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Originally posted by psikeyhackr
I supplied a Python program with source code that computed the collapse time under impossibly magical conditions. If the masses were equal the minimum collapse time was 12 seconds. Under bottom heavy conditions it's 14 seconds. Dr Sunder of the NIST told NPR that the north tower came down in 11 seconds.
Originally posted by exponent
Originally posted by psikeyhackr
I supplied a Python program with source code that computed the collapse time under impossibly magical conditions. If the masses were equal the minimum collapse time was 12 seconds. Under bottom heavy conditions it's 14 seconds. Dr Sunder of the NIST told NPR that the north tower came down in 11 seconds.
Could I have a copy of your python program please? I'd like to see if it is inaccurate in any way.
Thanks.
Originally posted by exponent
Originally posted by psikeyhackr
On Gregory Urich's website I told him where his data contradicts a magazine article from 1970, Engineering Record News, I think it is called. Urich took the total weight of the perimeter wall panels and did a linear interpolation from the 9th floor to the top of the building. But Urich is saying that the panels at the 9th floor were 19 tons. The article says the heaviest panels were 22 tons. But if you try to do a linear interpolation with 22 tons at the bottom the weight of the panels at the top must be less than zero which is impossible.
So you are arguing about a difference of 3 tons per panel? The floors you're talking about weigh something like 4000 tons in total, you're dismissing evidence over a potential difference of about 1%, far below the uncertainty of many other variables.
Surely you can see how that is a ridiculous accuracy goal? To have numbers accurate to within 1% for a building built in the 70s, significantly modified and then destroyed over a decade ago? It's just silly.
Originally posted by exponent
Originally posted by Wonderer2012
I'm not an engineer or scientist, but I will say from the video is this-
85% of the structure was solid and undamaged, the top 15% gave way at the point of the plane's impact and came down.
The time of free fall from the top of the WTC is roughly 10 seconds. The building came down in just over 11 seconds.
Your numbers aren't too bad, it's actually closer to 8.5-9.5 seconds for free fall, and about 11-13 seconds for the collapse. Obviously it's obscured by dust so it's very hard to tell.
ARE WE SURELY TO BELIEVE THAT OVER 100 FLOORS OF SOLID STEEL STRUCTURE AND CONCRETE GAVE WAY AT THIS RATE?
The point is you don't have to be an engineer to understand that over 100 floors of solid steel and concrete would offer a lot more resistance than it did. It is unnatural.
Actually you do have to be an engineer to understand the buildings. That is after all the whole point of the degree and qualification lol! If you didn't need specialist knowledge to do this, then there's been a really big scam going on for a lot of years :p
Seriously though, go through the numbers you gave me. The actual acceleration of both collapses was around 2/3rds and 3/4g respectively. That means that a huge amount of energy was absorbed in resistance. Bear in mind that 2/3g means that the lower section slowed the acceleration by 1/3g, which is a pretty substantial amount. It is also inline with the theoretical evidence produced by structural engineers.
I don't doubt that it looks strange and impossible, but once you understand how the building was constructed, and why it was so dependent upon the outer walls, it becomes obvious.
Is there any evidence that would convince you or at least interest you that you might not have the right idea on this topic? I can definitely run through the numbers with you if you'd like.
Originally posted by exponent
If you didn't need specialist knowledge to do this, then there's been a really big scam going on for a lot of years :p
Originally posted by jlm912
reply to post by psikeyhackr
I see what you've meant by "elementary physics" OS'ers have a good bit of excuses to come up with if your explanations really came to light.
On the weight of the panels, you say the guy estimated 19 tons, while the article put it at 22, but with the interpolation, if I was reading correctly, you were basically saying that had to be mistaken as well, no?
The largest contract for fabrication of structural steel is held by Pacific Car and Foundry Co., of Seattle. It is $21.79 million for 55,000 tons of steel for the towers' bearing wall panels from the ninth floor up.
In all there are 5,828 of these panels, each about 10 ft wide, 36 ft high, with the heaviest individual panel weighing about 22 tons. Each panel consists of three box columns, 14 in. square, made up of plate up to 3 in. thick and, connected by 54-in, deep spandrels.
