http://www.pinktentacle.com/2008/07/video-daruma-otoshi-skyscraper-demolition/
"Unlike conventional demolition that begins at the top of the building,
Kajima’s new method starts at the bottom. As each floor is demolished,
the support columns are cut and replaced with giant computer-controlled
jacks, which slowly lower the entire building one floor at a time. The
process is repeated for each successive floor until the entire building
is gone."
Share and enjoy,
*** Xanni ***
