@ ElMondoHummus: NIST asserting that free fall did not happen appears to be a statement attempting to assert that free fall did not occur. Whether there was 2.25 seconds of free fall, or 6.9 seconds, I'm not understanding how you are interpreting their statement as only applying to the 'entire collapse'. 'Did not enter free fall' seems pretty self-explanatory.
For example, if I'm a traffic cop, and I clock you on radar at 100mph as you are traveling between LA and San Diego, and you go in to court and say, "Hey judge, I traveled the x miles in x minutes---and there was a traffic cam that took a picture of my car leaving LA and arriving in San Diego---so, I could not have driven my car at 100mph," would that sort of logic stand up in court or fool the judge?
Cheers,
Kurt
Rather predictable response. One which betrays a lack of knowledge of what occurred on that day, as well as what Chandler demonstrated.
Here, I'll use an analogy. Take a look at this picture:
That's an experimental turboprop aircraft called the
XF-84H. Obscure little thing. Not many were produced, and it failed to live up to its expectations, so its program was cancelled.
It once held the distinction of being the fastest single-engine propeller driven aircraft ever created, only barely beaten out nearly 40 years later. The expectations were to achieve 670 MPH by design; practical testing had it actually get up to 520 MPH. Speedy aircraft. But not supersonic; even by design, it's top speed was supposed to be Mach 0.9, and the 520 MPH it achieved ended up being Mach 0.7 at the altitude it flew at. So, it didn't quite hit the Mach 1.0 speed.
Yet, by your logic, the jet is supersonic.
Yes.
Your logic.
Go back and read what wrote back there:
Neither. They were correct in their assertion. The Chandler finding is limited to only a portion of the building for a portion of the collapse. Their assertion applied to the entire collapse, and is demonstrably correct.
Now read about the XF-84:
... propeller, consisting of three steel, square-tipped blades turning at a constant speed, with the tips traveling at approximately
Mach 1.18.
Part of 7 World Trade's north face fell for a fraction of time at a rate equal to that of free fall. The tips of the propeller on the XF-84 manage to reach Mach 1.18.
You understand now how I am "
...interpreting their (sic)
statement as only applying to the 'entire collapse"? I say this because
they came out and said it:
- In Stage 1, the descent was slow and the acceleration was less than that of gravity. This stage corresponds to the initial buckling of the exterior columns in the lower stories of the north face, as seen in Figure 12-62. By 1.75 s, the north face had descended approximately 7ft.
- In Stage 2, the north face descended at gravitational acceleration, as exterior column buckling progressed and the columns provided negligible support to the upper portion of the north face. This free fall drop continued for approximately 8 stories (105ft), the distance traveled between times t = 1.75 s and t = 4.0 s.
- In Stage 3, the acceleration decreased somewhat as the upper portion of the north face encountered resistance from the collapsed structure and the debris pile below. Between 4.0 s and 5.4 s, the northwest corner fell an additional 130 ft.
NCSTAR 1-9 Vol 2, p. 602
See what they're saying? See how they say that the first "stage's" acceleration was "less than that of gravity"? See how they say that in Stage 3, acceleration decreased and "encountered resistance"? Note that they're saying the "gravitational acceleration" descent was isolated to just a portion of the total collapse? And note how they differentiate between the entire north face and the upper portion of it?
The difference between "part" and "the whole thing" cannot be any clearer. You should not ignore this point. And if you view yourself to be honest, you should not try to obsfucate this point in future posts. NIST is very clear and precise in what they're saying. They're saying that the "free fall" portion of the collapse is isolated in both time and area of the building affected.
It can't get any clearer. You'll get a pass on your next post:
In the NIST 3-stage explanation of the descent of the top 18 stories, they appear to state that the building exhibited freefall and that those 18 stories took longer to fall than 3.9 seconds.
... because you had not had this explained to you yet. However, it has been now, so you should recognize your error and compose future posts accordingly.
The building did not "exhibit" free fall. Only part of it did. And only for a short period of time.
So to answer your question:
So, what I'm trying to discern here is---was this gross incompetence, or willful obfuscation of the later acknowledged truth?
Cheers,
Kurt
No, NIST never beat their wife to begin with.