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.
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.
1hr 13min 1st tower
The pentagon was hit 51 mins. after the first tower, and 34 mins. after the second tower was hit.
3 to 4 hours
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.
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
The south tower stood approximately 57 minutes between impact and collapse.