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Originally posted by Swampfox46_1999
Now, you might wonder why there was a 20 story hole in WTC 7......Thats because WTC 1 carved it out when it collapsed. It didnt "fall into its footprint", it collapsed and damaged several buildings around it, but WTC 7 took the brunt of it.
Originally posted by Code_Burger
There is no evidence to substantiate damage anywhere near that scale. I've seen pictures of damage, but not a hole that size.
Originally posted by bsbray11
Originally posted by HowardRoark
All columns will buckle if sufficient loads placed on them.
The loads didn't increase between impacts and collapses.
So all the junk you post about this is irrelevant in this situation.
Originally posted by bsbray11
Originally posted by HowardRoark
Thus the core walls did not have any lateral stability.
Then why did WTC1's core structure remain standing after the collapses of the trusses/perimeter columns as one can observe in the Hoboken video?
And what exactly was its collapse mechanism, since it fell straight down too? Are we to believe that the massive core columns couldn't support their own weight, and were crushed straight downwards like a soda can by the elevators and stairwells built around them?
Originally posted by HowardRoark
Show me a picture of the core standing after the collapse was complete.
That's what happened.
Originally posted by HowardRoark
Did it remain standing? no.
I rest my case.
Originally posted by HowardRoarkWithout the floors providing the nessessary rigidity, what would prevent the exterior walls from buckling?
Without floors transfering the nessessay lateral stability from the exterior walls, what would prevent the core columns from folding over?
Originally posted by HowardRoark
The load stays the same, but increasing the effective length of the column will reduce the ability of that column to support that load.
Of course the loads didn't change, but the ability of the building to support those loads did.
Originally posted by denythestatusquo
Originally posted by HowardRoarkWithout the floors providing the nessessary rigidity, what would prevent the exterior walls from buckling?
Without floors transfering the nessessay lateral stability from the exterior walls, what would prevent the core columns from folding over?
The exterior was stainless and other steels, designed to be very strong.
The core housing shafts elevators and stairs was heavy concrete Howard,
. .
The inner core of the building contained a lot of concrete which is fire resistant.
Originally posted by HowardRoark
The sagging floors will pull inward on the columns.
But even without that inward pull, the columns can still buckle on their own with no outside force on them if the loads exceed the critical buckling load.
Originally posted by HowardRoark
The exterior columns were stainless steel? What are you smoking?
Please spend some time researching this subject before you spam the board again with this nonsense.
Originally posted by denythestatusquo
Howard: the exterior as this link points out was primarily high grade steel with stainless steel used as trim especially at ground level.
"CANON 5.
g. Engineers shall not maliciously or falsely, directly or indirectly, injure the professional reputation, prospects, practice or employment of another engineer or indiscriminately criticize another's work."
Originally posted by billybob
telling testimony and text in the professor jones canon
www.911blogger.com...
Email to Prof Jones from a structural engineer in Texas:
I am surprised how few of my colleagues have expressed public disbelief at the official line which lurches from theory to theory as the shortcomings of each became apparent. I guess they have run out of ideas on Building 7.
You nailed the biggest problem when you focused on the symmetry of collapse in comparison to the asymmetry of the damage... Steel high rises are designed (and overdesigned) as cantilever beams on end. There is so much redundant steel in these buildings because they have to resist hurricane force winds. Was there a hurricane in New York on Sept 11?
If steel framed structures designed by world class engineers (who are still being commissioned to design high rises elsewhere in the world) can collapse with so little provocation, I should send my diploma back and take up fortune telling.
From another structural engineer:
• “A couple of months back I examined [Jones] claims in detail. Initially I was a bit incredulous… so I downloaded all the official reports basically expecting to find holes in the good prof's hypothesis.
• I'm a professional civil engineer with a lot of experience in the construction of major structures and I was just astounded at what I found. In my COO days if my staff had put up reports like that relating to a disaster on my patch, there is no way they would have been accepted and I would have been asking some very tough questions: The [official] reports are not at all convincing.
• That they are not is a serious worry.