm for building inventories in 2016.
From Building-Products.com: https://www.building-products.com/January-2017/2017-Good-Signs-in-Wood-Products/
by Web Editor | Jan 30, 2017 | News
Weyerhaeuser has upgraded its Trus Joist Eastern Parallam PSL beams and columns with a new unique exterior coating. The patent-pending proprietary surface modification technology reduces the rate of moisture absorption during yarding and construction, and delays the effects of UV penetration.
“The new coating is uniformly sprayed on to both the narrow edge and wide face of Eastern Parallam PSL at our manufacturing facility and chemically modifies the outside wood surface of the beam or column,” said Barry Viviano, engineered lumber products regional manager in New England. “The protective surface covering resists thickness swell from exposure to both moisture and UV conditions during construction.”
Manufactured in Buckhannon, W.V., Eastern Parallam PSL is available east of the Mississippi River, and is intended for interior use applications, such as open concept floor plans and great rooms.
From Building-Products.com: https://www.building-products.com/January-2017/Weyerhaeuser-Upgrades-PSL/
by Web Editor | Jan 27, 2017 | News
President Trump issued an Executive Order over the weekend that freezes all recently published EPA regulations for a 60-day review period. This review period delays the initial effective date for the EPA formaldehyde rule, pushing it from February 10 to March 21, 2017, according to the Composite Panel Association.
This change in effective date will only impact the deadline for accrediting bodies and third-party certifiers to register with the EPA. The December 12, 2017 implementation date for all panel producers and fabricators to comply with the regulation’s emissions and other requirements remains unchanged.
Since the formaldehyde rule was published in the Federal Register, it cannot be changed without further action by the Congress through the Congressional Review Act, which is highly unlikely, or through rulemaking by the EPA. At this point, there is no clear indication that EPA will open the docket for further comment or initiate a rulemaking to make changes to the existing regulation.
CPA will continue its advocacy efforts with EPA during this implementation delay to seek changes to the final regulation that address a handful of editorial and/or substantive issues, such as the restriction on labeling TSCA Title VI compliance until December 12, 2017.
From Woodworking Network: https://www.woodworkingnetwork.com/news/woodworking-industry-news/trump-administration-issues-regulatory-freeze-epa-formaldehyde
