17 July, 2019

Notre-Dame came far closer to collapsing than people knew. This is how it was saved.

https://www.nytimes.com/interactive/2019/07/16/world/europe/notre-dame.html
All the sensitive technology at the heart of system had been undone by a cascade of oversights and erroneous assumptions built into the overall design, said Glenn Corbett, an associate professor of fire science at John Jay College of Criminal Justice in New York.
“You have a system that is known for its ability to detect very small quantities of smoke,” Mr. Corbett said. “Yet the whole outcome of it is this clumsy human response. You can spend a lot to detect a fire, but it all goes down the drain when you don’t move on it.”