weisses wrote: » When you look at wtc7's collapse does it look like CD or a building coming down due to fire ?
weisses wrote: » Plus you did not ask for a reply ... Your post has nothing to do with the discussion I am trying to have so no its not a post I missed in that regard
King Mob wrote: » It looks like a building coming down due to fire. We know that it's not a controlled demolition.
weisses wrote: » evidently many demolition experts claim it looks like controlled demolition
weisses wrote: » You clearly dont understand how buildings normally behave under fire and buildings that are brought down by CD
weisses wrote: » evidently many demolition experts claim it looks like controlled demolition You clearly dont understand how buildings normally behave under fire and buildings that are brought down by CD
Dohnjoe wrote: » Why do you think other separate investigations have come to the same conclusion? why have these findings have been so overwhelmingly accepted by recognised groups of experts around the world? Why have findings been incorporated into national building codes? Why is there no other credible theory?
Dohnjoe wrote: » Here's an interesting read for you, and this isn't agreeing fully with the NIST's figures Bonus: he gets replies from Chandlerhttps://www.pepijnvanerp.nl/2019/01/did-wtc7-on-9-11-really-descend-in-free-fall-for-2-25-seconds-a-closer-look-at-the-nist-calculation/
In their preliminary report NIST had stated that based on the visible evidence it had found that when the exterior facade came down, 18 floors descended in 5.4 seconds, implying an acceleration about 40% lower than free fall acceleration. After questions were raised they had another look and in the final report they acknowledged that for a period of 2.25 seconds (within the 5.4 seconds) there appeared to be acceleration “equivalent to the acceleration of gravity g“. But they also wrote that this was still “consistent with the results of the global collapse analysis
Cheerful Spring2 wrote: » Pointed out to you in this thread many times
Cheerful Spring2 wrote: » This Skeptic acknowledging Chandler concerns and its good to see.
Dohnjoe wrote: » I recommend you reread the story, because you entirely missed the point.
Cheerful Spring2 wrote: » Read Chandler third post because he explains further why NIST measurements and camera angles are not an accurate way to identify freefall. Stage 1 is fantasy.
Conclusion Although it is true that NIST ‘admitted’ that for 2.25 seconds the exterior facade of WTC7 came down at an acceleration equal to free fall acceleration, I think it is fair to state that this was based on a questionable calculation. In my view, an acceleration of 9.46 m/s2 can be defended with arguments that are at least as good as those of NIST.Of course, the importance of this all is rather limited as it has no consequences for the models used by NIST to get a grip on why the building collapsed.
Cheerful Spring2 wrote: » Read
Dohnjoe wrote: » This is the conclusion
One more thing, the duration of freefall is clearly 2.5 seconds when viewed horizontally as it should be measured. The missing quarter second in NIST’s measurement is part of the gradual transition deception due to NIST’s intentionally chosen bad camera angle coupled with the choice of a point midway along the roofline where the anomalous motion would be maximized. I say intentionally chosen because they had all the same videos I have. I got my videos from NIST as part of a FOIA release.
NIST’s measurement is worse than you suggest. They state that they used Camera 3, as they labeled it, which is a view looking up at the building from West St. Near the onset of downward motion the building flexes laterally, but by choosing a point near the center of the roofline they conflate this lateral motion with the later downward motion. This is the source of the gradual transition seen in Stage 1 of their graph. Any competent scientists would know that to take good measurements you need to eliminate parallax, and since the guys at NIST are competent scientists, they knew what they were doing. They clearly intended to fudge the data to suggest a gradual transition, which they could pass off as some kind of natural process. If you do the measurement using the view that is level with the roofline you will see there is no initial sagging of the roofline and the transition from full support to full freefall is essentially instantaneous. The exact value you get when you fit a straight line to the linear portion of the descent will vary by a percent or so, depending on your choice of points to include in the regression, but your measurement, like mine, should be at or very near 9.8 m/s^2.