When the panels are delivered to the site, Koch lifts them off the trucks and raises them to their proper locations with one of eight Australian climbing cranes the company purchased especially for the job. (PNYA recently bought the cranes from Koch to simplify their use by other trades when they are not needed for steel erection.)
Succeeding panels are bolted together by means of high-strength bolts installed through handholes in the box columns, which are accessible from inside the building. Gusset plates and high-strength bolts connect adjacent spandrels, and these connections are also made from within the building.
Originally posted by jlm912
reply to post by psikeyhackr
Excuse my trying to wrap my ignorant head around the concept here, but so you're saying that the article is truer to the the weight, and while at 22 tons, linear interpolation wasn't the "key" as Urich used it to narrow the weight down more accurately?
reply to post by scully222
Well I can explain how they were taken out of the way, which ones were and roughly when and there's good evidence to show that this is the case. On the other hand you can't tell me which columns, when, where, and the only evidence is a similar look and the idea that mention of explosions = explosives. I don't really mean to be having a go at you here, so please don't take it personally. I'm just saying that from my perspective there's a lot of posting of suspicious items, but very little resolving into actual evidence, and it's hard to be convinced by it.
reply to post by exponent
It's the truth isn't it? That no matter what I could provide you, you're going to fall back on wanting something that doesn't exist and likely will never exist?
Originally posted by kidtwist
You can also see they have cut the beams almost flat, and some have a very slight angle, but no severe 45 degree angles like in the classic photo where you can see one steel column that has strange residue on it (possible some kind of incendiary).
In that same classic photo, the columns arent lined up like they are in the video, it's isoloated on it's own and hasn't been touched yet. The guys doing the cutting were as you say using acetylene torches, and you can see in the video using those torches leaves no residue.
Seems strange people had to get a lawsuit out on NIST to get most of the videos, pictures & data (because they did not respond to a FOIA request initially) , and even then they were reluctant & took a long time releasing everything. Even when they did release the evidence they based their reports on, they only released bits at a time, and a lot was edited. Seems like they were buying time for some reason, and it's strange they did not comply easily?
Originally posted by maxella1
Here's one. Maybe I should have used “debunkers” instead of “buddies”
And we are finding out details of a cover up all the time you just ignore them. There is enough information to suspect foul play by the government, we need to investigate It. How do you know what else they are covering up?
No. this is an example of a President lying to the Congress. The bottom line is that they lie about almost everything they do. Why should anybody believe them about 9/11 if they got caught lying about prior knowledge, and they got caught destroying classified documents ?
My point was that you dismissed the FBI report based on another victims family members testimony.
Originally posted by psikeyhackr
breakfornews.com...
The program operates on a fixed time base to make the code simple. The error should be less than 2%. Making the timebase smaller should increase accuracy. But the entire concept is magical since no supports must be destroyed during the collapse process so it is only slowed down by the Conservation of Momentum.
psik
Originally posted by jlm912
3 out of 22 is more than a 10% difference of error. In regards to the total weight, you're essentially saying the outer structure was 10% of the gross weight, exponent? How confident are you in that inference?
Also, when you're talking in terms of tons multiplied by potentially thousands, even a 1% difference can be pretty substantial. Which piece straw breaks the camel's back? Which pound within what eventual ton makes the difference between crushing the lower structure or not?
And most importantly, was the proverbial straw factually present in regards to the collapses? These are questions that need to be answered before arguing percentage of error in simulations.
Originally posted by jlm912
Originally posted by exponent
If you didn't need specialist knowledge to do this, then there's been a really big scam going on for a lot of years :p
Yep, it's called "accreditation."
...
One big scam, alright... and that's just the basics.
Originally posted by scully222
You keep referring back to a theory and claiming it as truth and evidence. Telling me which columns when and where is 100% based on the best working theory offered by the so-called experts.
There is zero solid evidence to back up this theory only findings that could be seen as consistent with this theory. There is exactly as much solid evidence for controlled demolition as there is for the pancake theory, which is none.
