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Originally posted by Segador
Oh wow, the Truthers begin calling OP out even though he didn't claimed he supported the OS in the first post.
Presumptuous much?
So are we saying that on that fateful day of 9/11 all three of the WTC's that fell were so perfect even though it has been done before. ITS too perfect and the chances of three perfect demolitions of that size when NEVER been done before is astronomical.
Originally posted by L1U2C3I4F5E6R
Right, lets put this to bed once and for all.
Originally posted by L1U2C3I4F5E6R
What is the probability of 3 perfect demolitions on 3 buildings in the same day when nothing near the height of those buildings had ever been imploded in a controlled demolition in HISTORY. EVER. NEVER.
Originally posted by L1U2C3I4F5E6R
The tallest building world record for a controlled demolition is the following:
Originally posted by L1U2C3I4F5E6R
Now, even WTC 7 was 20 stories higher and nothing like that had ever been tried.
Originally posted by L1U2C3I4F5E6R
ITS too perfect and the chances of three perfect demolitions of that size when NEVER been done before is astronomical.
Originally posted by L1U2C3I4F5E6R
I am saying that this scenario is not that possible. I am just saying that CD explosives were NOT used.
Originally posted by L1U2C3I4F5E6R
Truthers are still walking around saying Explosives were used to bring down the buildings and that a CD company was used.
Originally posted by L1U2C3I4F5E6R
Those with their sarcasm, are just a bit to dim to look at this for themselves and need to follow everyone else.
Originally posted by okbmd
Those towers were designed and built with radically new and unproven architectural concepts .
Originally posted by okbmd
Those towers WERE NOT designed to withstand any impacts from aircraft , I don't care how many leslie robertsons you quote .
Originally posted by okbmd
They lied , plain and simple .
Originally posted by okbmd
A little research is probably in order , to see how many other buildings were built on this design
Originally posted by okbmd
The towers were death traps
Originally posted by okbmd
I'm willing to bet that this design will never again be employed in the construction of a highrise .
Originally posted by okbmd
Exactly , the original architects and engineers are obviously going to say the towers were designed to withstand impacts from planes , for the very obvious reason that they are terrified of 3,000 wrongful death lawsuits that could be filed in civil court , once negligence is proven .
Originally posted by GoodOlDave
They'll say the people in NIST and FEMA are lying
Originally posted by GenRadek
Why did there have to be explosives in there to bring them down? Why couldnt it have just been massive structural failure from impact and fires, combined with gravity?
Originally posted by GenRadek
Also there wasnt massive structural failure? Well then golly gee, why does NIST mention the darn buildings collapsed when the structures failed??
Originally posted by GenRadek
The problem with WTC was that they used light steel cord trusses in the design
Originally posted by GenRadek
You mean having the top 30+ floors tilting over in one piece not a signal of massive structural failure?
Originally posted by GenRadek
And i watched that horrible video in that thread, and wont go into whats wrong with its premise.
Originally posted by GenRadek
I dont understand how you can say that NIST didnt say there was massive structural failure
Editorial Reviews From the Back Cover For a time, its towers were the tallest buildings on earth, and The World Trade Center-an engineering marvel-came to symbolize American prosperity and strength. Recalling a more innocent era, this new production from THE HISTORY CHANNEL was filmed just months before the towers' tragic demise and subsequently enriched with heartfelt reflection from host Harry Smith. "World Trade Center: In Memoriam" charts the history of the towers' construction, revealing the controversies, decitsions and innovations that surrounded the project, and-through interviews with those who proudly and ambitiously dreamt, designed and built the complex-examines the monument as both architectural achievement and cultural icon. What emerges is not ony a tribute to a building, but an inspiring and intimate story of the birth and growth of an American symbol.
For those who still question what Larry Silverstein meant when he said "pull it" when talking about the collapse of the WTC 7, Jeff from PumpItOut.com called demolition experts Controlled Demolition, Inc (CDI) and asked them what "pull it" means in demolition terms. This is what CDI told him:
Originally posted by GenRadek
reply to post by kiwifoot
Why did there have to be explosives in there to bring them down? Why couldnt it have just been massive structural failure from impact and fires, combined with gravity? After all, there seemed to be more than enough potential energy in those towers to have them collapse as they did. .
The WTC buildings were only designed to take the impacts from one Boeing 707 to each building at the time of completion in 1974. They weren't designed to take the impacts of a Boeing 757 and a 767, which were much larger, faster and carried more fuel loads than the Boeing 707. The WTC buildings could take multiple impacts from smaller lightweight planes, but never multiple impacts from Boeing's 707s, 757s and 767s.
