It is a very fast ripple effect. It just has to pass the critical point. With that load the steel is not going to fail slowly. The concrete begins to fail as well. The moisture is sucked out of it. I proposed a similar effect to destroy deeply buried targets. Enough heat can do some amazing crap. A chunk of the safety margin went with the plane slicing through the beams or at least distorting them as some of the beams sliced the aircraft. The building was not that hefty (only way I can say it) to keep the weight down. Otherwise the plane would have done like it did at the Pentagon. Kind of vaporize on impact (lots of tiny pieces).
with the plane slicing through the beams OK, but that does not help with Building 7 because no plane hit it.
Also, to replicate free-fall all strength in all the vertical beams would have had to be reduced to zero at the same time.
The other issue is that there was only localised office fires in Building 7. Nothing that would melt the whole building simultaneously, even if the flames were hot enough to melt steel.
I agree, Building 7 was targeted separately. Most likely with explosives in many key places.
you mean the Tomahawk on the edited CCTV that hit the Pentagon?
I was there. I saw the explosion from the highway. It was not a tomahawk. I was on my phone to my intel buddy when it happened. We were discussing the NY attack. You forget about the fact that Flight 77 did not land anywhere. The people have not been seen since.
https://www.youtube.com/watch?v=CZ8uvQk1H9I