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Originally posted by ImAPepper
You are chock full of Stundies today Roger. NIST was not included because they were NOT HIRED TO INVESTIGATE THE PLANE CRASHES!! Go read the outline of their goals and objectives. I refuse to give you anymore links, you do your own homework.
Hey Roger, for the sake of argument, you are hired to find out what happened to a automobile during a car crash. You show up on the scene on Friday afternoon and find out the car was sent off to the junk yard a week prior.
You don't have to go to a website at all.
I would recommend that you read the NIST report on the collapses.
What you don't understand, you find someone that does. Structural Engineers can be found at any University.
There are blogs and forums that cater to Engineering professionals. You can go there and ask questions. I doubt you will though.
1. Destruction proceeds through the path of greatest resistance at nearly free-fall acceleration
2. Improbable symmetry of debris distribution
3. Extremely rapid onset of destruction
4. Over 100 first responders reported explosions and flashes
5. Multi-ton steel sections ejected laterally 600 ft at 60 mph
6. Mid-air pulverization of 90,000 tons of concrete & metal decking
7. Massive volume of expanding pyroclastic-like clouds
8. 1200-foot-dia. debris field: no "pancaked" floors found
9. Isolated explosive ejections 20 – 40 stories below demolition front
10. Total building destruction: dismemberment of steel frame
11. Several tons of molten metal found under all 3 high-rises
12. Evidence of thermite incendiaries found by FEMA in steel samples
13. Evidence of explosives found in dust samples
14. No precedent for steel-framed high-rise collapse due to fire
And exhibited none of the characteristics of destruction by fire, i.e.
1. Slow onset with large visible deformations
2. Asymmetrical collapse which follows the path of least resistance (laws of conservation of momentum would cause a falling, intact, from the point of plane impact, to the side most damaged by the fires)
3. Evidence of fire temperatures capable of softening steel
4. High-rise buildings with much larger, hotter, and longer lasting fires have never “collapsed”
Why the World Trade Center Buildings Collapsed
A Fire Chief ’s Assessment
His assessment is an eye-opener
there could be more WTC collapses waiting to happen.
If you conspiracy people are so dedicated to the truth then why isn't a re-analysis of possibly faulty building codes the number one priority on your list,
(manufactured evidence, secret links to Nazis, whatever)
your ridiculous conspiracy web sites are churning out?
That "everyone who disagrees with you is a secret gov't agent" crutch you use to prop your conspiracy stories up with only goes so far, you know.
This guy's "biased opinion" is just a theory, right?
Sounds like a 'damn fool theory' to me.
Dave, why don’t you tell us the names of the websites that you believe are giving out only truthful information about 911?
The entire one hundred and ten-story building collapsed in 8 seconds... After a fire burned inside WTC tower number one for 102 minutes, the top 30 floors collapsed on the lower 80 floors. And the entire one hundred and ten stories of this building collapsed in 10 seconds.
You can say the reason they collapsed was they were struck with a 185 ton jet airliner and the 24,000 gallons of jet fuel caused a fire of 1500 to 2000 degrees F which weakened the steel and cause the collapse.
Or you can take a closer look at the buildings construction of the WTC buildings. And ask yourself why did these structures collapse so fast and so completely. The answer can be found by examining high-rise construction in New York City over the past 50 year
Statements by Engineers
Engineers who participated in the design of the World Trade Center have stated, since the attack, that the Towers were designed to withstand jetliner collisions. For example, Leslie Robertson, who is featured on many documentaries about the attack, said he "designed it for a (Boeing) 707 to hit it." 2 Statements and documents predating the attack indicate that engineers considered the effects of not only of jetliner impacts, but also of ensuing fires.
John Skilling
John Skilling was the head structural engineer for the World Trade Center. In a 1993 interview, Skilling stated that the Towers were designed to withstand the impact and fires resulting from the collision of a large jetliner such as Boeing 707 or Douglas DC-8.
Our analysis indicated the biggest problem would be the fact that all the fuel (from the airplane) would dump into the building. There would be a horrendous fire. A lot of people would be killed, ... The building structure would still be there. 3
A white paper released on February 3, 1964 states that the Towers could have withstood impacts of jetliners travelling 600 mph -- a speed greater than the impact speed of either jetliner used on 9/11/01.
The buildings have been investigated and found to be safe in an assumed collision with a large jet airliner (Boeing 707—DC 8) traveling at 600 miles per hour. Analysis indicates that such collision would result in only local damage which could not cause collapse or substantial damage to the building and would not endanger the lives and safety of occupants not in the immediate area of impact. 4
The Richard Roth Telegram
On Feburary 13, 1965, real estate baron Lawrence Wien called reporters to his office to charge that the design of the Twin Towers was structurally unsound. Many suspected that his allegation was motivated by a desire to derail the planned World Trade Center skyscrapers to protect the value of his extensive holdings, which included the Empire State Building. In response to the charge, Richard Roth, partner at Emery Roth & Sons, the architectural firm that was designing the Twin Towers, fired back with a three-page telegram containing the following details. 5
[color=gold]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.
