In the UK we have in fact discovered an alarming weakness in the concrete used to build schools, hospitals and other public building (in one case, the roof of a

In the UK we have in fact discovered an alarming weakness in the concrete used to build schools, hospitals and other public building (in one case, the roof of a primary school collapsed without warning). The response was basically "Everybody out now". https://en.wikipedia.org/wiki/2023_United_Kingdom_reinforced_autoclaved_aerated_concrete_crisis https://en.wikipedia.org/wiki/2023_United_Kingdom_reinforced... https://www.theconstructionindex.co.uk/news/view/raac-crisis-escalates-as-more-than-100-schools-told-to-get-out-now https://www.theconstructionindex.co.uk/news/view/raac-crisis... https://www.theguardian.com/education/2023/aug/31/what-is-raac-reinforced-autoclaved-aerated-concrete-schools-buildings-england-close https://www.theguardian.com/education/2023/aug/31/what-is-ra...