[Georgia Girl 2]

Actually no jet fuel does not burn hot enough to melt steel but termite does.

[Pete from Shawnee Mission]

G.G. Thermite, which is used to weld steel railroad rails.

Rosie O Donnell believed that the steel burned and melted, but neither you or I or anyone else on this thread believes that. Steel does not need to melt to fail. In this case there was and initial shock of the fully loaded plane striking the building which stressed or cracked welds or bolts that held the junction of the floor trusses to the exterior frame. Steel initially expands when heated longer it is exposed to heat. Fuel did this. After time it begins to soften and deform downward. The floor sags, it pulls on the outside frame inward and it collapses to the center. Like this:

The floor supports were manufactured trusses NOT I beams.

NIST Final report on the Building 7 Collapse

The Plane was the fuel air bomb which caused the explosion. And yes, given enough velocity you can shatter through steel with an aluminum plane.

(Time for supper)

[David Chase]

You are correct.

However a prolong period of high heat will do the job.

That’s how metal was worked in ancient history. They did not have termite.

I recall the burning smoke coming from the collapsed buildings from the “pit” where they fell went on for more than two weeks.

Everyday I hoped it ended.

That also tells me there was great heat, O2 and a fuel supply from various objects to keep the burning going.

Those are the elements of fire. O2, Heat, and a Fuel (something that burns).
Take away just one of those and the fire dies.

Have a great day young lady.