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Thanks for the tip RFBurns.
Originally posted by RFBurns
You dont have to save it to enlarge it. Simply hold down the Ctrl key and then use your wheel on the mouse to zoom in or out.
Originally posted by stealthyaroura
On the roof of the building to the right is that a CCTV camera? come to think of it can any of you spot any surveillance equipment on that photo that would cover the shot of the "object" that did or did not hit the pentagon?
Originally posted by jam321
I think this video is very interesting.
They test crashed a plane into a 12 foot thick concrete wall.
If somebody can embed this I would appreciate it.
Length: 63 ft 0 in (19.2 m)
Wingspan: 38 ft 4.5 in (11.7 m)
Height: 16 ft 6 in (5.0 m)
Wing area: 530.0 ft² (49.2 m²)
Airfoil: NACA 0006.4-64 root, NACA 0003-64 tip
Empty weight: 30,328 lb (13,757 kg)
Loaded weight: 41,500 lb (18,825 kg)
Max takeoff weight: 61,795 lb (28,030 kg)
Powerplant: 2× General Electric J79-GE-17A axial compressor turbojets, 17,845 lbf (79.4 kN) each
Zero-lift drag coefficient: 0.0224
Drag area: 11.87 ft² (1.10 m²)
Aspect ratio: 2.77
Fuel capacity: 1,994 US gal (7,549 L) internal, 3,335 US gal (12,627 L) with three external tanks
Maximum landing weight: 36,831 lb (16,706 kg)
Originally posted by Achorwrath
Walls of the pentagon were limestone not poured reinforced concrete designed to winthstand a nuclear blast.
The Pentagon was built of cast-in-place reinforced concrete, and the floors consisted of a slab, beam, and girder system supported by ingenious spiral-steel-reinforced columns. The columns have both spiral and long-run steel reinforcement, while the beams only have long-run reinforcement. Because of WWII steel shortages, reinforced concrete was used instead of steel in most of the building’s structure.6 (See Appendix for more Pentagon maps and construction details.)
The Pentagon Renovation Project
In 1993, the Clinton administration decided to upgrade the Pentagon, due in part to the growing concern over terrorist attacks. Upgrades included heavy duty fireproofing in the walls, thus reinforced the walls, and improved its general security. The renovation strategy called for dividing the work into five “wedges”, each wedge is a corner and a rectangle of the building (each covers 1.2 million square feet). The first wedge renovated was the one facing west (Wedge 1).
Pentagon the same day. Among the design requirements, Somervell required the structural design to accommodate floor loads of up to 150 pounds per square feet, which was done in case the building became a records storage facility at some point in the future, after World War II. A minimal amount of steel was used in construction, which was in short supply during World War II. Instead, the Pentagon was built as a reinforced concrete structure, using 680,000 tons of sand, dredged from the Potomac River, and a lagoon was created beneath the Pentagon's river entrance. To minimize steel, concrete ramps were built rather than install elevators. Indiana limestone was used for the building's facade
The Pentagon’s designers minimized or avoided using critical war materials whenever possible. They substituted concrete ramps for passenger elevators and used concrete drainpipes rather than metal. They eliminated bronze doors, copper ornaments, and metal toilet partitions, and avoided any unnecessary ornamentation