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Why Fact-check? Why preserve a visual record?

The Website Written as a Book
Introduction
1: Science and Subjective Viewpoints
2: Toward Accurate Collapse Histories
....2.1: Progressive Floor Collapses in the WTC Towers
....2.2: General Global Characteristics of Collapses
....2.3: Mathematical Basis of ROOSD Propagation
....2.4: WTC1 Accurate Collapse History
....2.5: WTC2 Accurate Collapse History
....2.6: WTC7 Accurate Collapse History
3: WTC Collapse Misrepresentations
....3.1: Purpose of the NIST Reports
....3.2: NIST WTC1 Misrepresentations
....3.3: NIST WTC7 Misrepresentations
....3.4: NIST WTC2 Misrepresentations
....3.5: Reviewing the Purpose of NIST and FEMA Reports
....3.6: Bazant Misrepresentation of Collapse Progressions
....3.7: Block Misrepresentations of Collapse Progressions
....3.8: AE911T Misrepresentations of the Collapses
4: Scientific Institutions Can Be Unaware of Contradiction
5: Reassessing the Question of Demolition
....5.1: The Case of WTC1
....5.2: The Case of WTC2
....5.3: The Case of WTC7
6: WTC Collapse Records Studied as Meme Replication
....6.1: Meme Replication in Technical Literature
....6.2: Meme Replication in Mass Media
....6.3: Meme Replication in Popular Culture
....6.4: John Q Public and the WTC Collapse Records
Conclusions

WTC Twin Towers Collapse Dynamics

Official, Legal Attempts to Explain Collapses

Academic Attempts to Explain Collapses Reviewed

On the Limits of Science and Technology

WTC Video Record

WTC Photographic Record
WTC1 Attack to Collapse
WTC2 Attack to Collapse
WTC 7
.
-----PHOTO RECORD OF FIRE PROGRESSION-----
Fire Progression, WTC1 North Face
Fire Progression, WTC1 South Face
Fire Progression, WTC1 East Face
Fire Progression, WTC1 West Face
Fire Progression, WTC2 North Face
Fire Progression, WTC2 South Face
Fire Progression, WTC2 East Face
Fire Progression, WTC2 West Face
.
----DEBRIS LAYOUT AND CONDITION, BY REGION-----
Debris: WTC1 Around Footprint
Debris: WTC2 Around Footprint
Debris: From WTC1 Westward
Debris: From WTC1 Northward
Debris: From WTC2 Eastward
Debris: From WTC2 Southward
Debris: Plaza Area, Northeast Complex
Debris: Hilton Hotel, Southwest Complex
Debris: General, Unidentified Locations
Damage to Surrounding Buildings
Perimeter Column Photo Record
Perimeter Columns: Types of Damage
Core Box Columns: Types of Damage
Complete Photo Archive
Other Major 9-11 Photo Archives
The 911Dataset Project

WTC Structural Information

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Online Misrepresentations of the WTC Collapses

Forum, Blog Representations of the WTC Collapses

The Book Tested Through Experiments

Miscellaneous Notes, Resources
FAQ for Miscellaneous Notes
History Commons 9/11 Timeline
The 911Dataset Project
Skyscraper Safety Campaign
First and Largest 9/11 Conspiracy Theory
Key Words in Book and Website
Trapped Within a Narrowed False Choice
Vulnerability and Requestioning
On Memes and Memetics
Obedience, Conformity and Mental Structure
Denial, Avoidance (Taboo) and Mental Structure
Taboos Against Reviewing the Collapse Events
Extreme Situations and Mental Structure
Suggestibility, Hypnosis and Mental Structure
Awareness and Behavior
Magical, Religious, Scientific Cause-Effect Relations
The Extreme Limits of Mental Dysfunction
Orwell's "Crimestop", "Doublethink", "Blackwhite"
William James, Max Born: Science as Philosophy
Plato on Self Reflection and Mental Structure
Rewriting History, part 1
Rewriting History, part 2
On Smart Idiots

New Ideas in Education

Ejections Witnessed at 10:18

Ejections Witnessed at 10:18


The event seen from the north







Seen From the west



As mentioned at this link , all 47 core column splices are at the same elevations separated by 3 floors in the region of interest (they are not staggered). There are horizontal planes separated by 3 floors which contain all the splice connections. The floors are 89, 92, 95, 98, 101, 104. The splice locations are about 3 ft above the flooring. The splices in this region are all bolted with no welds.

