How did the twin towers and building 7 manage to collapse if its scientifically impossible ??
All sky scrappers have their structural beams coated with fire retardant materials so that in the event of a fire, the structural components don’t loose their strength. This is why fire has never caused a building collapse before. However, 9/11 was obviously different. The impact of the aircraft created a shock wave through the building. If you watch the video you can clearly see that the glass on the opposite side from the impact blows out when the plane enters the building. This was the shock wave of air. This shock wave blew the insulation off of the structural beams. Unfortunately the insulation was the spray on foam type, if it had been the blanket wrap type, it would not have blown off. With the insulation gone, the fire was able to heat the structural beams enough to weaken them to a failure point. I don’t want to think that the beams melted, that was not the case. However all metals, including structural steel, begin to loose their strength at temperatures well below their melt
