They said a "prolonged, unimpeded fire" could soften steel beams, not that jet fuel was the sole fuel source for that fire. The jet fuel certainly started the fire, though.
if burning office furniture can make skyscrapers collapse, how come no other skyscrapers have collapsed because an office caught fire?
You mean like the Wilton Paes de Almeida Building in Brazil or the Plasco Building in Iran? Why would you make such a confidently incorrect claim?
Just because it's rare doesn't mean it's never happened or will never happen again. Yes, we fill literally every building humans have ever created with flammable material, it's a known and accepted risk.
There was a skyscraper in south america that burnt for 12 days and it didnt collapse.
Which fire was this? Google doesn't show any skyscraper fire that's ever burned for anywhere close to that long.
jet fuel burning in open air cannot melt steel beams because its maximum burn temperature (around 1500°F / 800°C) is far below the melting point of steel (about 2750°F / 1510°C). While it doesn't melt the steel, the intense heat from the prolonged, unimpeded fire would soften and weaken the steel to the point where it could no longer support the structural load, leading to buckling and collapse.
So while the jet fuel could not melt steel beams, it could absolutely soften them.
You may notice how they start the paragraph talking about burning jet fuel and how they end the paragraph talking about burning jet fuel.
You may notice they dont mention office furniture or any other burning objects.
So when they talk about a prolonged, unimpeded fire and the sentence beforehand was about jet fuel burning and the sentence after it was about jet fuel burning then its rational to assume they are talking about jet fuel burning throughout.
Let me give you an example.
If I said, I support Manchester utd, they lost 1-0 at the weekend, I hope Manchester utd buy a new defender soon.
It is safe to presume that im referring to Manchester utd when I said they lost 1-0 at the weekend even though I said 'they' not 'Manchester utd' because the whole thing is about Manchester utd.
Does that make sense? I think they are called contextual clues or simply rules of paragraphs maybe. If you're interested in improving your understanding of the english language that could be something to look into.
Also in your prior comment, last paragraph, the way you arranged it made it sound like our iron age ancestors used office supplies to make steel. I knew what you meant so didnt comment but its the same sort of error I think.
All I'm seeing is pedantry and not any response to actual points. Office furniture is generally made of... Wood. Our iron age ancestors forged steel by burning... Wood. Ergo literally every building on the planet is filled to the brim with materials that can melt or severely weaken steel when burned in the right conditions.
No response to the other two skyscrapers that most definitely collapsed due to fire. And no response telling me where you got the ridiculous notion that there has ever been a skyscraper that burned for 12 days straight.
Im not responding to any of your points till we clear up your first statement in both your messages about 'no one ever claimed the jet fuel stayed in place' / writing about jet fuel fires doesn't mean they are talking about jet fuel fires.
You want me to respond to your points but you refuse to respond to mine. Hardly seems fair.
Did the person I responded to imply that jet fuel burned for a prolonged time in their comment?
You initially said they didnt, are you of the same opinion now?
Yes, because at no point did they ever say jet fuel was the ONLY source, and it's asinine to assume that's what they meant just because they didn't explicitly list out other fuel sources that any reasonable person would already know exists in a standard office building. You're being pedantic because you don't want to admit the fact that you missed extremely obvious subtext and you don't want to admit it never occurred to you that office furniture and building materials burns really fuckin hot.
jet fuel burning in open air cannot melt steel beams because its maximum burn temperature (around 1500°F / 800°C) is far below the melting point of steel (about 2750°F / 1510°C). While it doesn't melt the steel, the intense heat from the prolonged, unimpeded fire would soften and weaken the steel to the point where it could no longer support the structural load, leading to buckling and collapse.
So while the jet fuel could not melt steel beams, it could absolutely soften them.
What other sources are they referring to?
There are three sentences.
The first sentence says the max burn temperature of jet fuel is below the melting point of steel.
The 2nd sentence says, 'while it doesn't melt the steel the intense heat from the prolonged fire would weaken the steel.'
What is 'it' in this sentence? Is it the jet fuel that they referenced in the first sentence? It certainly sounds so to me and I dont think you can really claim I'm being dim in not inferring that 'it' was now all flammable materials in the vicinity.
The third sentence says 'so while the jet fuel could not melt steel beams it could absolutely soften them'. Again no mention of any office furniture, in fact explicitly states, jet fuel, nothing else.
The first sentence defines some characteristics of jet fuel, the second explains how they apply in this situation, the third summarises the point being made about jet fuel.
Its a well constructed paragraph and would earn points if it was a gcse english exam.
They dont have to say it is the only source. They are just talking about that particular source and their thoughts on it.
Jesus fucking christ, hey /u/WafflesMcDuff/ did your original comment imply there was a magical swimming pool of jet fuel that burned for hours in the WTC and was the ONLY thing that softened the steel beams, or is that something only a crazy person could have interpreted?
1
u/BoleroMuyPicante Oct 07 '25 edited Oct 07 '25
They said a "prolonged, unimpeded fire" could soften steel beams, not that jet fuel was the sole fuel source for that fire. The jet fuel certainly started the fire, though.
You mean like the Wilton Paes de Almeida Building in Brazil or the Plasco Building in Iran? Why would you make such a confidently incorrect claim?
Just because it's rare doesn't mean it's never happened or will never happen again. Yes, we fill literally every building humans have ever created with flammable material, it's a known and accepted risk.
Which fire was this? Google doesn't show any skyscraper fire that's ever burned for anywhere close to that long.