Felling Opposition to Wooden Skyscrapers

For a number of reasons, the use of wood for the construction of large buildings fell out of favor more than a century ago. So why is one Vancouver-based architect arguing for constructing high-rises using one of nature's oldest building materials?

2 minute read

March 19, 2013, 12:00 PM PDT

By Jonathan Nettler @nettsj


Anthony Flint looks at the reasons why Vancouver-based architect Michael Green proposes "using wood to erect urban skyscrapers and multifamily structures of up to 30 stories," which was the subject of a recent TED Talk.

"For one thing, Green argues, using wood in a more systematic way would be good for sustainability," notes Flint. "Buildings account for nearly 50 percent of all global greenhouse gas emissions. In the construction process, 3 percent of the world’s energy is used for making steel, and 5 percent for concrete."

"Wood grows by the power of the sun, and harvesting wood through sustainable forestry practices – enough wood for a 20-story building is grown every 13 minutes, he says – would also be a form of sequestration of carbon, which is otherwise released when a tree falls and decomposes."

So why hasn't high-rise wood construction taken off? "The vast majority of city building codes, largely based on the tragedies of a century ago, limit the height of wood buildings, often to a mere four stories," explains Flint. However, the type of wood that would be used in high-rise construction - super-compressed mass timber panels - is "actually difficult to burn."

"Sweden has already approved a 30-story wood tower, and Vancouver is reviewing Green’s proposal for a structure nearly as high," adds Flint. "His white paper, 'The Case for Tall Wood Buildings,' is available at the Wood Coalition website."

Monday, March 18, 2013 in The Atlantic Cities

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