Jeffrey Orling
Senior Member
They are welded to the web and the flange, so they stiffen both.
OK... but how does that prevent or influence walk off? Perhaps web crippling...
They are welded to the web and the flange, so they stiffen both.
Actually 5.5" as per NISTs original estimate, where they failed to read correctly from the bill of materials that the seat plate was actually 1ft. Still, i suppose they did kind of address this, even though this dug a bigger hole for their story.
Fair comment though.
The fuel oil thing was abandoned after a while. There were only small holding tanks for the fuel above the basement, and these would have non return valves fitted. I have the drawings for these somewhere.Maybe and maybe not. I can't do the match but I would not be confident that a girder which lost half it bearing area would not do some weird things... walking might not be one of them. I don't know the engineering here and I find the entire column 79 thing bizarre and so TTF makes more sense. I am confounded why NIST didn't propose TTF or something similar? The only reason I can think is that the accelerant would not be files and furniture but diesel. And that would lead to a discussion of why the diesel was there and who designed the system and chose to place this next to the transfer trusses... And this is opening up a can of worms.
The fuel oil thing was abandoned after a while. There were only small holding tanks for the fuel above the basement, and these would have non return valves fitted. I have the drawings for these somewhere.
As for the stiffeners, I put this video together to explain their relevance a while back, it may help. I don't want to get way off topic, but this can be a bit of a confusing subject when initially encountered. Good on you for at least looking into it thus far.
As I have stated I find the column 79 explanation a real stretch of the imagination. I don't by it and they don't explain as far as I know how the girder walk off or "disappearance" from the bearing plate... would fail column 79?
Let's keep on topic please. The AE911 letter.small? they were several hundred gallons and were replenished automatically from the big ones. Is that where the missing 12,000 gallons may have gone?
The non return valves though. Maybe we could deal with that in another thread, but fuel lines just wouldn't work like that. Even NIST abandoned the idea that fuel oil played a part in the collapse.small? they were several hundred gallons and were replenished automatically from the big ones. Is that where the missing 12,000 gallons may have gone?
NIST say it initiated a general collapse of the floor system, leading to loss of lateral support to C79. It's all in the report.
The claim here in this letter is that the presence of these omitted elements makes the initiating event impossible, hence the entire report needs to be redone.
It's interesting, because NIST's simulations don't actually rely on this as the initiating event (there were lots of girder failures, and this was not a significant one), so it's unclear when they chose to use it in parts of the report, and their presentations. My feeling is that they just picked it as an example, and it somehow became the focus. I think that if this letter prompts anything, it might just be NIST saying: "yeah, maybe that was a bad example, but the overall hypothesis of connection failures from thermal expansion leading to progressive collapse of floor system is still reasonable, even if we don't know exactly what connections failed".
Maybe they chose it because the initial outward sign of the east penthouse collapsing? This is directly above the column 79 area.That's more likely... because I don't think it was 79's girder that started the ball rolling. But way odd that they chose this location..
Maybe they chose it because the initial outward sign of the east penthouse collapsing? This is directly above the column 79 area.
NISTs animations? Here's an example of their animations. The girder in question has been highlighted. Are you seriously saying that this is realistic? Whatever it is, it is not a finite element analysis.It's interesting, because NIST's simulations don't actually rely on this as the initiating event (there were lots of girder failures, and this was not a significant one)
No I can't, neither can you, and neither have NIST.You can demonstrate it's plausible
Maybe they chose it because the initial outward sign of the east penthouse collapsing? This is directly above the column 79 area.
NISTs animations? Here's an example of their animations. The girder in question has been highlighted. Are you seriously saying that this is realistic? Whatever it is, it is not a finite element analysis.
NISTs animations? Here's an example of their animations. The girder in question has been highlighted. Are you seriously saying that this is realistic? Whatever it is, it is not a finite element analysis.
There were I recall 14 columns below the east penthouse... whatever the number it was more than 1. Clearly column 79 was like the 4 big corner core columns of the twins. However it should be noted that one of those was severed in 2WTC and it did not lead to the IMMEDIATE collapse of the what has above it and spread to the rest of the core.
The more interesting scenarios to explain the EPH and the the WPH drop would be something to do with TT#1 or columns E3 and or E4.
It is unrealistic in any and every sense that it could be. Look at the girder flapping around like a ribbon in the wind. Also, there is a beam to the west of it that i like to call the 'seagull'. It actually flaps its wings and flies. This is a cartoon, nothing more, and NIST claimed it was a finite element analysis. Pure fantasyI believe we have discussed this before. But that video does illustrate that the walk-off of the girder in question (the green one) is not an initiating event in this particular simulation. You might criticise the fidelity and resolution of the simulation, but that's rather another topic.