Rather important because the building failed through the 98th floor at an angle of less than 1 degree. The failure angle was within 1 degree of plumb so the splice connections are the natural place to look for weakness.

The smoke ejections in the previous gif are on the 95th and 92nd floors. So, initiation on floor 98 and the smoke ejections on fls 95 and 92.

Core column bolted splices would be a natural target in the cse of demolition. They are also the main structural weakness in the case of the buildings failing naturally. Why cut columns if they are already cut and held together with only bolts and bolt plates? It is much easier to just crack the bolted splice plates and displace the columns slightly. Much less energy required.



The NIST offers the following comments on the event and nothing else:


"At 10:18:48 a.m., a pressure pulse pushed large amounts of smoke and fire out of open windows on
multiple floors and faces of WTC 1. The most dramatic effect of this pressure pulse was on the 92nd floor, where a long line of smoke appeared from open windows on the north face. Up until this time, there had been very little smoke coming through the open windows from the widespread fires burning on this floor. During the final ten minutes prior to the collapse of WTC, a large fire grew on the 92nd floor in the large open area on the west side of the north face. A large burst of fire was pushed from the area when WTC 1 collapsed. The pressure pulse at 10:18:48 a.m. also seemed to cause a fire burning in a room in the northwest corner of the 95th floor to suddenly intensify and to extend flames from north face windows."

-NCSTAR 1-5A Draft, p 290
...............


"Two pressure pulses that were large enough to force smoke and fire from open windows on multiple faces and floors were observed during the period. The first occurred at 10:18:48 a.m. and the second just seconds prior to the collapse of the tower at 10:28:22 a.m. The sources for these pressure pulses are unknown, but it seems likely that they resulted from significant structural changes within the tower."

p 280
................


"With the exception of the fires that grew on the 96th and 97th floors shortly after the aircraft impact, it has generally been observed that very little smoke and/or extended flames flowed from open windows on the north face where fires were visible. This has been interpreted to indicate that the smoke from these fires was venting elsewhere within the tower. The fact that smoke and fire continued to vent from the north face following the pressure pulse may be an indication that the internal ventilation pathways were
changed as the result of the event responsible for the pressure pulse."

p 257
...................


"At 10:18:48 a.m. an event took place within the tower that created a pressure pulse of sufficient
magnitude to force smoke out of numerous windows on the north face, as well as from the other faces. The most obvious effect of this pressure pulse was the release of a dense line of smoke along a length of the 92nd floor on the north face, extending from roughly window 94-110 to window 94-139. This smoke release was evident in numerous videos, including a number shot at great distances. Figure 8-95 compares two frames taken from a video showing the north face just prior to the smoke release and the appearance just over 4 s later. Even though the video was shot from a distance, the line of smoke that has appeared from the 92nd floor is readily apparent. It is significant that until this time very little smoke had been observed coming from the open windows on this floor, even though fires had been burning on the floor for some time. Closer inspection of this video, as well as others, shows many additional effects of the pressure pulse at other locations on the tower. Smoke and/or dust were pushed out of windows on the east side of the north face at the 94th floor. This material is responsible for the light-colored 'smoke' seen near the eastern
edge of the building immediately above the darker smoke released from the 92nd floor in Figure 8-95."

p 253
>>>>>>>>>>>>>

Kind of odd how this event can send pulses through fls 98, 95 and 92 at the same time and be seen along fl 92 on the SW corner. The reference to 94 is a slight drifting of grey smoke along the east side of the north face reflected by the sun while emerging from a shadow. It is not an ejection as the NIST claimed.





This video shows how the fires spread over the north face over time.

Note how the fires along the 92nd floor appeared and spread as a result of the structural change which occurred at 10:18 (0:57 in the video).





The pressure pulse video of the NIST Cumulus Video Database is incomplete. The beginning is missing. Nevertheless, the 92 west ejection isn't smoke but material as seen here:
http://img824.imageshack.us/img824/8789/pressurepulsedebris.gif

and it really looks like the "93 smoke" was already in the air before it reached the elevation and the sun light, as seen here:
http://img404.imageshack.us/img404/422/pressurepulsesmoke2.gif

Created on 10/15/2010 02:12 PM by admin
Updated on 05/25/2014 06:52 AM by admin
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