Level 3
ProjectVRD wrote:
I am on the sidelines with this sort of thing. Does anyone remember seeing a Horizon program about what would happen if all humans just disappeared?
They should some buildings would just fall apart after 20 years or so, while others would last for over one hundred years without any noticeable problems being exposed. It was the metal buildings that is left unattended would be in quick trouble, and the stone based buildings would last longer. But even the stone based buildings would last about a century because of the type of cement we use these days... it is basically crap stuff lol
They went on to show that buildings from 1800's would last longer haha, but then contrary to city buildings using modern cement, the longest lasting buildings (if you could call them that) would be the Hydro Dams, with the likes of the Hoover Dam lasting something like a thousand years because it's cement was specially cooled by pipes pumped with cold water in the interior which prevented cracking as the cement sets.
Going away from buildings altogether, the last sign of humans ever being on planet earth would be Mount Rushmore which would last over 300,000 years. Enough time for all metal buildings to completely disintergrate, all stone buildings to be weathered into dust including the pyramids (which I didn't include in the above classifications, they would last longer than anything we made in the last several hundred years) and Mount Rushmore would even last longer than all underground facilities, I remember them saying even NORAD would be completely gone due to continental movement and the interior eventually being filled.
I didn't see that show but I do remember reading about what would happen if we disappeared suddenly. I think they said glass buildings and metal buildings would be the first to go, these would be followed by concrete and brick buildings and then solid stone buildings such as churches could last centuries.
They also said there were other factors that could speed up or slow down the process. If we were to suddenly disappear and a fire were to start, it could rage on for days and it could destroy hundreds or even thousands of buildings. Animals and plant-life would take over the cities within 15 years. I think they said it would be very unlikely for Zoo animals to take over a city(Like some disaster movies would lead us to beleive). Bears, wolves, deer and cats would take over the cities while small dogs would disappear once animals like bears, wolves and big dogs took over(I think they said this would happen as they have seen it happen in the Chernobyl exclusion zone). Oddly enough, I think they said rats and cockroach numbers would initially rise sharply but would end up being only a fraction of what it once was as we would no longer be there to provide easy food and heat for them.
I think they said that almost everything could potentially be destroyed in about a thousand years if all the worlds nuclear power plants caused a nuclear winter. The only evidence that we had ever been here would be the moon landings.
I don't know if its true or not because it will never happen.
EDIT: I just found this on Youtube so I don't know if its really relevant http://www.youtube.com/watch?v=vkMXhKj0D4w&feature
Level 5
Pin-Pin-Ire wrote:
ProjectVRD wrote:
I am on the sidelines with this sort of thing. Does anyone remember seeing a Horizon program about what would happen if all humans just disappeared?
They should some buildings would just fall apart after 20 years or so, while others would last for over one hundred years without any noticeable problems being exposed. It was the metal buildings that is left unattended would be in quick trouble, and the stone based buildings would last longer. But even the stone based buildings would last about a century because of the type of cement we use these days... it is basically crap stuff lol
They went on to show that buildings from 1800's would last longer haha, but then contrary to city buildings using modern cement, the longest lasting buildings (if you could call them that) would be the Hydro Dams, with the likes of the Hoover Dam lasting something like a thousand years because it's cement was specially cooled by pipes pumped with cold water in the interior which prevented cracking as the cement sets.
Going away from buildings altogether, the last sign of humans ever being on planet earth would be Mount Rushmore which would last over 300,000 years. Enough time for all metal buildings to completely disintergrate, all stone buildings to be weathered into dust including the pyramids (which I didn't include in the above classifications, they would last longer than anything we made in the last several hundred years) and Mount Rushmore would even last longer than all underground facilities, I remember them saying even NORAD would be completely gone due to continental movement and the interior eventually being filled.I didn't see that show but I do remember reading about what would happen if we disappeared suddenly. I think they said glass buildings and metal buildings would be the first to go, these would be followed by concrete and brick buildings and then solid stone buildings such as churches could last centuries.
They also said there were other factors that could speed up or slow down the process. If we were to suddenly disappear and a fire were to start, it could rage on for days and it could destroy hundreds or even thousands of buildings. Animals and plant-life would take over the cities within 15 years. I think they said it would be very unlikely for Zoo animals to take over a city(Like some disaster movies would lead us to beleive). Bears, wolves, deer and cats would take over the cities while small dogs would disappear once animals like bears, wolves and big dogs took over(I think they said this would happen as they have seen it happen in the Chernobyl exclusion zone). Oddly enough, I think they said rats and cockroach numbers would initially rise sharply but would end up being only a fraction of what it once was as we would no longer be there to provide easy food and heat for them.
I think they said that almost everything could potentially be destroyed in about a thousand years if all the worlds nuclear power plants caused a nuclear winter. The only evidence that we had ever been here would be the moon landings.
I don't know if its true or not because it will never happen.
EDIT: I just found this on Youtube so I don't know if its really relevant http://www.youtube.com/watch?v=vkMXhKj0D4w&feature
=related
Im'ma gonna check that out when I get home, I hope it is a long video and well made 
Level 3
I have a feeling Wolves stadium will soon be abandoned after fans noticed the view from the new stand
http://oatcakefanzine.proboards.com/index.cgi?boar
Level 3
Not the UK but pictures of Detroit always seem interesting to me:
http://detroiturbex.com/content/index.html
and
http://zfein.com/photography/detroit/index.html
There has been human intervention, a lot of metals (particularly copper) have been strip from many of the buildings but it still seems fascinating regardless.
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