Museum Exhibit Challenges Notion That Wood Is An Antiquated Building Material

by | 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

D.R. Johnson Ready To Serve New Wood Building Market

by | Oct 7, 2016 | News

If the vast potential of timber construction isn’t obvious, a new exhibit at Washington D.C.’s National Building Museum aims to clear things up. Running through May 2017, the USDA-sponsored Timber City is drawing attention to the recent boom in a worldwide movement toward timber construction.

It’s opening up a new market that has been turning the mills at a growing number of wood products companies, including Montreal’s Nordic Structures, Sauter Timber in Rockwood, Tennessee, and D.R. Johnson.

Oregon-based D.R. Johnson Wood Innovations, a subsidiary of D.R. Johnson, specializes in the manufacture of cross-laminated timber (CLT) and glue-laminated beams from Douglas fir and Alaskan yellow cedar. They’re the first U.S. company to receive APA/ANSI certification to manufacture structural CLT panels – and they hope to help grow the U.S. market.

D.R. Johnson is one of only three North American companies certified by the Engineered Wood Association to construct CLT for use in buildings. The company employs 125 at a traditional sawmill and laminating plant, which was recently expanded by 13,000 square feet for increased CLT production. They’re currently fielding calls from hopeful builders, and manufacturing samples to be tested for fire safety and structural quality.

D.R. Johnson says the system for constructing CLT involves assembling prefabricated parts, speeding construction, and paring labor costs. The company partnered with wood processor manufacturer USNR to build a custom panel press for CLT.

From Woodworking Network: https://www.woodworkingnetwork.com/events-contests/event-coverage/timber-construction-exhibition-shines-light-industry