Apparently there were no walls or doors inside the perimeter. Just a bunch of steel beams holding everything up. I see. So you are saying that fuel flying through a building burns faster than at other times? I don't believe you. Show some of your own FACTS (not conjecture).
Look at the 2nd crash. A lot of fuel burned up outside the building, it was moving and it was totally consumed in less than 10 seconds. That is all the proof you shopuld need, but for whatever reason it won't be.
In a building like the towers all the interier wall are non-load bearing ones. On any floor they could all be removed and it would be just as strong. Since the fuel did make it's exit across the building it is also apparent that the walls were flattened.
Not seeing is exactly your problem. I posted facts but you apparently are too blind to see them or too old to remember them. I remember back a few days when you said the heat from the fire would do nothing to the steel. You were shown to be wrong. Then you tried the explosives bit and posted a couple URLs for some other conjectures. And so on and so forth. Yeah, run away when people punch holes in your frail little arguments.
No I quit threads when it comes down to this sort of post, here is a great chance to punch a hole in one of my arguments (there is more than one). Show me the data that compares the stress on either tower that compared the planes force at impact compared to 140mph winds. It doesn't get any simpler than that.
Go buy some scrap-iron I-beam and sink one end into the ground and attach a cable to the top (12" x 20' should do the trick) Now put a big poop of fuel at the base and light it, time how long it takes before the I-beam falls over by itself. After 24 hrs of fire pull on the cable with a D8 and measure the torque on the cable to the point the I-beam bends. Now do the same to a beam that has had no fire. The difference will be what heat caused.
Now build a model that has those same size I-beams in number the same as the tower had and weld plates between them all every 10 ft in height. In this case it would be a 0', 10', and 20'. Now repeat your experiment with fire except this time you would need several D8's and the structure would still be standing.