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William Seger

(11,729 posts)
43. No 47-story building has ever been CD'ed, by any method
Fri Aug 8, 2014, 09:00 AM
Aug 2014

The tallest steel-framed building ever demolished with explosives was the 28-story J.L.Hudson Department Store in Detroit (and actually, only a small part of it was that tall). Watch this video and then try again to tell me how WTC7 was anything like this:



Even though this building was considerably shorter than WTC7, it was a major technical challenge:

Double column rows installed in the structure between vertical construction phases, internal brick shear walls, x-bracing, 70 elevators and 10 stairwells created an extremely stiff frame. Columns weighing over 500 lb/ft, having up to 7.25 inch thick laminated steel flanges and 6 inch thick webs, defied commercially available shaped charge technology. CDI analyzed each column, determined the actual load it carried and then used cutting torches to scarf-off steel plates in order to use smaller shaped charges to cut the remaining steel. CDI wanted to keep the charges as small as possible to reduce air over pressure that could break windows in adjacent properties.

http://www.controlled-demolition.com/jl-hudson-department-store

It's fair enough to say that it's theoretically possible to demolish a 47-story building with either explosives or thermite even though neither has ever been done (and even though there it's never been demonstrated that cutting a heavy column with thermite is actually possible). However, it's intellectually irresponsible to fail to consider what either would entail, and to simply imagine that either could be done in secret, in an occupied office building, in such a way that it would look like exactly like a progressive collapse caused by loss of structural integrity.

The NIST hypothesis was formulated through quantitative, physics-based analysis by dozens of structural mechanics experts, most of whom were from private industry. The CD hypothesis was concocted using imaginary physics by people who apparently don't know anything at all about structural mechanics. The NIST hypothesis does a credible job of explaining ALL the evidence, whereas the CD hypotheses falls completely apart if all the evidence is considered. When asked to justify and substantiaate such a ludicrously implausible hypothesis as CD, the best "truthers" can do is to say, "If it looks like a CD, then it must be a CD," while ignoring that the premise is not sound and that the logical inference is not valid. "Truthers" expect people to ignore that and instead just count how many signatures Richard Gage has garnered with his disingenuous presentations.