Because it is indeed nothing like the actual collapse. Well spotted. That a federal agency who are meant to be the cream of the crop when it comes to engineering can put this out shows the weakness of the case they had to try and make.Funny that their simulation of their model looks nothing like the actual collapse. How so?
It is unrealistic in any and every sense that it could be. Look at the girder flapping around like a ribbon in the wind. Also, there is a beam to the west of it that i like to call the 'seagull'. It actually flaps its wings and flies. This is a cartoon, nothing more, and NIST claimed it was a finite element analysis. Pure fantasy
No, I don't see a need to. We chose to concentrate on some very pertinent and particular issues. If we included every problem that there is with NISTs report, it would detract from the most salient points that NIST should be made to focus on, in an environment where they can be compelled to answer, rather than stonewalling.And did you note this in your letter? Sounds like a pretty major criticism.
Do you think that the flaws in the NIST report and the potential flaws in the design of the building are urgent public concerns?No, I don't see a need to. We chose to concentrate on some very pertinent and particular issues. If we included every problem that there is with NISTs report, it would detract from the most salient points that NIST should be made to focus on, in an environment where they can be compelled to answer, rather than stonewalling.
Do you think that the flaws in the NIST report and the potential flaws in the design of the building are urgent public concerns?
Is public safety in jeopardy in other steel buildings?
That would be your best approach, IMO. By inserting a CD narrative into the discussion you've virtually guaranteed that most people in the system won't listen to you - basically it's the equivalent of putting on a tinfoil hat before attending the meeting.
I think Jeffrey's nailed it: whatever legitimate points you have are far overshadowed by the generally unreasonable positions your group is taking. The main talking points of AE911Truth are so hysterical and paranoid that they should be an embarrassment to you.
I've produced many slides and post them on numerous internet 911 sites and get no response... I find that odd to say the least. And that includes this one. Yet all I hear... is show me the formulas! The math. Are these guys serious? They need formulas to know what they are seeing with their eyes if they open them... and do a modicum of thinking?
No I don't want or need to debunk the junk of AE911T or NIST... both have been more than adequately debunked by others much smarter than me for years. Debunkery is not solving the problem.
We try to deal with debunking specific claims of evidence here Jeffrey. Those generally need facts and figure, and occasionally formulas.
You personal theory about design inadequacies seems rather general. If you want to debunk something that NIST said, or something AE911 or anyone else said, then that's fine. But just postulating a broad alternative theory is not appropriate for this forum.
Why can't you allow new ideas?
In this forum site any idea that differs from an officially released document must automatically be debunked. No exceptions. But only one tiny detail at once. Under no circumstances must a wider view be allowed to be discussed. Your refreshing dismantling of the official version of the towers initiation, of truss sag, to be replaced by the glaringly obvious core drop is a step too far in here. As is your observation that a single column in WTC7 cannot buckle and cause a symmetrical collapse.
The difference in approach is that the letter to the Inspector General possibly represents the first real chance to get the NIST reports to be seen for what they are. There is a strong element of 'Emperor's clothes' at play. Too many building professionals are capable of praising the Emperor on his style because others do that. They refuse to see the obvious. People like gerry and yourself are able to see clearer and say so. As in the fable, others are later capable of seeing clearer when the peer pressure is eased by more exposure. The letter to the Inspector General may just do that.
My point to Mick is he is limiting the site to debunkery which is self defeating in the end. We need to EXPLAIN not debunk.
There is nothing symmetrical about the collapse of these buildings. They essentially fell straight down with expected but not predictable anomalies or motion... and that how big complex things fall down...
Most people describe 'straight down' as symmetrical. If you question people most will admit that they expected the tops of the towers to fall over to one side. And if WTC7 was to fall it would do that in a random manner. They expected 'not symmetrically' and got 'symmetrical. Sorry if my word jars with you but that is what is used mostly to describe what people see.
It's not a limit, it's a focus.
This isn't a site about 9/11. It's a site about debunking.
Most people describe 'straight down' as symmetrical. If you question people most will admit that they expected the tops of the towers to fall over to one side. And if WTC7 was to fall it would do that in a random manner. They expected 'not symmetrically' and got 'symmetrical. Sorry if my word jars with you but that is what is used mostly to describe what people see.
Not really - if bunk is exposed for bunk then there are less places those seeking an alternative 9-11 explanation can go to if they any respect for rationality, leaving them more likely to go to the real non-bunk issues such as what you're trying to highlight.It's limiting even it is your deal...
Jeffrey, I think there is room for your analysis here; I would suggest a thread debunking some of the NIST theories, for example. Not to put too fine a point on it but your commentary is not always positive, so I don't see how it would affect you all that much. Just sayin'If I am prevented from presenting my thinking about the technical issues of 9/11 perhaps yes. I am interesting in PROactive positive thinking not negative (debunkery). This is the sort of nonsense David Griffin thinks he's good at - gotcha stuff. Why can't you allow new ideas?