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Has Anyone Seen A Realistice Explanation For Free Fall Of The Towers?

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Christophera said:
Empty words and these images prove it because IF steel core columns existed they would be seen in these images.

Here is the concrete core

Here is a segment of the concrete shear wall

Here is the rebar where some explosives failed and others did the job of removing the concrete leaving the vertical reinforcing bar.


Why can I produce evidence of the concrete core that also proves there were no steel core columns but you can produce no evidence of the steel core columns existence?



One guess.

There were no steel core columns.
They are a lie.
Click to expand...

WARNING, there is not concrete core only look at these photos if you have a high speed connection, and if you want to see no concrete just steel core! Beware you may not see the steel columns if you are a true tin foil hat Charlie Sheen fiend. WARNING

look here to see the core columns to the left

Core columns

oops read this then click for more core columns

This construction photograph of the North Tower shows that the core structures consisted of bundles of columns cross-linked by horizontal and diagonal members.

No concrete just steel, two points, game match set
 
Christophera said:
The structure stood for 33 years with its stored gravity equal to 248 tons of TNT. The impacts did not bring the towers down and the fires were not hot enough to bring them down.
Click to expand...

the impact damaged many of the supports and knocked off fire proofing, the fire weakened the steel and the PE was released as seen on 9/11.

I have proof it happened, you have tin foil hat sites of junk science whose references debunk the sites. Try it out check all the references on your site of 9/11 truth you have posted over and over, and you will find debunking facts, even of your concrete core in your fantasyland
 
Christophera said:
The structure stood for 33 years with its stored gravity equal to 248 tons of TNT. The impacts did not bring the towers down and the fires were not hot enough to bring them down. Don't try to argue it because that will not be reasonable. I am familiar with every argument you might bring and you do not even have proof of the structure you think stood. Before arguing, bring raw evidence of the steel core columns.
Click to expand...


The real life The lead structural engineer reflects on the rise and fall of the World Trade Center towers. Leslie E. Robertson said,

”It appears that about 25,000 people safely exited the buildings, almost all of them from below the impact floors; almost everyone above the impact floors perished, either from the impact and fire or from the subsequent collapse. The structures of the buildings were heroic in some ways but less so in others. The buildings survived the impact of the Boeing 767 aircraft, an impact very much greater than had been contemplated in our design (a slow-flying Boeing 707 lost in the fog and seeking a landing field). Therefore, the robustness of the towers was exemplary. At the same time, the fires raging in the inner reaches of the buildings undermined their strength. In time, the unimaginable happened . . . wounded by the impact of the aircraft and bleeding from the fires, both of the towers of the World Trade Center collapsed. “

Fires are what killed the WTC, as stated by Robertson.

The lead structural engineer. The EXPERT. Go find another one. In Jones paper he says no steel structure has ever fallen due to fire! FALSE; Madrid Windsor building, the parts of the Windsor building without concrete around the steel like the WTC fell. The entire building was too weak to keep! Jones and the truth movement are all basically telling lies and misleading all who lemming like follow.

Fires are what killed the WTC, as stated by Robertson.
 
11107453dca202e856.jpg
 
Christophera said:
The structure stood for 33 years with its stored gravity equal to 248 tons of TNT. The impacts did not bring the towers down and the fires were not hot enough to bring them down. Don't try to argue it because that will not be reasonable. I am familiar with every argument you might bring and you do not even have proof of the structure you think stood. Before arguing, bring raw evidence of the steel core columns.
Click to expand...

for the learning impaired, like me I shall repeat what a real expert said about this ----

The original structural engineering Leslie E. Robertson design for an aircraft
impact, but it was a slow speed landing configuration, 7 to 10 times less
energy at impact than the 9/11 impacts!


The original structural engineering Leslie E. Robertson said it was the 10,000
gallons of fuel they failed to consider (besides the order of magnitude larger
crash). Based on the design of the WTC, it is amazing the towers remained
standing as long as they did, surviving a impact blast 10 times greater than
design.


Leslie E. Robertson is a structural engineer who has designed hundreds of
buildings around the world including the World Trade Center.


