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-Caveat Lector- Grot wrote: No, the construction is post-and-beam. There are strong posts but between them only
flimsy material(bricks, facade stone, and windows)--the "building" was not strong.
The original hole details match up with the photo and diagram I showed you of
what was behind the windows and facade stone. A couple of pieces of steel remain
in the hole.
Read witness accounts on desmoulins' site at links I gave, you will..what about the floor of the second level
find one account of the floor up there cracking and being displaced
vertically along an expansion joint. It fell down later.
Again, look through desmoulin's site and you will see two engine-- given the low hanging engines
compressor parts, a compressor wheel and a ring with holes in it.
One engine is as good as two. Then the witness accounts fill in for
you, it was an American Airlines Boeing 757 with Rolls Royce
turbofan engines.
.........Having ruled out whatzits/missile/fighter by listening to witnesses who saw>And why should the building collapse after the fires in that part of the wedge are out -->and came down over portions where the plane did not hit, given the 55 degree angle hit>at the entry point?
the Boeing 757 pass within feet of them, at VDOT traffic center, Sheraton Hotel,
and apartment on Courthouse Road next to Columbia Pike, then find engine
and other parts in photos. We can wonder if there were script-fulfilment
demolitions at the crash site but we do not find evidence of such like
at OKCbomb Murrah, police radio transcripts from OKC and witness
accounts of mercury fulminate cannisters with military olive drab
containers carried out of the building and photos showing damage
beyond undamaged area(proof cutter charges placed behind undamaged
area to cut posts and beams).
>Don't bury us with this architecture and history trivia unless you are going to do something with it.
Looking at the trees, ignoring the forest? Killing the messenger, ignoring
specifics, recycling the same old dead-end non sequitur diversions? The wall
was weak so a shaped charge or DU penetrator was not necessary, only the mass
of fuel in the belly tank was needed to punch a hole. There are American Airlines
Boeing 757 parts strewn around. Many witnesses saw a Boeing 757. It was a
Boeing 757, whether guided by hijackers or computer, whether augmented by
script-fulfilment demolitions on site or not.
-Bob
----- Original Message -----From: BobSent: Friday, July 16, 2004 1:20 PMSubject: [cia-drugs] Pentagon wall laughably flimsy 911"The facade stones, 5 feet long, 2 feet wide and half-a-foot thick, each
weighed about 600 pounds." Standing on edge like dominos, push and
they tip over.
"the Pentagon[wall] was constructed with a thin limestone facade
over a brick infill...non-structural brick infill walls"!!! "Merely
replacing existing windows with blast-resistant ones anchored to
the existing brick infill would not be a workable solution. The newer
WINDOWS would direct blast pressures to the window support
connections at the [non-structural brick] infill [wall]. The tensile and
shear loads [on window glass!] would overwhelm the existing brick
infill walls"!!!!!!!!! The mass of kerosene in the plane belly tank
punched through that brick infill and removed two blast windows,
whether the windows actually cracked or not.
The only pre-911 reinforcement of the wall, not the windows, was
to put a butterfly net behind the brick to catch 911 denialists, whatzits,
imaginary DU penetrators and cruise missiles with shaped charges, and
pieces of blast debris from "a reasonably forceful blast from any close
point along the Pentagon's surrounding network of public roads"--"mesh
geotextile material, normally used to stabilize highway embankments,
to arrest wall debris loosed by a blast".
If I can stop laughing, I should point also point out that some holes
deeper into the Pentagon were made for fire and rescue and cleanup
crews, as shown by dotted lines and instructions spray-painted on
those walls at sites where holes were made, and visible in photos.
http://pentagon.batcave.net/_webimages/entry2.JPG "punch out"
http://pentagon.batcave.net/_webimages/squareopening.jpg pre-existing door
-Bob
http://www.prosoco.com/Story.asp?ID=15
"The facade stones, 5 feet long, 2 feet wide and half-a-foot thick, each
weighed about 600 pounds."
