“You make a better door than a window!” I’m sure your parents hollered that at you all throughout your childhood as you were unaware that you were obstructing their view of their favorite TV show. That phrase may surprisingly not make sense to future generations with the recent discovery of a process that can make wood transparent. Seems crazy, I know.
Wood isn’t the only thing scientists have figured out how to make transparent, recently, as we found out about transparent solar cells that could turn windows into energy sources. That discovery landed on our 2015 list of most promising construction technologies. Solar cells are relatively new to the world, but wood has been solid and opaque since the first tree sprouted. The secret to being able to see through wood, says Lars Berglund, a professor at KTH Royal Institute of Technology, is to chemically remove a component of wood’s cell wall, called lignin. Removing the lignin turns the wood white and a transparent polymer is then added to the material to allow you to see through it. The full report, created by Yuanyuan Li, Qiliang Fum Nin Yan, and the aforementioned Lars Berglund, was published under the title “Optically Transparent Wood from a Nanoporous Cellulosic Template: Combining Functional and Structural Performance.”
Transparent wood is an important discovery, because wood is a low cost and renewable resource, that is available throughout the world. As we slowly transition into more eco-friendly buildings, wood will prove to be a major player, as it also has excellent thermal properties. We’ve seen recent evidence of that with Canada’s newest tallest wood building, 12 stories high, set for construction. Adding transparency to the material allows it to be used in a variety of other applications, including windows, solar panels, and even semi-transparent facades. Even if it never catches on in those ways, it will, at the very least, lead to some interesting architectural uses.
On Thursday, April 18th, the New York City Council passed what they are calling “NYC’s Green New Deal,” which legislators hope will greatly reduce the city’s greenhouse gas emissions. In order to achieve those results, several mandates included in the legislation will have major effects on the construction and real estate industries.
Almost 7 years ago, construction began on the west side of Manhattan’s $20 billion mixed-use development. On March 15, 2019, Hudson Yards, as the development is known, has officially opened.
Mercedes-Benz Stadium, home to the NFL’s Atlanta Falcons, was completed in late 2017. The impressive structure had a hefty price tag of $1.4 billion, but it has already played host to several of the biggest events in sports, including the 2018 College Football National Championship and the recent 2019 NFL Superbowl. In addition to playing a large role in the sports world, it’s also playing a large role environmentally for the area surrounding the stadium.
A new 21-story apartment building proposed for Milwaukee, Wisconsin as received unanimous approval from the City Plan Commission. If built, the new tower could possibly be North America’s tallest mass timber building.
The USGBC recently released their 2018 ranking of the Top 10 US States for LEED construction, which is sorted by Gross Square Footage per Capita. That ranking system allows them to get a fair comparison of states, despite differences in population and number of buildings.
Tall buildings made with structural timber have been on the rise in Canada and European countries in recent years, but the United States has been slower to adopt the method due to code restrictions. The state of Oregon recently released an addendum to their building code to allow taller mass timber buildings in the state and an upcoming International Code Council (ICC) vote could encourage more states to follow suit.
You may have been sitting in your house or office one day and noticed the distinct sound of a bird hitting the window. It’s pretty common, as it’s estimated that as many as 988 million birds die in the US each year by colliding into glass. The new arena that will house the NBA’s Milwaukee Bucks has incorporated some design elements that will reduce the amount of birds killed by the massive structure, allowing it to be dubbed the “World’s Most Bird Friendly Sports Arena.”
Dubai has been on the bleeding edge of pushing the boundaries of construction for over a decade. The famous Burj Khalifa, the current World’s Tallest Building, but the United Arab Emirates on the map. Since then, the country has poured money and resources into the construction industry and have sets their sights on a new challenge: 3D construction printing.
Across the United States, any mass timber building designed to be taller than six stories high has to receive special approval from the building codes department. After a recent addendum was added to the Oregon’s building code, the state has become the first in the country to allow high rise mass timber buildings without receiving any special considerations.