Posted:
#326
Claim:
Many Pentagon windows remained in one piece—even those just above the
point of impact from the Boeing 757 passenger plane.
Pentagonstrike.co.uk, an online animation widely circulated in the
United States and Europe, claims that photographs showing "intact
windows" directly above the crash site prove "a missile" or "a craft
much smaller than a 757" struck the Pentagon.
FACT: Some windows near the impact area did indeed survive the crash. But that's what the windows were supposed to do—they're blast-resistant.
"A blast-resistant window must be designed to resist a force significantly higher than a hurricane that's hitting instantaneously," says Ken Hays, executive vice president of Masonry Arts, the Bessemer, Ala., company that designed, manufactured and installed the Pentagon windows. Some were knocked out of the walls by the crash and the outer ring's later collapse. "They were not designed to receive wracking seismic force," Hays notes. "They were designed to take in inward pressure from a blast event, which apparently they did: [Before the collapse] the blinds were still stacked neatly behind the window glass."
FACT: Some windows near the impact area did indeed survive the crash. But that's what the windows were supposed to do—they're blast-resistant.
"A blast-resistant window must be designed to resist a force significantly higher than a hurricane that's hitting instantaneously," says Ken Hays, executive vice president of Masonry Arts, the Bessemer, Ala., company that designed, manufactured and installed the Pentagon windows. Some were knocked out of the walls by the crash and the outer ring's later collapse. "They were not designed to receive wracking seismic force," Hays notes. "They were designed to take in inward pressure from a blast event, which apparently they did: [Before the collapse] the blinds were still stacked neatly behind the window glass."
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