First, one major thing to make clear - I have not said it was controlled demolit demolition. It's hard to keep so many mouth shut if you want to set up so huge explosive plan.
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About "soft metal" issue. Here is letter from Kevin Ryan.
Code:
We know that the steel components were certified to [b]ASTM E119[/b]. The time temperature curves for this standard require the samples to be exposed to temperatures around 2000F for several hours. And as we all agree, the steel applied met those specifications.
However the summary of the new NIST report seems to ignore your findings, as it suggests that these low temperatures caused exposed bits of the building?s steel core to "soften and buckle." Additionally this summary states that the perimeter columns softened, yet your findings make clear that "most perimeter panels (157 of 160) saw no temperature above 250C." To soften steel for the purposes of forging, normally temperatures need to be above 1100C. However, this new summary report suggests that much lower temperatures were able to not only soften the steel in a matter of minutes, but lead to rapid structural collapse.
It's estimated that regural steel will lose around 40% of it's strength in such a fire over a at least 2h time. Now...even if they used regural steel and towers would burn more than 2h, there would still be 60% of strenght in hottest places. Towers should be still standing firmly without any problems.
About 80% of outher structure was 100% ok without any damage at all. Many inner colums didn't see so high temperatures etc. So even if you completly remove some inner colums...nothing will happen.
It's alot like standing on a coke can - it can hold your weight as long as the force is equally distributed, but flick the side with your finger and the can collapses.
Yes, true. Now add inner structure in coke can and there is now way that you can compress is town in 90 degree angle. It will fall in one side - the side you will move your weight. WTC add 7 collapsed directly down - unrealistlic because there was still lot of 100% ok structure down what would have forced upper damaged floors do move in some direction. And that would lead to collaps in that side.
You ask about the powder: there were hundreds of thousands of tonns of drywall in both buildings and the concrete in the central core, combined with furniture, papers and office supplies.
Yes, but still...there was way to much powder, including tiny-tiny pieces of furniture, carpets, PC's etc. If you smash something, you can't get so tiny pieces. For example take hydraulic press. They test concret strenght and they get only quite huge pieces. yes, sure, if we think about falling speed, forces etc, you will get powder...but no way so much.
I don't know where you are getting your numbers about the amount of time it took the towers to fall once the progressive collapse started, but there is resistance there, both from the air and the lower floors. Also it wasn't 10 seconds, you have to measure the time from the impact and start of the fire, not from the start of the collapse.
If we are talking about collapsing time, we don't need to measure fire time or any other reasons. Start counting when upper floor starts to move and stop counting when it's all "powder". Why didn't lower structures slow down collapsing speed? Check 35:30 in this
video. This ain't best video about time issue, but I'm to lazy to find better one what I watched.
zenkidori said:
I like when retards who have no clue about anything to do with demolitions or engineering form opinions on technical matters.
Yes, I don't have doctor degree ot something about demolitions or engineering. But hell yeah I have clue how things work.
zenkidori said:
peter3hg2 said:
Well he did actually say he works with steel in his job.
So? I know quite a few immigrants that work with steel and can't do basic algebra.
I have born in land where I live and work. Don't make it personal. And btw, I hate racist.
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Blind_Io said:
Sorry but I had to post this:
To our good friend from Estonia, EU who works with steel - the chief exports of Estonia are: oil shale, peat, phosphorite, clay, limestone, sand, dolomite, arable land, sea mud.
You guys export dirt and mud! What are you going to do when you run out of country to sell off? :lol:
Haha, good OT point. Could you gime me link where you get this info? I haven't never hear of that there is mud or sand export
And what is "arable land"? My dictionary says it's field (where you can grow vegetable etc. How you can sell it? :shock:
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One more thing - both towers had around 100,000 tons of steel...what has found after collaps are all relatively small pieces. Not long and bended what they should be.
Why towers collaps when this one didn't? This tower burn almost 24h with temperatures high as 1472 degrees. Look at this damage...it's huge. Almost all outher structure is gone. And tower is still standing. And WTC collapsed just with 1h long fire?
http://davesweb.cnchost.com/nwsltr69c.html
Why dozens of peole hear explosions before towers collapsed? If bit less than 3000 people were dead due to collaps, why there is so few body parts etc stuff found? And how they can tell us by name those terrorist who hijack planes? Why didn't the famous Oklahoma building collaps after HUGE explosion and massiv damage?
What to watch -
http://video.google.com/videoplay?docid=-5946593973848835726&q=Loose+Change
What to read -
http://www.loosechange911.com/wtc.htm
Ok, I'm now off...time to handle present problems like eating and reading other forums.