An important point about the collapsing, and tis applied to WTC7 that was never hit by a plane, is that it happened at "freefall speed."
That means that the floor above, suddenly, did not have anything below it to hold it up. If there was some support then it would need to be bent out of the way and that takes time. Each floor would have added more time to the collapse but that never happened. When the upper floors started moving there was no resistance and there was no resistance over the whole area not just a corner that may have melted.
When a building is demolished using explosives they blow up all the supports below a particular floor at one time. The WTC buildings collapsed just like that and it is not possible to get that level of consistency with a fire..
An important point about the collapsing, and tis applied to WTC7 that was never hit by a plane, is that it happened at "freefall speed."
That means that the floor above, suddenly, did not have anything below it to hold it up. If there was some support then it would need to be bent out of the way and that takes time. Each floor would have added more time to the collapse but that never happened. When the upper floors started moving there was no resistance and there was no resistance over the whole area not just a corner that may have melted.
When a building is demolished using explosives they blow up all the supports below a particular floor at one time. The WTC buildings collapsed just like that and it is not possible to get that level of consistency with a fire..
That^ my friend is only one of the many fallibility of the 'official' story.