All load support did fail simultaneously, once "global collapse" initiated. That is how the entire structure fell into its own foot print.
Why do you keep getting things wrong. Here is the debris radius.
It's own footprint?
Let's address the glaring errors in your claims before moving on shall we?
Yes, its own footprint. That debris radius is from pulverized materials. How come so much pulverization? What caused concrete to turn to dust?
All the concrete turned to dust eh?
You better do some more research my friend. Take a look at some of the photos from the following site.
World Trade Center Disaster Photos from 3-02-02