The public has been told repeatedly that on 9/11, two skyscrapers (actually three!) were destroyed due to office fires which weakened the structures' steel.
With that in mind, a recent news story tells of a large building fire in Shanghai which unfortunately killed at least 40 people and injured dozens more at a block of flats. The apartment complex was under renovation, the fire spread to many of the 28 floors, and it took about 6 hours to get the fire under control. And yet... the building did not collapse!! This is very normal, as NO steel framed high-rise building in history has collapsed [due to fire], before or after 9/11. Not ever.
I urge you to read more about this and other serious, unanswered 9/11 questions at ae911truth.org.
(source)
Also, see this:
follow-up: http://www.hotelchatter.com/story/2009/2/19/164212/118/hotels/mandarin_Oriental_Beijing_After_the_Fire