Originally posted by L1U2C3I4F5E6R
Originally posted by GenRadek
reply to post by kiwifoot
Why did there have to be explosives in there to bring them down? Why couldnt it have just been massive structural failure from impact and fires, combined with gravity? After all, there seemed to be more than enough potential energy in those towers to have them collapse as they did. .
There seems to be quite a lot of evidence that Structural Integrity failure could of brought the towers down.
Here is a fact some truthers do not know OR choose to ignore.
The WTC buildings were only designed to take the impacts from one Boeing 707 to each building at the time of completion in 1974. They weren't designed to take the impacts of a Boeing 757 and a 767, which were much larger, faster and carried more fuel loads than the Boeing 707. The WTC buildings could take multiple impacts from smaller lightweight planes, but never multiple impacts from Boeing's 707s, 757s and 767s.
There seems to be quite a lot of evidence that Structural Integrity failure could of brought the towers down.
Here is a fact some truthers do not know OR choose to ignore.
[color=gold]The World Trade Center Building Designers: Pre-9/11 claims strongly implicate Towers should have remained standing on 9/11
“The structural analysis carried out by the firm of Worthington, Skilling, Helle & Jackson is the most complete and detailed of any ever made for any building structure. The preliminary calculations alone cover 1, 200 pages and involve over 100 detailed drawings… [color=gold]The building as designed is sixteen times stiffer than a conventional structure. The design concept is so sound that the structural engineer has been able to be ultra-conservative in his design without adversely affecting the economics of the structure.”[3]
Like many modern structures and buildings, the WTC Towers were over-designed to withstand weight distribution in the event of structural damage. According to calculations made by the engineers who helped with the design of the Twin Towers, “all the columns on one side of a Tower could be cut, as well as the two corners and some of the columns on each adjacent side, and the building would still be strong enough to withstand a 100-mile-per-hour wind.”[5] As well, “Live loads on these columns can be increased more than 2,000% before failure occurs.”[6]
“Our analysis indicated the biggest problem would be the fact that all the fuel (from the airplane) would dump into the building. [color=gold]There would be a horrendous fire. A lot of people would be killed…[color=gold] The building structure would still be there.”[14]
“[color=gold]The building was designed to have a fully loaded 707 crash into it. That was the largest plane at the time. I believe that the building probably could sustain multiple impacts of jetliners because this structure is like the mosquito netting on your screen door—this intense grid—and the jet plane is just a pencil puncturing that screen netting. It really does nothing to the screen netting.”[25]
“The Office of Special Planning (OSP), a unit set up by the New York Port Authority to assess the security of its facilities against terrorist attacks, spends four to six months studying the World Trade Center. It examines the center’s design through looking at photographs, blueprints, and plans. It brings in experts such as the builders of the center, plus experts in sabotage and explosives, and has them walk through the WTC to identify any areas of vulnerability…”O’Sullivan consults ‘one of the trade center’s original structural engineers, Les Robertson, on whether the towers would collapse because of a bomb or a collision with a slow-moving airplane.’ [color=gold]He is told there is ‘little likelihood of a collapse no matter how the building was attacked.’”[7]
One of these hypothetical examples was put to the test in the 1993 WTC bombing. This attack prompted more discussions about the safety of the WTC towers. In response to these concerns, WTC building designer John Skilling explained that they “looked at every possible thing we could think of that could happen to the buildings, even to the extent of an airplane hitting the side… A previous analysis carried out early in 1964, calculated that the towers [color=gold]would handle the impact of a 707 traveling at 600 mph without collapsing.”[8]
Your opinions have no bearing when it comes to these experts and the original building designers. Or are you just going to ignore these facts as well.
We had designed the project for the impact of the largest airplane of its time, the Boeing 707. The 767 that actually hit the WTC was quite another matter again. First of all it was a bit heavier than the 707, not very much heavier, but a bit heavier. But mostly it was flying a lot faster. And the energy that it put into the building is proportional to its square of the velocity, as you double the velocity, four times the energy. Triple the velocity, eight times the energy and so forth.
And then of course with the 707 to the best of my knowledge the fuel load was not considered in the design, and indeed I don't know how it could have been considered. But, and with the 767 the fuel load was enormous compared to that of the 707, it was a fully fuelled airplane compared to the 707 which was a landing aircraft. Just absolutely no comparison between the two.