http://tinyurl.com/36mv5j
The Tampa incident was nothing even close. The Empire State Building was designed to withstand an impact from a ten ton aircraft.. The B-25 that hit the building in 1945 weighed that much and more......it was also carrying around 5,000 lbs of gasoline. When the aircraft hit the building, at the 913 foot level, one of the engines went right through the building and hit another building on the other side . The aircraft impact put an 18 by 20 foot hole in the building and caused extensive damage to the interior structure of the building on two floors, and the fuel caused a four alarm blaze that was eventually put out. As we can all see, the building is still standing 62 years later.