Turning Up the Heat: Fires Test Performance of Tall Wood Buildings

Wood buildings provide an array of economic and environmental benefits. Interest in capitalizing on those benefits by constructing mid- to high-rise buildings using cross-laminated timber (CLT) is growing. CLT is made from layers of dried lumber boards stacked in alternating direction at 90-degree angles, glued and pressed to form solid panels. These panels have exceptional strength and stability and can be used as walls, roofs, and floors. Additionally, calculations have shown that a seven-inch floor made of CLT has a fire resistance of two hours.

In order for wood structures to rise above six stories without special building official permission, changes to the International Building Code are needed. It’s a tall order, but researchers from the Forest Service’s Forest Products Laboratory (FPL) recently completed a series of fire tests that will address concerns about fire performance of wood buildings and help take them to new heights. Continue reading

The Future of Wood Products: An Interview on Innovation

Pallet Enterprise, the leading pallet and sawmill magazine in America, recently talked with World Neih, national program leader for Forest Products and Wood Utilization for the U.S. Forest Service in Washington, D.C.

The recently published article follows a question-and-answer format, and Neih describes the latest developments in wood technology and product development, and how these innovations develop new markets for wood.

Many of the developments Neih refers to, from nanocellulose to cross-laminated timber, are advancing thanks to research here at the Forest Products Laboratory.  The future of wood products presents countless opportunities, and we’re proud to help lead the way.

Technology Helps Turn Salvaged Trees into Moneymakers

When insect scourges run rampant through forested ecosystems they can leave behind entire stands of dead and dying trees – especially if that scourge is the spruce budworm. In the Upper Midwest, where the spruce budworm infests forests on a cyclic 30-50 year pattern, forest managers oftentimes use salvaged logs from the dead and dying trees to produce low-value wood products, such as wood pulp, or merely count the dead trees as a loss and leave them standing.

Spruce budworm mortality,
Chequamegon–Nicolet
National Forest, Summer
2014 (Steven Katovich, USDA
Forest Service, Bugwood.org).

But Forest Products Laboratory (FPL) researchers developed ways to evaluate the quality of salvaged wood and sort out the higher-quality wood for production of cross-laminated timber (CLT) – a high-value wood product that can increase forest revenues. “We’re at the point of demonstrating commercially available technologies,” said FPL engineer Robert Ross, “and the idea that we can take high-grade material out [of dead tree stands].” Continue reading

Environmental Building Declarations: Analyzing a Structure from Cradle to Grave

(The following is a news item from the Athena Institute)

The Design Building at U.Mass Amherst continues an emerging trend in sustainable building transparency

Design Building on the Amherst campus of the University of Massachusetts. (Credit: Leers Weinzapfel Associates Architects Inc.)

The USDA Forest Service, Forest Products Laboratory, in cooperation with US WoodWorks, engaged the Athena Institute to prepare an environmental building declaration (EBD) for the Design Building on the Amherst campus of the University of Massachusetts. This is a new four-story 87,573 square-foot home for three departments: Architecture, Landscape Architecture and Regional Planning, and Building Construction Technology. The cross-laminated timber building, designed by Leers Weinzapfel Associates Architects with structural design engineer Equilibrium Consulting, was completed in January 2017. Continue reading

CLT and ‘America’s Forests’: Television Program Highlights Benefits of Sustainable Building

A new public television series focused on maintaining and sustaining healthy forests in America kicked off by exploring cross-laminated timber (CLT) and the future of green building.

In the premiere episode of America’s Forests with Chuck Leavell, music industry giant and tree conservationist Chuck Leavell steps into the world of sustainable construction, as he investigates the innovative possibilities of building with CLT. Continue reading