The South Tower collapsed 56 minutes after being hit, and the North Tower 102 minutes after being hit. Once the buildings began to fall, each took less than 30 seconds to fully collapse. The South Tower, though hit second, collapsed first.
Parts of the South Tower reached the ground about 9 seconds after its collapse began at 9:59 AM EDT, approximately 56 minutes after being hit. The central core of the lower 40 floors caved in within 25 seconds thereafter. Debris flattened or filled the seven basement levels within a few seconds.
The TV mast and roof from the North Tower struck the ground about 11 seconds after the descent began, at 10:28 AM EDT, 102 minutes after being hit. The central core of the lower 60 floors completely collapsed within 10 to 15 seconds after being bypassed by the falling upper floors.
Most of the interior collapse was hidden by dust and debris, which also spread over the surrounding buildings and streets.
Sadly, the Twin Towers of the Original World Trade Center in New York City collapsed before firefighters could fully contain the raging blaze, which had already consumed much of the upper and middle floors.
The elapsed time from the moment American Airlines Flight 11 struck the North tower until both towers had crashed to Ground Zero was 102 minutes.
The enormous weight of the floors above the impact-zone made the towers fall at near free-fall speeds, over 9,2seconds, from the time they started to fall and the time they hit the ground was about 10 seconds. Its a real shame :(
Days and it was still smoldering weeks later. The rescue people today suffer from various illness because of breathing in the smoke and dust from the rubble. I think several have died from it.
For north tower it took 1 hour and 42 minutes to collapse
For south tower it took 56 minutes to collapse
it took about 11 hours
56 minutes
There was a 29 minute gap between the collapse of the towers.
The first tenants moved into the North Tower in December 1970; the South Tower accepted tenants in January 1972.
1hr 13min 1st tower
Not very long The first tower collapsed 1 hour and 13 minutes later, the second one fell 1 hour and 25 minutes after it was hit.
Same time.
There was a 29 minute gap between the collapse of the towers.
No, the towers house the bridge lift equipment.
The first tenants moved into the North Tower in December 1970; the South Tower accepted tenants in January 1972.
The Tower Bridge is 800 feet long. The towers are 213 feet tall.
The pentagon was hit 51 mins. after the first tower, and 34 mins. after the second tower was hit.
1hr 13min 1st tower
3 to 4 hours
Yes, planes did hit the twin towers on 9/11. American Airlines Flight 11 hit the North tower, and United flight 175 collided with the South Tower.
Not very long The first tower collapsed 1 hour and 13 minutes later, the second one fell 1 hour and 25 minutes after it was hit.
9:59 am after being hit
Microwave towers are normally set up in "Line of sight" pattern, as long as the other tower can be clearly seen from the antenna height (both), they work very well. On average they're set roughly about 30 to 40 miles apart depend upon terrain. The old AT&T towers "long line" towers were for sure.
The south tower stood approximately 57 minutes between impact and collapse.