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North Tower Exploding... [View all] wildbilln864 Aug 2014 OP
Exploding? zappaman Aug 2014 #1
Do you know of a building gyroscope Aug 2014 #3
Do you know of a building William Seger Aug 2014 #36
From what I read gyroscope Aug 2014 #39
what? superbeachnut Aug 2014 #40
Really? gyroscope Aug 2014 #41
No 47-story building has ever been CD'ed, by any method William Seger Aug 2014 #43
The NIST findings can not be trusted cuz...BUSH! zappaman Aug 2014 #44
Cool story bro gyroscope Aug 2014 #45
911 truth lies and says little fires, 911 truth fails on fire superbeachnut Aug 2014 #46
It might collapse? lol gyroscope Aug 2014 #47
"minor office fire" cpwm17 Aug 2014 #48
Once again gyroscope Aug 2014 #49
Now you are back-tracking cpwm17 Aug 2014 #50
Whoops. zappaman Aug 2014 #51
Uhh...where's the collapse? gyroscope Aug 2014 #52
Watch the video. A large section of the building collapsed from the fire alone. n/t cpwm17 Aug 2014 #53
Its still standing gyroscope Aug 2014 #54
If you refuse to watch the video, I can't help you. n/t cpwm17 Aug 2014 #55
Watching the video zappaman Aug 2014 #56
That's true cpwm17 Aug 2014 #57
And yet the building still stands gyroscope Aug 2014 #58
All wrong of course FBaggins Aug 2014 #60
You should do a little studying! zappaman Aug 2014 #61
I don't think so gyroscope Aug 2014 #62
several stories? wildbilln864 Aug 2014 #75
Here's another view and a before picture cpwm17 Aug 2014 #74
was this building sabbat hunter Aug 2014 #93
Wow William Seger Aug 2014 #59
But, but, but, I thought you CT'ers IronGate Aug 2014 #2
wrong again! wildbilln864 Aug 2014 #4
Ok. IronGate Aug 2014 #5
here, educate yourself! wildbilln864 Aug 2014 #6
Of course it free fell, with the help of all the floors above where the planes hit. IronGate Aug 2014 #7
more nonsense from... wildbilln864 Aug 2014 #8
Ok. IronGate Aug 2014 #9
Speed and rate of collapse gyroscope Aug 2014 #10
It was meant to look like the planes caused the collapses but it failed! wildbilln864 Aug 2014 #11
Interesting theory gyroscope Aug 2014 #12
.... IronGate Aug 2014 #34
'It was meant to look like the planes caused the collapses but it failed!" zappaman Aug 2014 #25
Now the Pennsylvania plane was possibly shot down? IronGate Aug 2014 #33
If you think that the speed of collapse is too fast... AZCat Aug 2014 #13
Duration would be zero seconds gyroscope Aug 2014 #14
Have you done any calculations to check your claims? AZCat Aug 2014 #15
For every action...an equal and opposite reaction gyroscope Aug 2014 #16
The resistance doesn't apply quite in the way you seem to think. AZCat Aug 2014 #17
Neglected gravity? gyroscope Aug 2014 #18
I was referring to your claim about "equal and opposite reactions". AZCat Aug 2014 #19
That's not just my 'claim' gyroscope Aug 2014 #20
I'm quite familiar with it. AZCat Aug 2014 #21
Asking for a real world example gyroscope Aug 2014 #22
No, that's not a strawman. AZCat Aug 2014 #23
And you consider yourself gyroscope Aug 2014 #26
you'll be waiting quite a while! n/t wildbilln864 Aug 2014 #29
Yup gyroscope Aug 2014 #63
Again you fail to understand some fundamentals of physics and engineering. AZCat Aug 2014 #76
Here on DU I'm an anonymous internet poster, just like the rest of us. AZCat Aug 2014 #35
Yes you are mistaken gyroscope Aug 2014 #38
Yep, that's the same description where you made the errors. AZCat Aug 2014 #42
I'm still waiting for you to identify your obvious, elementary errors. AZCat Aug 2014 #78
"I'm not the one, however, making mistakes about fundamental physics concepts." Yes you are! wildbilln864 Aug 2014 #65
Thankfully Bill I am well aware of fundamental physics concepts. AZCat Aug 2014 #77
well you believe that I'm sure. wildbilln864 Aug 2014 #79
I understand we will continue to disagree. AZCat Aug 2014 #80
oh man thats a hoot! wildbilln864 Aug 2014 #82
Again with the same mistake. AZCat Aug 2014 #83
well let's see. there's your "calculations".... wildbilln864 Aug 2014 #84
That's not the mistake I pointed out. AZCat Aug 2014 #85
over two thousand that are on record. wildbilln864 Aug 2014 #87
There are over 2 million engineers in the US zappaman Aug 2014 #88
how many of those registered architects... wildbilln864 Aug 2014 #91
How many scientists have vocally endorsed gravity? zappaman Aug 2014 #92
why so few superbeachnut Aug 2014 #89
It doesn't matter how many you have if their arguments are not valid. AZCat Aug 2014 #90
And if you're counting engineers like "missing jolt" Szamboti in that number... AZCat Aug 2014 #86
the symmetry claim means you don't understand what symmetry is superbeachnut Aug 2014 #81
I thought the towers fell into their own footprints? cpwm17 Aug 2014 #24
you thought? wildbilln864 Aug 2014 #30
Obviously you didn't understand my obvious sarcasm cpwm17 Aug 2014 #31
but I did! n/t wildbilln864 Aug 2014 #32
fantasy silent explosives destroy the WTC, 911 truth fails for 13 years superbeachnut Aug 2014 #27
The camera was half a mile away gyroscope Aug 2014 #28
Excuses from 911 truth for spreading lies, and now the Gish Gallop comes superbeachnut Aug 2014 #37
Why, oh why WovenGems Aug 2014 #64
It was definitely a conspiracy! wildbilln864 Aug 2014 #66
Data WovenGems Aug 2014 #67
You tell me gyroscope Aug 2014 #69
BS, Operations Northwoods, never done superbeachnut Aug 2014 #70
Wrong gyroscope Aug 2014 #71
It is proof our government stops silly plans - oops superbeachnut Aug 2014 #72
19, give or take a few. n/t wildbilln864 Aug 2014 #73
It was a conspiracy by 19 terrorists superbeachnut Aug 2014 #68
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