00:00what happens when towers retire well they exit the stage with grace and a
00:20little help from some seriously powerful machines when old chimneys concrete giants
00:27or derelict high-rises outlive their purpose it's time for a controlled demolition no not chaos but
00:34choreography and in many cases the stars of the show are long arm excavators today's demolition
00:44is a mix of engineering physics and machine muscle especially in crowded urban settings
00:50where blowing things up isn't exactly ideal we bring in the high-reach excavators
00:55these excavators have arms that can stretch up to several feet they don't smash things randomly
01:02rather they disassemble the structure from the top down or nibble away at the base so how does this
01:08bring down a tower it starts with engineers studying the structure they figure out the center of gravity
01:16weak points and the safest direction for it to fall then the excavator moves in attacking the base of
01:23the structure bit by bit they shave off critical support until the towers weight shifts just enough
01:30it's like a game of giant Jenga and then it happens tons of concrete collapse not in chaos but in slow
01:41mesmerizing motion a structure that once defied gravity now bows to it all under control no flying debris no
01:53ground-shaking explosion just gravity doing its job with a little mechanical help from excavators
01:59sure explosive demolitions are still used for remote buildings but in cities where every inch counts the
02:09excavator approach is safer quieter and often cheaper so next time you see a tower collapse don't think
02:18think destruction think evolution a new beginning feeling like your world's falling apart
02:24maybe you're just being reconstructed
02:29tag someone who'd love to pilot one of these demolition beasts
02:35you
02:46you
02:48you
02:52you
02:54You
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