Explosions Before The Collapse of WTC 7

[AtheistCrusader]

41. Madrid Tower fire. All the upper floors are framed in steel and they collapse two hours into the

fire.

The building was hybrid concrete/steel The floors below the 2nd Technical Floor are all concrete and survive the fire. Above the 2nd Technical Floor, the building was framed in steel with a concrete core, because steel allows for smaller support columns and expansive views for conference rooms and expensive penthouses.

The fire started from a small electrical fire, and spread, and 2 hours in, the steel areas of the building were collapsing and raining down into the street like molten butter. After the fire, all that remained was a few beams here and there, bent and sheared off by the heat, and the concrete.

And that's from a conventional fire that spread from a single ignition source, with no airliner impact and fuel to spread the fire all over the place.