How are skyscrapers being demolished?
Floor by floor: Tokyo's skyscrapers are shrinking
A Japanese construction company is tearing down high-rise buildings using a lift system - clean, quiet and ecological. Slower than blasting, but still an eye-catcher.
The Akasaka Grand Prince Hotel in Tokyo doesn't look very special from the outside. Only once inside do you notice that no guest has stayed here for a long time. The former 140 meter high building was released for demolition in June 2012. The construction company Taisei has developed a technology that is said to be more ecological than conventional methods such as blasting or wrecking balls.
To do this, the building is literally being hollowed out. Even the cement floor is being removed and taken outside with cranes. The train movement even generates electricity. The idea is that as much as possible is recycled. The floors are then supported by retractable support pillars and lowered piece by piece. “It's like having a dismantling factory on the roof of a building with a huge hat on it. And then the whole thing shrinks, ”said developer Hideki Ichihara to the“ Japan Times ”.
The Akasaka Grand Prince Hotel has shrunk from 140 to 110 meters since the beginning. It is the largest building to be demolished in this way. According to the NewScientist, it should be completely dismantled in May of this year. With the shrink method, the noise level can be reduced by 20 decibels, CO2 emissions by 85 percent and dust generation by as much as 90. In addition, you are not dependent on the weather and it is much safer.
According to the “NewScientist”, Japan has 797 skyscrapers that are over 100 meters high. Around 150 of these will be between 30 and 40 years old in the next decade. During this time they are usually torn down. The Taisei construction company will therefore probably not be short of orders in the future.
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(Source: YouTube / luestylecom)
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