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the-pre-collapse-inward-bowing-of-wtc2.t4760/
www.metabunk.org...
9/11 and the Science
of Controlled Demolitions
www.skeptic.com...
3WHAT ABOUT THE ALMOST FREE-FALL COLLAPSE OF THE TWIN TOWERS? The key is the “almost” modifier. If I told you I was making almost $100,000 and you found out I was making only $67,000, you’d say I was exaggerating. So stop exaggerating the collapse speed of the WTC Towers! The 80,000 tons of structural steel slowed down the collapses of the Twin Towers to about ⅔ (two-thirds) of free-fall.3 And the core collapsed at about 40% of free-fall speed, coming down last.4 According to Richard Gage: “To bring a building symmetrically down, what we have to do is remove the core columns.” But on 9/11 the stronger core columns came down last, which violates this supposed most fundamental rule of controlled demolition.
Failure of Welded Floor Truss Connections from the Exterior Wall during Collapse of the World Trade Center Towers
app.aws.org...
Summary
Analysis of the connections supporting the composite floor system of the WTC towers showed that at and below the im- pact floors, the greater majority (above 90%) of the floor truss connections were either bent downward or completely re- moved from the exterior column. This was probably related to the overloading of the floors below the impact region after col- lapse initiation.
originally posted by: username74
a reply to: neutronflux
bull# lol
originally posted by: username74
a reply to: neutronflux
www.youtube.com...
you... dont have enough physics for this fight!
Again, authentic documents are not going to valid false scenarios like WTC planted pyrotechnics, WTC thermite, WTC nukes, WTC energy weapons, or a missile hitting the pentagon.
Failure of Welded Floor Truss Connections from the Exterior Wall during Collapse of the World Trade Center Towers
app.aws.org...
Summary
Analysis of the connections supporting the composite floor system of the WTC towers showed that at and below the im- pact floors, the greater majority (above 90%) of the floor truss connections were either bent downward or completely re- moved from the exterior column. This was probably related to the overloading of the floors below the impact region after col- lapse initiation. Depending upon weld joint geometry, detachment of the main load-bearing seats was a result of either fracture in the heat affected zone of the base material (standoff plate detached from spandrel) or through the weld metal (seat angle detached from standoff plate). Failure in both cases was assumed to be a result of a shear mechanism as a result of overloading from floors above impacting those below. There did not appear to be a significant change in distribution of failure modes of the floor truss connections when comparing those connections inside vs. outside of the impact region or those ex- posed to pre-collapse fires and those that were not.
Characterization of Submerged Arc Welds from the World Trade Center Towers: As- Deposited Welds and Failures Associated with Impact Damage of the Exterior Columns
files.aws.org...
Summary
Analysis of intact submerged arc welds from the exterior columns of the WTC tow- ers indicated that appropriate welding pro- cedures and joining materials were used during construction. Further, the failure mode of the joints as a result of the aircraft impact was expected. Splitting of the exte- rior columns into the four individual plates occurred by fracture through the HAZ as this region had a lower cross-sectional area than the weld throat. Additionally, the heat of welding likely degraded the mechanical properties (ductility, hardness) of the mate- rial in the HAZ resulting in the crack prop- agating solely within this feature. Based upon the localized ductility of the fracture and the lack of web plate thinning, failure of the welds absorbed very little of the energy of aircraft impact.
originally posted by: kwakakev
a reply to: neutronflux
You do a great job getting people to ask questions and research for themselves. This thread is not about what may of happened, but what you expect to happen should the Dark Overload or someone like that release what they have.
the-9-11-papers-from-the-dark-overlord.t10334/
By: benthamitemetric
www.metabunk.org...
www.metabunk.org...
As an attorney myself, I find the sheer volume and scope of these litigations to be reason enough to believe that there is no truth to the inside job/controlled demolition conspiracy theories, even if you put all the other (ample) countrary evidence aside.
The is no seismic, video, audio evidence pyrotechnics were used in WTC 7
Dr. Judy Wood - 9/11 Seismic Data
911 Empirical Evidence2,063 views
m.youtube.com...
A Morning That Shook the World: The Seismology of 9/11
blogs.ei.columbia.edu...
Over succeeding weeks, Kim and his colleagues worked with federal investigators, the New York Fire Department, the Port Authority and others to provide seismic records that could be combined with photos, videos and eyewitness reports. Their first product, coauthored by 12 Lamont seismologists and grad students, was a November 2001 paper published by the American Geophysical Union describing the waves generated by the attacks, their potential effects, and the precise timing of each event.
A CRITICAL ANALYSIS OF THE COLLAPSE OF WTC TOWERS 1, 2 & 7 FROM AN EXPLOSIVES AND CONVENTIONAL DEMOLITION INDUSTRY VIEWPOINT
By Brent Blanchard
August 8, 2006
c-2006 www.implosionworld.com
www.implosionworld.com...
blogs.scientificamerican.com...