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this post was submitted on 20 Jul 2024
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One thing I haven't seen in the thread yet, is that there ARE elevators which are intended for use during fire-related evacuations. I've been in buildings where signs by the elevators make it known that during evacuations you are SUPPOSED to use them.
I don't know the specifics, but I would assume these have self-monitoring sensors to allow the elevator control system to determine whether it is affected by whatever is going on.
I suspect the way they work also changes, instead of prioritizing getting around different floors, the computer would start shuttling them up and down specifically to get people from each floor down to ground level. No-one already in the elevator gets to pick what floor they're going to.
Modern buildings are constructed in a way that significantly slows the spread of a fire, and I would assume that the machinery and shaft of evacuation elevators, doubly so.
And same as any elevator, they are built using a level of redundancy that means several cables can fail without issue, as well as emergency brakes that arrest the fall of the cabin should the worst occur.