Leslie E. Robertson, , said:
"The twin towers of the World Trade Center were designed to resist safely the
impacting by the largest aircraft of that time...the intercontinental version
of the Boeing 707. In no small measure because of the high level of
competence of the men and women of LERA, each of the towers resisted the
impact of an aircraft larger than the 707. Yes, fire brought down the towers,
but the structural integrity created by the engineers of LERA allowed perhaps
thousands of persons to evacuate the buildings prior to the fire-induced
collapse." http://www.engr.psu.edu/ae/WTC/LesRobertson.html


Leslie E. Robertson, , said: on being hit by a commercial jet -
" It appears that about 25,000 people safely exited the buildings, almost all
of them from below the impact floors; almost everyone above the impact floors
perished, either from the impact and fire or from the subsequent collapse. The
structures of the buildings were heroic in some ways but less so in others.
The buildings survived the impact of the Boeing 767 aircraft, an impact very
much greater than had been contemplated in our design (a slow-flying Boeing
707 lost in the fog and seeking a landing field). Therefore, the robustness of
the towers was exemplary. At the same time, the fires raging in the inner
reaches of the buildings undermined their strength. In time, the unimaginable
happened . . . wounded by the impact of the aircraft and bleeding from the
fires, both of the towers of the World Trade Center collapsed."

http://www.nae.edu/nae/bridgecom.nsf/weblinks/CGOZ-58NLCB?OpenDocument


Leslie E. Robertson, , said: more on design for jet impact –
" The two towers were the first structures outside of the military and nuclear
industries designed to resist the impact of a jet airliner, the Boeing 707. It
was assumed that the jetliner would be lost in the fog, seeking to land at JFK
or at Newark. To the best of our knowledge, little was known about the effects
of a fire from such an aircraft, and no designs were prepared for that
circumstance. Indeed, at that time, no fireproofing systems were available to
control the effects of such fires."

http://www.nae.edu/nae/bridgecom.nsf/weblinks/CGOZ-58NLCB?OpenDocument

More on Robertson -

http://interactive.wsj.com/fr/emailthis/retrieve.cgi?d=SB1002665463810757240.djm

http://www.engr.psu.edu/ae/WTC/LERPresentation.htm

Energy junk thrown in for free, the following are approximate energy;;; You can calculate the energy yourself – 707 impact design WTC was 386,215,069
joules (185 pounds of TNT) – WTC flight 11 impact 2,743,309,041 joules (1,311
pounds of TNT) - Flight 175 impacts 4,322,978,167 joules (2066 pounds of
TNT) – B-25 at Empire State Building impact 84,967,480 joules (41 pounds of
TNT)

A quick review
The original structural engineering Leslie E. Robertson said; -design of WTC included an impact only of a "slow-flying Boeing 707."

-"wounded by the impact of the aircraft and bleeding from the fires, both of
the towers of the World Trade Center collapsed"

your own photo post contradict you own conclusions about a concrete core and the original designer of the WTC contradict your ideas, now who are we going to trust

You are short of knowledge and judgment on this subject.
 
beachnut said:
for the learning impaired, like me I shall repeat what a real expert said about this ----

The original structural engineering Leslie E. Robertson design for an aircraft
impact, but it was a slow speed landing configuration, 7 to 10 times less
energy at impact than the 9/11 impacts!


The original structural engineering Leslie E. Robertson said it was the 10,000
gallons of fuel they failed to consider (besides the order of magnitude larger
crash). Based on the design of the WTC, it is amazing the towers remained
standing as long as they did, surviving a impact blast 10 times greater than
design.


Leslie E. Robertson is a structural engineer who has designed hundreds of
buildings around the world including the World Trade Center.


Leslie E. Robertson, , said:
"The twin towers of the World Trade Center were designed to resist safely the
impacting by the largest aircraft of that time...the intercontinental version
of the Boeing 707. In no small measure because of the high level of
competence of the men and women of LERA, each of the towers resisted the
impact of an aircraft larger than the 707. Yes, fire brought down the towers,
but the structural integrity created by the engineers of LERA allowed perhaps
thousands of persons to evacuate the buildings prior to the fire-induced
collapse." http://www.engr.psu.edu/ae/WTC/LesRobertson.html


Leslie E. Robertson, , said: on being hit by a commercial jet -
" It appears that about 25,000 people safely exited the buildings, almost all
of them from below the impact floors; almost everyone above the impact floors
perished, either from the impact and fire or from the subsequent collapse. The
structures of the buildings were heroic in some ways but less so in others.
The buildings survived the impact of the Boeing 767 aircraft, an impact very
much greater than had been contemplated in our design (a slow-flying Boeing
707 lost in the fog and seeking a landing field). Therefore, the robustness of
the towers was exemplary. At the same time, the fires raging in the inner
reaches of the buildings undermined their strength. In time, the unimaginable
happened . . . wounded by the impact of the aircraft and bleeding from the
fires, both of the towers of the World Trade Center collapsed."

http://www.nae.edu/nae/bridgecom.nsf/weblinks/CGOZ-58NLCB?OpenDocument


Leslie E. Robertson, , said: more on design for jet impact –
" The two towers were the first structures outside of the military and nuclear
industries designed to resist the impact of a jet airliner, the Boeing 707. It
was assumed that the jetliner would be lost in the fog, seeking to land at JFK
or at Newark. To the best of our knowledge, little was known about the effects
of a fire from such an aircraft, and no designs were prepared for that
circumstance. Indeed, at that time, no fireproofing systems were available to
control the effects of such fires."