http://members.fortunecity.com/911/pentagon/pentagon-retrofit.htm
http://www.sitbot.net/im/penta_wall.jpg
The scars from the Oklahoma City bombing are still fresh in the minds of
government officials six years later when assessing the physical security of
likely targets for terrorist attacks. The potential for attacks against the U.S.
government was made even more immediate with the bombing of the USS
Cole in Yemen last October and the killing of 17 of its sailors and the wounding
iof 39 others. With this escalation in terrorism came the desire to develop a
reasonable protective shield for the nation's foremost symbol of military strength,
the Pentagon. The need to reduce the building's vulnerability to a terrorist attack
was high on the list of renovation priorities for the sixty-year old headquarters of
the Department of Defense.
"When the Pentagon was designed and built in the early 1940s," reflected Walter
Lee Evey, director of the Pentagon Renovation Program Office, "there were a
number of concessions made to a country at war. The original designers exercised
economies in construction to lessen the impact on strategic materials needed to equip
the military." The extensive use of reinforced concrete and non-reinforced masonry
was one concession. Certainly the threat of any kind of terrorist attack on the building
was far from the thoughts of the original designers. As a result, the Pentagon was
constructed with a thin limestone facade over a brick infill between reinforced concrete
floors, structurally supported by a reinforced concrete beam and column frame. Enough
to protect from the elements but not from the potential forces of significant blast events.
Architecturally, the designers of the huge office building also opted for the extensive use
of windows. This feature helped connect workers with the outside world, and further reduced
the demand for critical wartime construction materials. Along each 924' (281.6 m) exterior
wall, there are approximately 400 windows, roughly 5' wide by 7' tall (1.8m × 2.1 m).
Together, the lightly constructed facade and large number of windows offer little resistance
to terrorist attack.
A reasonably forceful blast from any close point along the Pentagon's surrounding network
of public roads would create broad personnel risk inside the outermost of the building's five
concentric office rings and could cause severe property and structural damage as well.
Merely replacing existing windows with blast-resistant ones anchored to the existing brick
nfill would not be a workable solution. The newer windows would direct blast pressures to the window support connections at the infill. The tensile and shear loads would overwhelm the existing infill walls.
The idea of supporting the brick infill walls with a reinforced concrete wall "backing" was rejected as a "typical" approach because of the Pentagon's extensive fenestration (although this design was accepted for "blank" wall panels with no window openings).
Another proposal suggested dropping a continuous, structural tube through roof openings behind the walls and through the floor slabs. Grouting the floor slabs around the tubes would allow the tubes to transfer explosive loads horizontally into the slabs. This idea was rejected, primarily because of the building's structural irregularities. The Pentagon's windowless fifth floor, a late-construction addition, has a large, thick capstone running along the bottom third of the brick wall. This unusual, non-structural feature extends 17 inches (432 mm) into the interior from the wall. A design where the tube penetrates the stone would be costly as well as difficult to construct. Another irregularity is the second floor spandrel beam, which is located under the other spandrels and protrudes several inches beyond the wall into tenant space. The vertical tube would have to bypass this feature, too. To compensate for these irregular features and achieve effective structural protection, large spacers would have to be added to the continuous tube on every floor. This factor made the approach too costly.
Belying its regular-looking, geometric appearance, the Pentagon has a number of as built dimensional and structural irregularities. Many of these were never documented during construction and were only discovered during renovation. These unknowns forced HSMM to pursue a general solution that would be cost-effective and feasible for every floor and wall section.
The resulting general design solution called for erecting structural reinforcements around the windows, anchoring at the top and bottom to structural concrete floor slabs and not the non-structural brick infill walls. This general solution also accepts blast forces from the walls themselves and transfers both window and wall loads into the horizontal slab diaphragms.
http://www.sitbot.net/im/penta_win_tubes.jpg
http://www.sitbot.net/im/pentagon_hole.jpg
Please let us stay on topic and be civil.-Home Page- www.cia-drugs.org
OM
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Let us please be civil and as always, Caveat Lector. ======================================================================== Archives Available at:
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