Daruma-otoshi Building Demolition

By Miss Cellania in Architecture, Video Clips on Jul 15, 2008 at 8:02 am

(YouTube link)
This is astonishing. Japanese company Kajima Corporation is using a building demolition method called daruma-otoshi in which they replace the support columns on the bottom floor with huge computer-controlled jacks. They dismantle the entire bottom floor, then lower the building floor-by-floor! Compared to blowing it up, this method saves time and space, pollutes the air less, and makes material recycling easier. And as much as we like to see old-fashioned implosions, you have to admit this is pretty cool to watch. Link -via the Presurfer

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Shelby
Jul 15th, 2008 at 10:02 am
Very very very cool!

But there are a lot of people very very very close to the descending building. Is the method THAT safe? Again cool.
Satoshi
Jul 15th, 2008 at 10:56 am
No real – reverse film, trick camera.

Thats how we build in JP – first top floor
and raise up to build floor below.
Jacki
Jul 15th, 2008 at 11:32 am
Lol not possible. Unless that clean up crew and debris was staged…or unless the building was made paper-mache style with debris o_O
SenorMysterioso
Jul 15th, 2008 at 11:38 am
They should just do like the game and construct a gigantic hammer to knock the floors out from under the building
sigh
Jul 15th, 2008 at 11:46 am
But what is the cost difference?
kid_icarus
Jul 15th, 2008 at 1:14 pm
i say blow it up! KABOOOOOOM!!!! sorry, sometimes i just like to see things explode. too bad the video was no longer available.
Peter
Jul 15th, 2008 at 1:27 pm
I dont really see How this method is much faster.. I would think the explosion itself is faster than clearing even 1 floor (unless its the picking through the debris remaining)

And its safe enough to stand by.. You can tell how slow the building descends
Ali S.
Jul 15th, 2008 at 2:08 pm
I would have loved seeing a camera filming it from a distance with the Tetris theme song playing.
Anthony
Jul 15th, 2008 at 2:53 pm
Japanese people are from Japan.
DOJ
Jul 15th, 2008 at 3:30 pm
lets adapt this technique to logging
Geekazoid
Jul 15th, 2008 at 6:05 pm
Nah, let’s see some controlled detonation! I want to see explosions, and a quick collapse and huge plume of smoke.
MrPumpernickel
Jul 15th, 2008 at 9:05 pm
Peter, I think if you take all things into account: the time it takes to get permission to use explosives in a tightly controlled environment such as that (i.e. buildings nearby), the time it takes to plan, safety precautions, clean up afterwards (the dust cloud would probably be immense) and so forth I’m not at all amazed that this method is faster.

The actual tearing down phase may take longer than a quick kaboom, but there’s so much more surrounding it, and I don’t think you can beat this for safety anyway
ted
Jul 15th, 2008 at 9:46 pm
Something not quite right about that video.
RM
Jul 16th, 2008 at 9:24 am
It isn´t funny without powder.
avraamov
Jul 17th, 2008 at 5:14 pm
fred dibnah would horrified.

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