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Originally posted by Trancer-X So who do you suggest had an arm big enough to throw both World Trade Center towers and then later in the evening, WTC tower 7? Zeus?

good to see trancer putting in all the effort to debate engineering with a civil engineer.

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Originally posted by Trancer-X So do you mean the 47 HUGE steel SUPPORT BEAMS were sucking the building into the ground? I don't see the logic here. How does it so easily violate physics?

ok ill try and explain this theory again... this time we will take out gravity from the equation. lets say you have car A parked in the middle of a freeway (Car A is a 1985 reliant K car) Car B (188 Ford Fiesta) impacts Car A at 50 mph. at the instant the two cars collide, the momentum of Car B generates an impulse thereby imparting a net force on Car A. as a result of the law of conservation of momentum, Car A begins to move forwards until the frictional force of the road on the tires is sufficient to bring it to a stop.


lets say a column has a euler buckling load of 110 KN (110 000 N)

a 1 Kg weight travelling at 10 m/s has an impusle force of 98.1 N/s whereas at rest it would only have a mass of 9.81 N


lets estimate that one floor had a weight of 500 tonne. lets also assume an impact velocity between 3 and 5 m/s.

500 000 KG * 9.81 * 4 (average velocity) = thats 19620 KN/s

assuming a load tranfer time of .5 sec, that brings the net force to 9810 KN


your 47 columns have a combined resistance of 47*110 = 5170 KN.....

the impulse force would crush themwhile still leaving a force of 4500 KN to accelerate this floor down in addition to the acceleration due to gravity.

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Originally posted by pkcRAISTLIN I have 3 hobbies: gaming, DJing & correcting maladjusted fools on the internet.

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Originally posted by pkcRAISTLIN Yeah, I’d like to know what horrible, scarring incident in your childhood turned you into such an ignorant, intellectual-hating philistine?

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Originally posted by colonelcrisp ok ill try and explain this theory again... this time we will take out gravity from the equation. lets say you have car A parked in the middle of a freeway (Car A is a 1985 reliant K car) Car B (188 Ford Fiesta) impacts Car A at 50 mph. at the instant the two cars collide, the momentum of Car B generates an impulse thereby imparting a net force on Car A. as a result of the law of conservation of momentum, Car A begins to move forwards until the frictional force of the road on the tires is sufficient to bring it to a stop. lets say a column has a euler buckling load of 110 KN (110 000 N) a 1 Kg weight travelling at 10 m/s has an impusle force of 98.1 N/s whereas at rest it would only have a mass of 9.81 N lets estimate that one floor had a weight of 500 tonne. lets also assume an impact velocity between 3 and 5 m/s. 500 000 KG * 9.81 * 4 (average velocity) = thats 19620 KN/s assuming a load tranfer time of .5 sec, that brings the net force to 9810 KN your 47 columns have a combined resistance of 47*110 = 5170 KN..... the impulse force would crush themwhile still leaving a force of 4500 KN to accelerate this floor down in addition to the acceleration due to gravity.

and I'll say it again in different words,

Going by your scenario, what do you propose that it was that impacted the top of the WTC twin towers and WTC7 that made them fall as though there was hardly any RESISTANCE whatsoever? (like in a vacuum)

I'm forwarding this all to Mr. Blacker at Physical Systems, btw - just because I want to get his professional opinion on why the laws of physics wouldn't all of a sudden need to be suspended for this scenario to work.

No matter what he says, I'll definitely repost any reply!

If your refferring to the trigger of the collapse, I believe it was heating of the steel beams which cause them to bend inwards and downwards, pulling the outer supports in with them. Eventually the building distabalised and that part of the building was completely pulled in, bringing everything from the floors above the crash down upon the lower floors.

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Dont expect profoundness so much as relentless and pathological destruction.

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Originally posted by The Arbiter If your refferring to the trigger of the collapse, I believe it was heating of the steel beams which cause them to bend inwards and downwards, pulling the outer supports in with them. Eventually the building distabalised and that part of the building was completely pulled in, bringing everything from the floors above the crash down upon the lower floors.

Going by your own deduction or are you simply repeating the official conspiracy theory?

So many of the witnesses said that it appeared to have been triggered by a big explosion.

You can definitely hear it on that last video.

That is the official cause and the science is solid.

Floor upon floor crashing into eachother. Your theory assumes this would be a silent proccess.

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Dont expect profoundness so much as relentless and pathological destruction.

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Originally posted by The Arbiter That is the official cause and the science is solid. Floor upon floor crashing into eachother. Your theory assumes this would be a silent proccess.

The science is flawed and the people who are trying to bring about a new investigation are being silenced and/or marginalized.

Mr. Blacker wouldn't have offered that challenge to Popular Mechanics if there was no refuting against their findings.

in his own words:

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It is physically impossible for the strongest, heaviest and (3 times working design load) bottom 80+ floors to offer near zero resistance to the falling floors except when there is a controlled demolition. Period!

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Originally posted by Trancer-X The science is flawed and the people who are trying to bring about a new investigation are being silenced and/or marginalized. Mr. Blacker wouldn't have offered that challenge to Popular Mechanics if there was no refuting against their findings. in his own words:

I cant see the stream. I can only assume its your one expert claiming that the floors in the WTC's were indestructable. Fail.

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Dont expect profoundness so much as relentless and pathological destruction.

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Originally posted by The Arbiter I cant see the stream. I can only assume its your one expert claiming that the floors in the WTC's were indestructable. Fail.

No, it was a compilation made from video footage, eyewitness testimony and news reports which included some of the explosions which were heard on that fateful day.

Sorry

The sound of explosions has already been explained by the origonal theory. Now you must disprove that theory although I admit Im at a disadvantage not being able to see the streams.

___________________
Dont expect profoundness so much as relentless and pathological destruction.