The building was seriously damaged by a huge chunk of debris weighing over eight tons. It was also badly damaged by fire. Have you built any buildings yourself? I have. I understand about how buildings are constructed; you don't.<quoted text>
We understand structural failure, just not the way NIST defines it. Besides NIST said they didn't know how building 7 collapsed, all they gave was a theory based on a computer model.
NIST Admits Total Collapse Of Twin Towers Unexplainable
The firefighters monitored it's tilt with a transit.
They pulled their people out and waited for it to come down, which it did.