The only difference is the pancake theory is more accepted. Acceptance is not evidence. Most people thought the earth was flat long ago, but acceptance did not make it true. The only evidence we have is 3 destroyed buildings and a lot of questions.
Originally posted by exponent
Originally posted by psikeyhackr
breakfornews.com...
The program operates on a fixed time base to make the code simple. The error should be less than 2%. Making the timebase smaller should increase accuracy. But the entire concept is magical since no supports must be destroyed during the collapse process so it is only slowed down by the Conservation of Momentum.
psik
This is awful code psik, and it's entirely incomplete. The version you have posted there is not runnable, and now I look at some other code you've written, it isn't even finished.
Why are you even using timesteps? It's a key indicator that you don't have any clue what you are doing.
At the tone the Time will be: 0.85
At the tone the Time will be: 0.86
At the tone the Time will be: 0.87
Collision at 1139.9448 feet!!!
Mass @: 1140.1664 ft. hit Mass @: 1140.0 ft. at: 0.87 sec.
1130.0 tons traveling: 27.52 ft/sec hit 1140.0 tons moving at: 0.0 ft/sec
New mass is: 2270.0 tons moving: 13.6993832599 ft/sec
At the tone the Time will be: 0.88
At the tone the Time will be: 0.89
At the tone the Time will be: 1.4
At the tone the Time will be: 1.41
Collision at 1127.94076652 feet!!!
Mass @: 1128.18972687 ft. hit Mass @: 1128.0 ft. at: 1.41 sec.
2270.0 tons traveling: 30.6593832599 ft/sec hit 1150.0 tons moving at: 0.0 ft/sec
New mass is: 3420.0 tons moving: 20.3499415205 ft/sec
At the tone the Time will be: 1.42
At the tone the Time will be: 1.43
At the tone the Time will be: 1.58
At the tone the Time will be: 1.59
Collision at 1123.65488852 feet!!!
Mass @: 1124.0576 ft. hit Mass @: 1123.75937705 ft. at: 1.59 sec.
1120.0 tons traveling: 50.56 ft/sec hit 3420.0 tons moving at: 26.1099415205 ft/sec
New mass is: 4540.0 tons moving: 32.1416740088 ft/sec
At the tone the Time will be: 1.6
At the tone the Time will be: 1.61
At the tone the Time will be: 1.62
=============================================
At the tone the Time will be: 12.63
At the tone the Time will be: 12.64
Collision at 35.4236623499 feet!!!
Mass @: 36.30826723 ft. hit Mass @: 36.0 ft. at: 12.64 sec.
161650.0 tons traveling: 145.934253016 ft/sec hit 2060.0 tons moving at: 0.0 ft/sec
New mass is: 163710.0 tons moving: 144.097929265 ft/sec
At the tone the Time will be: 12.65
At the tone the Time will be: 12.71
At the tone the Time will be: 12.72
Collision at 23.8967140043 feet!!!
Mass @: 25.2584073013 ft. hit Mass @: 24.0 ft. at: 12.72 sec.
163710.0 tons traveling: 146.337929265 ft/sec hit 2070.0 tons moving at: 0.0 ft/sec
New mass is: 165780.0 tons moving: 144.510691278 ft/sec
At the tone the Time will be: 12.73
At the tone the Time will be: 12.74
At the tone the Time will be: 12.8
At the tone the Time will be: 12.81
Collision at 11.3805758947 feet!!!
Mass @: 12.2334587021 ft. hit Mass @: 12.0 ft. at: 12.81 sec.
165780.0 tons traveling: 147.070691278 ft/sec hit 2080.0 tons moving at: 0.0 ft/sec
New mass is: 167860.0 tons moving: 145.248297391 ft/sec
At the tone the Time will be: 12.82
At the tone the Time will be: 12.88
At the tone the Time will be: 12.89
Mass: # 108 hit the ground. 167860.0 tons at: 147.488297391 ft/sec
At the tone the Time will be: 12.9