You're correct.As regards qualifications. I have a degree in civil engineering, including steel frame construction . However, very few engineers would have the experience in designing say a 70 level building and I dont ether, although I have worked on 50 storey ones, in their construction.
I doubt there is anyone on this thread, actually I know well, that there is nobody on this thread who worked on designing tall building and they are just pasting and googling.
No. Beams stay as beams without an external force.
Actually they can and have. Every structure has a frequency and if a wave acts upon it with the same frequency, even steel will collapse, or a wine glass will shatter.No one believes that steel beams can buckle in the wind. The trolls are just finding answers blowing in the wind. We know it was a controlled demolition.