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  • Architects are constructing wooden skyscrapers and transforming high rises into living gardens.

  • And these designs...could go a long way in improving how we live in the future.

  • Skyscrapers are symbols of modern ambition.

  • But the race to be the tallest is fueled by steel and concrete, two materials that account

  • for an estimated 8% of global C02 emissions.

  • Two countries in particular - Singapore and Canada - are attempting to transform the urban

  • skyline.

  • In Singapore, engineering firms like WOHA are coating their buildings with lush, native

  • plants.

  • To deal with high densities in cities, particularly Singapore where we are land-limited,

  • it is actually important to bring landscape greenery and nature very close to where people

  • alive and interact.”

  • Aside from the aesthetics of this building, these towers of green are also helping to

  • bring biodiversity back to our urban centers.

  • Because this building has vertical gardens integrated into its design, it actually contains

  • 1000 percent more plant life than could have existed on the original plot of land.

  • And having buildings that integrate nature in this way within our dense cities could

  • have a measurable impact on quality of life and the quality of the environment.

  • Some of us may have experienced New York in the summertime.

  • One of the reasons why we get a heat build up in cities like this is a process known

  • as Insolation.

  • When the sun hits a concrete skyscraper, heat is stored within the building and then re-radiated

  • back into the environment causing the air temperature to rise.

  • However, when WOHA designed the Oasia Hotel, they used plants to combat this problem.

  • In our projects, we have always tried to aim for more than 100% green replacement.

  • We need to find plants that can handle not just the wind, but maybe also need to be quite

  • hardy as well.

  • Tropical high-rise building skyscraper, when you elevate it, you actually get nice breezes

  • and nice wind.

  • And that actually makes it very comfortable.

  • There's no reason why, I think, when we have high density in the city that we should forget

  • about gardens, parks, and nature.

  • In Canada, architects and engineers are piloting new designs out of a familiar material: wood.

  • Wood is clearly an advantageous material, because it requires much less resources to

  • be extracted from the forest.

  • It requires less resources to transport on site.

  • It allows for faster construction.”

  • To construct a wooden skyscraper, engineers use mass timber, which is engineered to handle

  • loads similar to concrete and steel.

  • Wood has a very, very favorable strength to weight ratio.

  • Compared to how heavy it is, it is almost as strong as steel.”

  • They'll use a technique called cross-laminated timber, where different layers of wood are

  • glued together in a cross-based orientation.

  • Wood isn't a new material by any stretch.

  • It has ancient roots in medieval European churches and temples in Japan.

  • But it has had a major historical drawback.

  • Fire.

  • Urban cities were wiped out in the early 19th century, and steel and concrete eventually

  • became the dominant building materials.

  • But mass timber today doesn't ignite as easily.

  • All these structural wood elements, that need to be protected from fire, they're encapsulated

  • in drywall.

  • These elements cannot burn anymore, and they're just as safe as if it were a concrete structure.”

  • And wooden buildings have huge environmental benefits too.

  • In all of Canada, the U.S., Europe, the amount of wood growing is significantly larger than

  • the amount of wood that is actually harvested.

  • If we harvest our trees and put them in structures, we actually give an incentive to reforest

  • more areas, and regrow more trees.

  • This trend has spread to countries like the U.K., and Japan, kickstarting the next race

  • for the tallest timber tower.

  • By 2050, there will be nearly 10 billion people living on this planet, and two-thirds of us

  • will be in cities.

  • To handle the rise of human population and global temperature, native plant designs and

  • timber skyscrapers could go a long way in curbing environmental and economic impacts.

  • And they'll make us feel better too.

  • For more science documentaries, check out this one right.

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Architects are constructing wooden skyscrapers and transforming high rises into living gardens.


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B1 中級 美國腔

未来的kyscrapers将被设计来复制自然(Skyscrapers of the Future Will Be Engineered to Copy Nature)

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    joey joey 發佈於 2021 年 04 月 26 日