This is not a science lesson per se, it is simple engineering logic.

Individual floors bear their own weight plus whatever live load they are designed to bear, holding up the weight of the building is the job of the vertical support columns.
IOW, the vertical columns held up the individual floors, individually.
IOW, in the twin towers, floor number 10, for example, did not support the weight of floors 11 through 110.
IOW, in the South Tower, for example, when the vertical support failed at the 80th floor, the combined weight of floors 80 through 110 collapsed onto floor number 79. Then, a second or so later, the combined weight of floors 80 through 110 PLUS the weight of what remained of floor 79 collapsed onto floor number 78. And so on all the way down. One floor at a time.

The combined weight of floors 80 through 110 included the weight of 30 office floors plus the live loads each individual floor supported, the weight of all perimeter columns from the 80th to the 110th floor, and the weight of the core support columns from the 80th to the 110th floors, 30 core floors plus the live loads each individual core floor supported.

The vertical columns in the core & outer frame supported all the floors individually by weld on supports... each individual floor had a weight limit of 1300Tons due to these weld on supports... the weld on supports failed from a massive overload on 911 not silent high explosives... the fact that you can't comprehend this is amazing...by the way your stupid brick experiment doesn't even have any floors to prove anything... But all this should not really surprise me from someone who stated that the sheetrock should have stopped the collapse to begin with... you prove there is no limit to ignorance ... a framed tube structure is in fact a stack of individual floors supported by inner & outer massive vertical columns...

The vertical columns in the core & outer frame supported all the floors individually by weld on supports... each individual floor had a weight limit of 1300Tons due to these weld on supports... the weld on supports failed from a massive overload on 911 not silent high explosives... the fact that you can't comprehend this is amazing...by the way your stupid brick experiment doesn't even have any floors to prove anything... But all this should not really surprise me from someone who stated that the sheetrock should have stopped the collapse to begin with... you prove there is no limit to ignorance ... a framed tube structure is in fact a stack of individual floors supported by inner & outer massive vertical columns...

If you're talking about the floor slabs independently, why don't you say floor slab? Of course the vertical columns hold up the floor slabs. The floor slabs cannot fall independently of the rest of the tower and they cannot cause a tower to collapse. Each of the towers had more than 9,000 steel floor trusses which connected the outer wall columns to the inner core columns. Each floor slab on the towers was in the shape of a square donut. Interior walls on many of the floors added more support to the floor slabs. There is no way the floor slabs could fall independently but it is the only way you cover-up shills can falsely explain collapse without explosives being involved.

Hey, payne, hello, anybody home? A floor DOES NOT include the walls, where you got that idea is anyone's guess.

When I refer to the WTC tower floors, I mean the floors, which includes the slabs and the trusses. Forget the psychobabble about independent floors and hinged truss connections and straws and brick experiments, just explain how an individual WTC tower floor provided any support for a floor or floors above it..

In response to your second comment, I'll tell you why I posted the photo of WTC7 if you first show proof that the photo was faked. It is a fact that a large section of the North Tower perimeter wall tore a deep gash across 18 lower floors along the SW corner of WTC 7. This debris was hot enough to set fires in the lower floors of WTC7 which progressed upward through the building. So, if you are going to claim the photo was faked, you need to prove it, and to give any credibility to your claim, we'll need the name or names of those who faked it.