http://www.nae.edu/nae/bridgecom.nsf/weblinks/CGOZ-58NLCB?OpenDocument

More on Robertson -

http://interactive.wsj.com/fr/emailthis/retrieve.cgi?d=SB1002665463810757240.djm

http://www.engr.psu.edu/ae/WTC/LERPresentation.htm

Energy junk thrown in for free, the following are approximate energy;;; You can calculate the energy yourself – 707 impact design WTC was 386,215,069
joules (185 pounds of TNT) – WTC flight 11 impact 2,743,309,041 joules (1,311
pounds of TNT) - Flight 175 impacts 4,322,978,167 joules (2066 pounds of
TNT) – B-25 at Empire State Building impact 84,967,480 joules (41 pounds of
TNT)

A quick review
The original structural engineering Leslie E. Robertson said; -design of WTC included an impact only of a "slow-flying Boeing 707."

-"wounded by the impact of the aircraft and bleeding from the fires, both of
the towers of the World Trade Center collapsed"

your own photo post contradict you own conclusions about a concrete core and the original designer of the WTC contradict your ideas, now who are we going to trust

You are short of knowledge and judgment on this subject.
Click to expand...

Seems to me that Chris is not interested in arguing today. :confused:
 
Oliver said:
11107453dca202e856.jpg
Click to expand...


proof, the jelly fish are going to the core, next to the floor, surrounded by the shell

now tell me, is this al clad steel structure just a big lightning rod or what?

can you show this non-concrete core structure to the concrete for brains core guy?

quick post of photo work ..

I can not find that rebar concrete guy was talking about in the core, nor can I find the concrete in the core, but I see some big columns in the core, made of steel those things are columns, lots of them, gee
 
Oliver said:
Shells were also involved? Holy Cow. :eek:

How could they survive all the time within the core? :confused:
Click to expand...

do not show the core photo to the concrete core head guy

he could die seeing that many steel columns all in the core without the wallboard on yet, he may die from steel column overload

notice how everyone is looking at the jelly fish arriving
 
beachnut said:
proof, the jelly fish are going to the core, next to the floor, surrounded by the shell

now tell me, is this al clad steel structure just a big lightning rod or what?

can you show this non-concrete core structure to the concrete for brains core guy?

quick post of photo work ..

I can not find that rebar concrete guy was talking about in the core, nor can I find the concrete in the core, but I see some big columns in the core, made of steel those things are columns, lots of them, gee
Click to expand...

Off course you can´t find any indications for a concrete core. It was a Jellyfish core and even Chris knows that but he is soooooo shy. Thats by he decribes it as concrete core to make it sound more masculine... :boggled:
 
Oliver said:
Seems to me that Chris is not interested in arguing today. :confused:
Click to expand...


this has to be old stuff to you guys

just looking up what the real experts said about his own building, the real stuctual guy who designed the building, he was really upset

chris better read what Robertson said, I am tried wasting time reading his web site which debunks itself, which is typical of truth sites
 
I can not find that rebar concrete guy was talking about in the core, nor can I find the concrete in the core, but I see some big columns in the core, made of steel those things are columns, lots of them, gee
Click to expand...

Those "columns" are obviously just the framework that the supporting jellyfish are attached to. If you look at the photo you can see the guy sitting on the beam just beginning to attach the first jellyfish to the form. In his left hand you will notice the large knitting needle that is use to interlace the tentacles of the jellyfish into a single structure.

11107453dca202e856.jpg
 
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Skibum said:
Those "columns" are obviously just the framework that the supporting jellyfish are attached to. If you look at the photo you can see the guy sitting on the beam just beginning to attach the first jellyfish to the form. In his left hand you will notice the large knitting needle that is use to interlace the tentacles of the jellyfish into a single structure.
Click to expand...

D@mn - even i didn´t recognized the knitting needles before. :eek: It starts to make sense know, even to me... :D
 
Christophera said:
Or, can you find a reference to any object ever that suddenly released its gravitational energy and destroyed itself without a qualified reason for the event?
Click to expand...

yes, my brother,

he was using a pulley to go up a tree

he grabbed the same side of the rope he was on, and suddenly fell to earth, releasing all the PE he had stored pulling himself up the tree and broke his neck

The WTC was hit by a fast aircraft, crippled it burned with the help of 10,000 gallons of accelerant, and then failed and it fell, releasing all the PE creating the scene you see at the WTC.
 
beachnut said:
this has to be old stuff to you guys

just looking up what the real experts said about his own building, the real stuctual guy who designed the building, he was really upset

chris better read what Robertson said, I am tried wasting time reading his web site which debunks itself, which is typical of truth sites
Click to expand...

But it does not explain the conspiracy why he´s here at JREF at all. :confused:
Covering the Jellyfish explosives?
 
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