Nation’s Largest Mass Timber Building Under Construction In Oregon

by | Oct 11, 2017 | News

As a crane lowered a glulam beam and construction workers on either end deftly guided it into connection with two upright wooden columns, a tour group member shook his head and said, “It’s like Lincoln Logs.”

Kind of. Which may in part explain some of the attraction of builders and designers to the potential use of strong, precisely engineered, carbon-storing wood beams, columns, wall panels and floor decking. As Chris Evans, a Swinerton Builders project manager put it, wood is the first building material people use to make the forts, homes and hideouts of childhood.

These days, builders and designers are joining mill owners, university researchers and policy makers in taking a fresh look at advanced wood products, “mass timbers” and what’s come to be called “tall wood” design. Advocates believe it can replace concrete and steel in mid- to even high-rise buildings, and provide an economic jolt to rural Oregon in terms of forest management and mill jobs.

In Hillsboro, Evans and Swinerton Builders are overseeing construction of the largest known U.S. building to date that uses cross-laminated timber, or CLT, for flooring, and glulam posts and beams. The Oregon headquarters of First Tech Credit Union will be five stories high and have 156,000 square feet of office space. Swinerton Builders is the general contractor.

Another tall wood building planned for Portland, called Framework, will be 12 stories high and will have five floors of affordable housing. That project was awarded a $1.5 million federal design competition grant to help with seismic and fire testing and certification.

From Capital Press: https://www.capitalpress.com/Oregon/20171005/nations-largest-mass-timber-building-under-construction-in-oregon

Oregon Researchers Tout Potential Of New Engineered Wood

by | Feb 22, 2016 | News

Oregon wood researchers hope to bring a new type of engineered lumber to market after tests to make sure it meets state building codes. Oregon State University has been notified that it will receive a $447,000 grant from the federal Economic Development Administration for the testing of cross-laminated timber, or CLT.

The testing will allow the development of manufactured wood products that meet state building codes so the products can be approved for the construction of large buildings, said Geoff Huntington, director of strategic initiatives for OSU’s College of Forestry.

“Our objective is to make CLT and other innovative uses of mass timber products technically feasible, economically viable and accessible alternatives for architects and developers seeking to use Oregon products to meet growing consumer demand for healthy, sustainable buildings,” he said. Plans for Oregon’s first cross-laminated timber buildings already are on the drawing boards.

CLT is composed of large wooden panels made with hundreds of pieces of wood, typically 2-by-4s or 2-by-6s laid perpendicular and glued together, Huntington said. The wooden panels are large, ranging from 10-feet-by-20-feet to 20-feet-by-40-feet. They can be used for walls, ceilings and floors, typically in buildings several stories tall, he said.

The product has been used in multistory buildings in Europe and Canada for several years, but the engineered wood hasn’t been approved for construction purposes in the United States, Huntington said.

From The Register-Guard: https://registerguard.com/rg/news/local/34077270-75/oregon-researchers-tout-potential-of-new-manufactured-wood-in-building-industry.html.csp