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Debris from the collapsing North Tower breached a fuel oil pipe in a room in the north side of the building. (This means the debris had to travel across WTC 6 and Vesey Street, -- a distance of at least 355 feet -- penetrate the outer wall of WTC 6, and smash through about 50 feet of the building, including a concrete masonry wall.)
The extant fires raised the temperature of the spilled fuel oil to the 140 degrees F required for it to ignite.
The sprinkler system malfunctioned and failed to extinguish the fire.
Originally posted by Djarums
Please search earlier threads for conversation relating to this building as it has been covered numerous times.
Originally posted by Satyr
I hate it when people suggest using that crippled search engine. Even if you find a thread with the terms you're looking for, clicking it won't take you to the page with relevant info. It'll only go to page one.
Originally posted by Vertu
Several floors of the WTC buildings were reconstructed using the original materials from the rubble, ignited with kerosine inside, and the structure was stressed to immitate the forces of a high rise building's loads. The structure was proven to withstand the fire and it didn't buckle at all. The perimeter columns, which were believed to be responsible for the collapse didn't even heat up to any critical degree.
Originally posted by elevatedone
really.... where did you hear this ? It's the first I've heard of it.. .