Re: Not encountered a situation as extreme as this
"[0] for government values of 'temporary', i.e. as long as it doesn't collapse by itself."
One temporrary building I worked in was erected in 1939 and moved out of in 1986 - not because it was falling apart (it was) but because the concrete water tower it was tucked under started spalling chunks of cement - and then only when a 20kg lump went through the roof and partially demolished a rack before exiting through the floor