Quote Originally Posted by Renton View Post
afaik the beams didn't melt, they were just weakened by heat, which happens at well under the melting point. And the molten metal that conspiratards were talking about wasn't steel, but aluminum, which has a lower melting point than steel, i believe.
The beams must have melted, otherwise it remains solid and therefore retains at least some of its ability to offer support to the building.

And are we talking about the molten metal seen pouring out of the corner of the tower? Who knows what that was? I saw a docu that claimed it was tested as iron. I treat both that claim and yours as speculative. Not that it matters. If it's just aluminium, it's not from the supporting beams.

It's clear that the fire got hot enough to melt steel. If it didn't, then the implication is that such a skyscraper is critically vulnerable to a standard office fire and we should evacuate every single steel supported skyscraper in the world as a matter of urgency until scientists understand completely why the steel failed.