Dohnjoe wrote: » A thousand investigations like the NIST could be done into WTC 7. I guarantee there would be differences with every single one. There would be debated variables, that's because they are variables. There would be different estimates. There would be different takes on certain specific physics and chemical reactions. 9/11 conspiracy theorists don't seem to grasp this concept, instead they consistently follow irrational logic "Mistake" = conspiracy Difference of opinion = conspiracy Difference in simulations = conspiracy Don't understand something = conspiracy etc, etc
Cheerful Spring2 wrote: » The rare unusual steel anomalies is evidence of something else having happened.
Dohnjoe wrote: » You claimed that you haven't seen video footage of men not planting bombs, therefore that's evidence men planted bombs We aren't operating in any realm of logic or rational here
Cheerful Spring2 wrote: » If thiS first time in history collapse happened by fire
Dohnjoe wrote: » Here we go again. This is false. But using your logic.. First time in history buildings were secretly blown up by controlled demolition. Therefore by your logic they can't have been blown up No matter how many times the above two sentences are explained to you, you can't understand them.
Dohnjoe wrote: » First time in history buildings were secretly blown up by controlled demolition. Therefore by your logic they can't have been blown up.
Cheerful Spring2 wrote: » Difference is we know controlled demolition can bring down any building of any type.
Cheerful Spring2 wrote: » You have no evidence men did not walk into the building and do it. You assume it's impossible based on nothing. You don't know the level of access this crew had to the buildings and who was involved.
Cheerful Spring2 wrote: » I asked for one example
The National Institute of Standards and Technology this past Friday issued an update regarding the pending “request for correction” to its 2008 report on the collapse of World Trade Center Building 7. In an email sent to Architects & Engineers for 9/11 Truth, Daniel G. Cipra, a senior analyst in NIST’s Management and Organization office, wrote: “Your request for correction of information under the National Institute of Standards and Technology (NIST) Guidelines for Ensuring the Quality of Information Disseminated to the Public dated April 15, 2020, is currently under review. While our goal is to respond within sixty days to such requests, we are unable to do so in this case. A response providing the Agency’s view will be forwarded to you as soon as possible."
Cheerful Spring2 wrote: » NIST has responded to AE911 truth.https://www.ae911truth.org/news/695-nist-issues-update-on-pending-request-for-correction-to-building-7-report
Dohnjoe wrote: » They are referring to this craptacular documenthttps://files.wtc7report.org/file/public-download/RFC-to-NIST-WTC7-Report-04-15-20.pdf Remains to be seen whether they ignore it, or actually address it. Nothing they produce will ever satisfy those who have no intention of looking at the event objectivity, or those who still need to keep milking the tragedy for conspiracy subscriptions
Cheerful Spring2 wrote: » Looks like they have ignored it date August 13 passed, even though the promised to address every point made by AE911 truth in a letter in May/ June. No accountability so AE911 will likely start legal proceedings if they have not replied?
Two days before the August 13 deadline, NIST informed Architects & Engineers for 9/11 Truth (AE911Truth) that the response had been completed but was undergoing review by the U.S. Department of Commerce. When asked, NIST did not give an expected time frame for the review to be concluded.
Under the procedure governing requests submitted to NIST, the agency was supposed to provide an initial decision within 120 days of the submission, which made August 13, 2020, the deadline. If NIST elects in its initial decision not to take the corrective action sought, it must provide a “point-by-point response to any relevant data quality arguments contained in the request.” The requesters would then have 30 days to file an appeal with NIST Associate Director of Laboratory Programs James K. Olthoff. The procedure governing requests dictates that “No individuals who were involved in the initial denial will be involved in the review of or response to the appeal.” Mr. Olthoff’s decision would constitute the final decision of the Department of Commerce, of which NIST is a part.
should NIST fail to comply with the procedure governing requests (in a manner more severe than the current delay) or should it fail to rectify the information quality violations documented in the request, AE911Truth and its fellow requesters will likely pursue legal action under the Administrative Procedure Act.
Cheerful Spring2 wrote: » AE911 truth has released new information. Apparently NIST contacted them two days before the August 13th deadline.
King Mob wrote: » So crank fraudsters are bothering people and wasting their time to try and stay in the headlines.
Dohnjoe wrote: » They need to keep feeding their subscribers crumbs of hope. It's not like they are going to turn around and admit the whole thing is nonsense and stop all that money flowing.