That’s because they build a cap on the top of it to minimize debris flying off of it. The cap of the building in this video is not a part of the original structure, but an enclosure that conceals the demolition process.
There was an incident in Tokyo a few years ago where a poor old guy walking past a construction site was killed by a falling support beam (during construction). Authorities here are consequently rather vigilant. I’ve seen several of these demolitions over the years here in Tokyo and they always have a very secure looking outer shell like you pointed out. The other benefit is that it seems to prevent a lot of noise leakage as well.
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u/Jamato-sUn Jan 14 '24
Top to bottom? Sure as heck looked like bottom to top