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Creative Speculation
In reply to the discussion: Explosions Before The Collapse of WTC 7 [View all]gyroscope
(1,443 posts)56. For a total collapse to be plausible
the fire and resulting deflections would have to occur at the base of the building, as the photo you posted depicts.
Because the entire weight of the building rests on the steal beams at the base, so in this scenario it is somewhat plausible the building could conceivably come down completely from the combination of intense fire and the weight of 110 stories causing the steel at the base to deflect and fail. (But even in this best case scenario, the Cardington tests say the towers would not collapse).
However the fire took place near the top of the towers not the bottom. Making it absolutely inconceivable and not plausible at all, that such a fire way at the top would cause the whole entire structure to collapse and freefall upon itself.
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I never say never - especially if an external force exceeds the design specs...nt
jonno99
Sep 2016
#3
Seriously? Buildings with steel beams fail too often in India and Bangaladesh.
marble falls
Sep 2016
#6
Yep..the B-25 crash into the Empire State Building in 1945 was their design motivation.
sdfernando
Jun 2017
#27
It did. BOTH towers fell, slighly biased in the direction from which they were hit.
AtheistCrusader
Jun 2017
#23
Are you an engineer, or just look stuff up on the internrt to troll people?
captain queeg
Mar 2017
#20
Post counts are so meaningful when you're given accurate, source-able information in response
AtheistCrusader
Jun 2017
#26
Madrid Tower fire. All the upper floors are framed in steel and they collapse two hours into the
AtheistCrusader
Jun 2017
#41
OKC: Progressive collapse caused by massive explosions at the base of the building
gyroscope
Jun 2017
#48
WTC7 straddled the con-edison substation. Have you ever heard an electrical transformer blow?
AtheistCrusader
Jun 2017
#61
Your first sentence is true. However, it bears no relation to the WTC impacts/fires.
AtheistCrusader
Jun 2017
#62
The mass sitting above the fire on the South Tower was equal to the Yamato.
AtheistCrusader
Jun 2017
#59