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Well, that’s certainly clever. Use the same approach as cranes that crawl up elevator shafts, but in reverse.
Only when Godzilla is peacefully hibernating in his oceanic trench, of course.
The way the red hydraulic posts change to white strikes me as odd as does the lowering of the floor all the way to the ground rather than to the next set of hydraulic rams.
Strikes me as something “off” but even if fake, it shows why explosive demolition may be cheaper? (Time, labor, risk of error?)
#2, they don’t change to white, a white fabric is placed around them.
#3 yes, because they don’t want the pillars to get cold?
There is something not right in this video. The people repeat in patterns (same at the beginning as the end of the video), and the tire tracks on the dry concrete in the lower left of the video repeat near the end as well.
Something just isn’t right.
I think its really the opposite- they’re constructing from the bottom up. The video’s just played backwards
How do they do it? First they replace the support pillars at ground level with computer-controlled metal columns. Then, a crew carefully demolishes the entire floor by hand, leaving the structure resting on the mechanical pillars, which then go down slowly until the next floor is at ground level. They replace the support pillars again with the mechanical ones, destroy that floor, and repeat the operation until they get rid of all the floors. This makes it look as if the building is shrinking in front of you, or being swallowed by the street.
According to the company, this method greatly reduces the environmental impact of the demolition, as well as the time. Kajima says that it speeds up the task by 20%, while making it easier to separate materials for recycling, as well as reducing the amount of products released into the air.
The process is called daruma-otoshi after a Japanese game that makes players take the bottom parts of a column—using a hammer—without disturbing the rest of the parts above. This method doesn’t disturb the columns above either, but it somehow disturbs my mind. [Kajima via Pink Tentacle]
#6
Yeah, and they also construct every floor by carefully assembling together piles of rubble.
This make sense in an area of the world that very densely populated. In the states when we demolish a building, usually the entire block or neighborhood is evacuated when they set off the charges.
But in an area like Japan, there’s just too many people in that area to evacuate everyone to demolish a building, plus it would hamper bussiness near the area to evacuate everyone. So this sounds very logical to do.
Wonder how long it normally takes to take down a building? Would love to see this time lapse video from a distance away, seeing a huge building “melt” as the skyline changes.
I’m surprised they don’t just let Godzilla do it.
Sorry, had to say it.