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Originally posted by Swampfox
You mention WTC7 and yet do not know that FDNY was saying all afternoon that 7 was going to fall because of the damage it had and that they were not going to attempt to enter and fight the fires?
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Other than initiating the fires in WTC 7, the damage from the debris from WTC 1 had little effect on initiating the collapse of WTC 7. The building withstood debris impact damage that resulted in seven exterior columns being severed and subsequently withstood fires involving typical office combustibles on several floors for almost seven hours.
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Even without the structural damage, WTC 7 would have collapsed from fires having the same characteristics as those experienced on September 11, 2001.
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As early as 11:30 a.m., FDNY found that there was no water supplied by the hydrant system to fight the fires that were visible. With the collapse of the towers fresh in their minds, there was concern that WTC 7 too might collapse, risking the lives of additional firefighters. Within the next two hours, serious discussions were underway regarding the cessation of any efforts to save WTC 7, and the final order to cease was given at about 2:30 p.m.
Originally posted by deadline527
In my opinion, if a structure is LEANING before hand, it does NOT collapse straight down. It would fall to whatever side its leaning to.
Page 39/130
Even without the structural damage, WTC 7 would have collapsed from fires having the same characteristics as those experienced on September 11, 2001.
Originally posted by scraze
Notice the lack of kerosine in WTC 7..
Q. “I wonder what was burning in there. What do you think was burning. There’s not a lot of wood in there.”
A. “You figure, that jet fuel, that explosion that hit, everything just came out. Remember that explosion? It was massive, that fireball. That jet fuel just—“
Q. “It was jet fuel, yeah. That must have been where it landed. That’s probably where a lot of the jet fuel went.”
A. “A 25,000 gallon tank I think it had?”
Q. “It had to go somewhere.”
Originally posted by scraze
reply to post by tezzajw
Whoops, didn't get that far yet. Yeah, Cassidy seems to say the fire was mainly caused by kerosine, even:
Q. “I wonder what was burning in there. What do you think was burning. There’s not a lot of wood in there.”
A. “You figure, that jet fuel, that explosion that hit, everything just came out. Remember that explosion? It was massive, that fireball. That jet fuel just—“
Q. “It was jet fuel, yeah. That must have been where it landed. That’s probably where a lot of the jet fuel went.”
A. “A 25,000 gallon tank I think it had?”
Q. “It had to go somewhere.”
I wonder though.. How much kerosine can escape an exploding fireball? The explanation is that the explosion 'launched' the kerosine into WTC 7.. How likely is such a thing?
Not only does the kerosine have to accelerate faster than the expansion of the fireball (which would require a shockwave pushing the kerosine outwards - possible, but the kerosine itself should be a source of the shockwave?) - but it would also have to 'collect' in WTC 7 to burn for several extra hours. When you watch the footage of the fireball, it does not seem like there is kerosine splashing around. Maybe some fuel got to escape it's explosion (sounds weird), but if so many ended up in WTC 7, it's bound to be on tape? Just a hypothesis..
posted by uncommon-sense
WTC7 had fuel storage onsite, a 6,000 gallon tank low in the building as well as some smaller ones underground. There were concerns about the safety of this prior to installing them.
The major concern at that time was number Seven, building number Seven, which had taken a big hit from the north tower. When it fell, it ripped steel out from between the third and sixth floors across the facade on Vesey Street. We were concerned that the fires on several floors and the missing steel would result in the building collapsing. –FDNY Chief Frank Fellini
A few minutes after that a police officer came up to me and told me that the façade in front of Seven World Trade Center was gone and they thought there was an imminent collapse of Seven World Trade Center. –FDNY Lieutenant William Melarango graphics8.nytimes.com...
6. So we go there and on the north and east side of 7 it didn’t look like there was any damage at all, but then you looked on the south side of 7 there had to be a hole 20 stories tall in the building, with fire on several floors. Debris was falling down on the building and it didn’t look good. But they had a hose line operating. Like I said, it was hitting the sidewalk across the street, but eventually they pulled back too.
So we gathered up rollups and most of us had masks at that time. We headed toward 7. And just around we were about a hundred yards away and Butch Brandeis came running up. He said forget it, nobody’s going into 7, there’s creaking, there are noises coming out of there, so we just stopped. And probably about 10 minutes after that, Visconti, he was on West Street, and I guess he had another report of further damage either in some basements and things like that, so Visconti said nobody goes into 7, so that was the final thing and that was abandoned.
Capt. Chris Boyle /e7bzp
12. At this point, 7, which is right there on Vesey, the whole corner of the building was missing. I was thinking to myself we are in a bad place, because it was the corner facing us. –Fred Marsilla, FDNY
Hayden: Yeah. There was enough there and we were marking off. There were a lot of damaged apparatus there that were covered. We tried to get searches in those areas. By now, this is going on into the afternoon, and we were concerned about additional collapse, not only of the Marriott, because there was a good portion of the Marriott still standing, but also we were pretty sure that 7 World Trade Center would collapse. Early on, we saw a bulge in the southwest corner between floors 10 and 13, and we had put a transit on that and we were pretty sure she was going to collapse. You actually could see there was a visible bulge, it ran up about three floors. It came down about 5 o’clock in the afternoon, but by about 2 o’clock in the afternoon we realized this thing was going to collapse.
Heavy, thick smoke rises near 7 World Trade Center. Smoke is visible from the upper floors of the 47-story building. Firefighters using transits to determine whether there was any movement in the structure were surprised to discover that is was moving. The area was evacuated and the building collapsed later in the afternoon of Sept. 11.
WTC 7 - was it leaning all afternoon and going to collapse - or is it just an urban myth?
Other than initiating the fires in WTC 7
the damage from the debris from WTC 1 had little effect on initiating the collapse of WTC 7.
Cassidy seemed to believe that some of the jet fuel, from WTC 2, managed to find its way into WTC 7.
Originally posted by thedman
Quotes from FDNY personnel on scene
Noises coming out of WTC 7, debris falling, visible bulge at SW corner,
building beginning to move and shift
As a personal note - was at seminar 6 months after 9/11 and heard
Chief Hayden describe operations at WTC 7 that day. The use of the
transit to check for building stability and fact that building was starting to
shift several hours before collapse.