Comments by "Stephen Villano" (@spvillano) on "Plainly Difficult" channel.

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  20. The overpressure isn't a fixed magical figure, it depends upon context of what one is protecting against. A 3 PSI overpressure from a shockwave is enough to collapse many residential structures that aren't reinforced concrete, at 5 PSI, everything but reinforced concrete, 10 PSI most concrete buildings are destroyed or demolished and at 20 PSI, utter destruction - from the outside, upon the entire structure. Inside, it becomes a different matter, as one is essentially talking about one flat or in this case, one room in one flat. That said, failure of the flat itself shouldn't have allowed the entire structure to experience a progressive collapse of that segment. One flaw is a lack of design to protect against progressive collapse. No building codes existed to mitigate against it at the time, no effort was made to design protection in, frankly, it was a rubbish practice and protection needed to be codified. But, corner cutting of such a degree, with bloody newspapers used in place of concrete, that stinks to high heaven of corruption somewhere, as inspectors should've spotted that a mile off during construction! It's not as if only one man pours concrete to join segments! In this case, I'd have looked for a design with nonstructural panels designed to blow out without compromising the structural integrity of the entire building or segment of the building. I'd also want the fucking thing put together properly. And in this case, I'm forced to question the quality of all construction in the borough at the time, as obviously inspection was either absent or badly lacking, allowing heaven knows what to get built at grave risk to the populace.
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