Iron has two different crystal structures at atmospheric pressure: the body centered cubic (bcc) and the face centered cubic (fcc). In the ground state the bbc α-phase is stable, and at the temperature T=1671 F (A3 point), α-Fe transforms into fcc α-Fe, which is stable up to 2537 F K(A4 point).
The Body-Centered Cubic (BCC) unit cell can be imagined as a cube with an atom on each corner, and an atom in the cube’s center. It is one of the most common structures for metals. BCC has 2 atoms per unit cell
The Face-Centered Cubic (FCC) unit cell can be imagined as a cube with an atom on each corner, and an atom on each face. It is one of the most common structures for metals. FCC has 4 atoms per unit cell
This means, that as the jet fuel burns at 1, 517 F, and heat is contained (such as in a building), as the iron/steel beams are heated, they at first expand - due to thermal heating. But, when the temperature of the iron/steel beams exceeds 1,671 F; the iron SHRINKS BY HALF
This PULLS the building down, melting is unnecessary.
What you are missing is the fact that the jet fuel was merely an accelerant. There were thousands of tons of petrochemicals and wood in those buildings in the form of carpet, vinyl, adhesives, furniture, paper, etc. Plenty of stored chemical energy to soften steel to the point where it can no longer bear the thousands of tons on top of it.
Then explain why the Grenfell Tower did not collapse? 24 story tower, fire breaks out on 4th floor, burns for 60 hours....60 HOURS. Let me guess....no jet fuel. Your soften steel argument is BS kiddo.
was a fully loaded passenger jet intentionally slammed into the Grenfell Tower at 600 MPH causing massive damage to multiple floors before the fire started?
Was the Grenfell Tower built using standard rigid box style riveted girder construction?
...or was it constructed with a "radical design" of a cantilevered open floor concept that bridged the central core to the outer skin facade using horizontal zig zag trusses which held metal pans to hold concrete with pretensioned wires inside?
don't you think it's fair to admit that you can design a building to withstand a fire, and you can design it to withstand an impact... but good luck designing it to survive an impact that destructive and a fire that burned that long at the same time.
You're just not being realistic/honest at all in your comparison and you're either doing it on purpose or it was done to you on purpose.
barely-below-the-surface investigation makes your assertions sound silly.
Iron has two different crystal structures at atmospheric pressure: the body centered cubic (bcc) and the face centered cubic (fcc). In the ground state the bbc α-phase is stable, and at the temperature T=1671 F (A3 point), α-Fe transforms into fcc α-Fe, which is stable up to 2537 F K(A4 point).
The Body-Centered Cubic (BCC) unit cell can be imagined as a cube with an atom on each corner, and an atom in the cube’s center. It is one of the most common structures for metals. BCC has 2 atoms per unit cell
The Face-Centered Cubic (FCC) unit cell can be imagined as a cube with an atom on each corner, and an atom on each face. It is one of the most common structures for metals. FCC has 4 atoms per unit cell
This means, that as the jet fuel burns at 1, 517 F, and heat is contained (such as in a building), as the iron/steel beams are heated, they at first expand - due to thermal heating. But, when the temperature of the iron/steel beams exceeds 1,671 F; the iron SHRINKS BY HALF
This PULLS the building down, melting is unnecessary.
What you are missing is the fact that the jet fuel was merely an accelerant. There were thousands of tons of petrochemicals and wood in those buildings in the form of carpet, vinyl, adhesives, furniture, paper, etc. Plenty of stored chemical energy to soften steel to the point where it can no longer bear the thousands of tons on top of it.
Then explain why the Grenfell Tower did not collapse? 24 story tower, fire breaks out on 4th floor, burns for 60 hours....60 HOURS. Let me guess....no jet fuel. Your soften steel argument is BS kiddo.
was a fully loaded passenger jet intentionally slammed into the Grenfell Tower at 600 MPH causing massive damage to multiple floors before the fire started?
Was the Grenfell Tower built using standard rigid box style riveted girder construction?
...or was it constructed with a "radical design" of a cantilevered open floor concept that bridged the central core to the outer skin facade using horizontal zig zag trusses which held metal pans to hold concrete with pretensioned wires inside?
don't you think it's fair to admit that you can design a building to withstand a fire, and you can design it to withstand an impact... but good luck designing it to survive an impact that destructive and a fire that burned that long at the same time.
You're just not being realistic/honest at all in your comparison and you're either doing it on purpose or it was done to you on purpose.
barely-below-the-surface investigation makes your assertions sound silly.
Couldn't tell ya. I'm just applying some common sense here.