Wood Construction Pushes Forward On Both Sides Of The Border

by | Aug 22, 2018 | News

Wood Construction Pushes Forward On Both Sides Of The Border

 

Mass timber construction is making waves on both sides of the Canada-U.S. border, but factors in each country mean a different pace of progress.

The state of Washington is rapidly moving forward on both green construction and use of advanced wood products, but Washington State Department of Commerce forest products sector lead Brian Hatfield said the state isn’t necessarily ahead of its Canadian neighbor. “In some ways, British Columbia is ahead of us in terms of low carbon building materials,” he said.

In 2017, the Washington State Department of Enterprise Services oversaw a pilot project that built 20 kindergarten through Grade 3 classrooms using cross-laminated timber (CLT) in five school district sites in Washington. “We had a pilot district for five school districts, all single-story schools, and those have gone pretty well. They went up quickly and everyone was impressed,” Hatfield said.

The state’s 2016 supplemental capital budget included $5.5 million for the pilot project, which also measures the efficiencies of using engineered wood products through the construction process.

While Washington is taking steps to increase wood use in construction, the Province of British Columbia has pushed for mass timber and wood-focused design for the previous decade. In 2009, the Province of British Columbia put the Wood First Act into practice, which requires provincially funded projects to use wood as a primary construction material. The B.C. building code was also modified in 2009 to allow for wood buildings of up to six stories.

From Journal Of Commerce: canada.constructconnect.com.

 

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The Old Is New Again With Nail Laminated Timber

by | Nov 30, 2015 | News

We get so excited about Cross-Laminated Timber (CLT), the fancy plywood on steroids that we talk so much about on TreeHugger. But in fact, there is a much older technology for building with wood, that warehouses and factories were built out of 150 years ago with a fancy new name: Nail-Laminated Timber, or NLT. It used to be known as heavy timber or mill decking and is drop-dead simple: you just nail a pile of lumber together and voila.

Lucas Epp of Structurecraft stunned the audience in a presentation at the Wood Solutions Fair in Toronto, showing extraordinary projects built out of the stuff. Because while CLT is great stuff, it’s pretty new in North America, it’s expensive, and it’s not fully understood by the building inspectors. Whereas if you are doing a simple span, NLT does the job just fine, it’s a lot cheaper, can be made by anyone with a hammer and has been in the building codes forever.

It’s now being used in a 210,000 square foot, seven story office building in Minneapolis, where the developer, Hines, wanted “the warmth of wood and the embrace of green construction techniques and materials” to attract the tech and creative sector of the market. It also goes together much faster than a conventional steel or concrete building.

Heavy timber office and warehouse construction fell out of favor early in the 20th century after major fires in a number of cities caused the switch to concrete and steel noncombustible construction. The development of effective sprinklers has reduced that risk, and concerns about the carbon footprint of concrete have made renewable wood look a lot more attractive.

From TreeHugger.com: https://www.treehugger.com/green-architecture/old-new-again-nail-laminated-timber.html?utm_source=WIT112715&utm_medium=Email&utm_campaign=WeekInTrees