BECAUSE OF ITS CONFIGURATION, WHICH IS ESSENTIALLY THAT OF A STEEL BEAM 209' DEEP, THE TOWERS ARE ACTUALLY FAR LESS DARING STRUCTURALLY THAN A CONVENTIONAL BUILDING SUCH AS THE EMPIRE STATE BUILDING WHERE THE SPINE OR BRACED AREA OF THE BUILDING IS FAR SMALLER IN RELATION TO ITS HEIGHT.
[color=gold]5.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. ...
At the time the Twin Towers were built, the design approach of moving the support columns to the perimeter and the core, thereby creating large expanses of unobstructed floor space, was relatively new, and unique for a skyscraper. However, that approach is commonplace in contemporary skyscrapers.
Frank Demartini's Statement
Frank A. Demartini, on-site construction manager for the World Trade Center, spoke of the resilience of the towers in an interview recorded on January 25, 2001.
[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.
Demartini, who had an office on the 88th floor of the North Tower, has been missing since the 9/11/01 attack, having remained in the North Tower to assist in the evacuation. 6 Demartini had first worked at World Trade Center when Leslie E. Robertson Associates hired him to assess damage from the truck bombing in 1993.
[edit on 23-2-2010 by impressme]
Effects of jet crash and fire on a skeleton steel high rise
A plane that only weighted 10 tons struck the Empire State Building and the high-octane gasoline fire quickly flamed out after 35 minutes. When the firefighters walked up to the 79 floor most of the fire had dissipated. The Empire State Building [color=gold]in my opinion, and most fire chiefs in New York City, is the most fire safe building in America. [color=gold]I believe it would have not collapsed like the WTC towers. [color=gold]I believe the Empire State Building, and for that matter any other skeleton steel building in New York City, would have withstood the impact and fire of the terrorist’s jet plane better than the WTC towers. If the jet liners struck any other skeleton steel high rise, the people on the upper floors and where the jet crashed may not have survived; there might have been local floor and exterior wall collapse. However, [color=gold]I believe a skeleton steel frame high rise would not suffer a cascading total pancake collapse of the lower floors in 8 and 10 seconds. Hopefully some engineer using computer calculations, can reconstruct the effects of a 767 jetliner crashing into another New York City high building. In any other high rise in New York City, I say, the floors below the crash and fire, would not collapse in such a total a cascading pancake cave-in. Most of the occupants and rescuers killed in the WTC tower collapse were on the lower floors.
Originally posted by impressme
I was asking Dave, not you.
I have, and I recommend that YOU read the NIST report of the WTC demolition.
You mean these Structural Engineers do not have a website?
You mean they have and “can prove” that NIST pseudo is in fact not phony science?
Tell you what, why don’t YOU give us a website of “Engineering professionals” that Proves NIST report is scientifically correct and shows where A&E have disputed NIST findings are all wrong?
1. Destruction.....
Originally posted by TaZCoN
hmmm...
Who should one trust?
1052 architectural and engineering professionals.
Or several forum jockeys on jref forums?
Originally posted by TaZCoN
hmmm...
Who should one trust?
1052 architectural and engineering professionals.
Or several forum jockeys on jref forums?
Originally posted by Alfie1
Originally posted by TaZCoN
hmmm...
Who should one trust?
1052 architectural and engineering professionals.
Or several forum jockeys on jref forums?
Personally, I would prefer the American Society of Civil Engineers. They don't buy the cd at the WTC nonsense and their membership is in excess of 110,000.
Originally posted by impressme
Dave you are so funny!
I fell out of my chair laughing so hard when I read your your source.
Dave your Deputy Chief Vincent Dunn left out the sciences and is only giving his “bias opinions.”
Originally posted by GoodOlDave
It is now YOUR responsibility to explain why the assessment of Fire Chief Dunn is incorrect.
Originally posted by benoni
Dave is a conspiracy in himself......
what his modus operandi is I do not know....
...quite poor in execution though......"Nazis" Dave???
Thats a new one...you tend to prefer laser beams, ufo's and tinfoil hat besmirches....are they not cutting through or are you trying a different approach??
Jeez....
Hey Roger, for the sake of argument, you are hired to find out what happened to a automobile during a car crash. You show up on the scene on Friday afternoon and find out the car was sent off to the junk yard a week prior. Would NIST have liked some steel from the WTC7 collapse? I would assume so. Just like you would have liked the car not to have been destroyed at the junk yard. You make do with what you have.