Originally posted by Straybow
[Q] Originally posted by Ted Striker
No, once again the building was designed to withstand the estimated forces of initial impact and the assumed structural damage. To model the behavior of the structure under those forces was quite beyond the best computers of the day.
[Q] Originally posted by Ted Striker
No, once again the building was designed to withstand the estimated forces of initial impact and the assumed structural damage. To model the behavior of the structure under those forces was quite beyond the best computers of the day.
According to the Federal Emergency Management Agency, WTC towers 1 and 2 were designed to withstand the impact of a 707 lost in fog while looking to land. The modeled aircraft was a 707 weighing 263,000 lb (119,000 kg) with a flight speed of 180 mph (290 km/h), as would be used in approach and landing situations.[25] The 767s that actually hit the towers had a kinetic energy more than seven times greater than the specifically modeled 707 impact. (The Boeing 747, with an empty weight more than twice that of the 767, was in the final design phase when WTC drafting began and the first 747s were constructed simultaneously with the WTC towers; however the known attributes of the 747 were apparently not modeled in designing the towers).
The building was designed to have a fully loaded 707 crash into it. That was the largest plane at the time. I believe that the building probably could sustain multiple impacts of jetliners because this structure is like the mosquito netting on your screen door -- this intense grid -- and the jet plane is just a pencil puncturing that screen netting. It really does nothing to the screen netting.
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