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originally posted by: firerescue
a reply to: Merinda
So you are an expert on what a fire should look like ?
Fire photographer Steve Spak shoot a series of video on WTC 7 that day
Clips 1-6 show south side of WTC 7 (clips 7-11 north face) - heavy smoke can be seen pushing out of many floors
Because of heavy smoke and fact is daylight can see little visible flame
Pay attention to Clip #4 - Can hear photographer exclaiming "THAT'S WHY PULLED EVERYONE OUT OF HERE...."
www.911myths.com...
originally posted by: Merinda
originally posted by: firerescue
a reply to: Merinda
So you are an expert on what a fire should look like ?
Fire photographer Steve Spak shoot a series of video on WTC 7 that day
Clips 1-6 show south side of WTC 7 (clips 7-11 north face) - heavy smoke can be seen pushing out of many floors
Because of heavy smoke and fact is daylight can see little visible flame
Pay attention to Clip #4 - Can hear photographer exclaiming "THAT'S WHY PULLED EVERYONE OUT OF HERE...."
www.911myths.com...
A walmart is built differently from a skysvraper. And if it collapses it does not do so evenly. I am aware those are nighttime shots, but the building is burning all of it top to bottom and it did not collapses. They gave up on 7 because the fdny they did call in was burried under 2 skyscrapers.
The boot-shaped high-rise has an exterior steel framework, much of which will be stripped away and rebuilt, and a concrete interior portion that can be salvaged.
originally posted by: UnderKingsPeak
With pressure eventually someone there will sing a pretty song of justice.
Also because it's known who the order takers were at NIST, UL,
& The 9/11 commission, someone there will talk to save their own skin.
Steel beams have melted and collapsed over charred timber beam, which, despite heavy damage, remains in place." Note that the wood beam, while badly charred, retains enough structural integrity to support the deformed steel beams.
originally posted by: Insolubrious
If a single key column coming off it's seat could induce a complete failure of the entire structure especially one so big as WTC7 doesn't that break a whole bunch of safety guidelines and/or building codes?
Seismic design relies on modelling, risk analysis and changes to the structural stiffness. Wind design relies on additional structural members and wind tunnel tests. Current fire design relies on very simple, single element tests and adding insulating material to the frame. Thermal induced forces are not calculated or designed for
originally posted by: Insolubrious
If a single key column coming off it's seat could induce a complete failure of the entire structure especially one so big as WTC7 doesn't that break a whole bunch of safety guidelines and/or building codes?