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Why Fact-check? Why preserve a visual record?

The Website Written as a Book
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

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
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: 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

Log In


Remember Me

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

Perimeter Sections Easily Detached

Perimeter Sections Easily Detached

Perimeter columns were seen to fall to the earth very differently depending on from which region they were located.

3 distinct regions are:

REGION 1 is > floor 97
REGION 2 is between floors 92 to 97
REGION 3 is < floor 92

FROM REGION 2, pieces often very large and visible (up to 5 stories high, up to 25 columns wide) were seen to become quickly detached from the building and go into freefall. These falling pieces lead the collapse front and leave an almost continuous trail of dust that serves to obscure the rest of the collapse from view. The largest pieces are not noticably crushed, buckled or deformed.

This behavior sharply contrasts with the perimeter panels from region 3 (below floor 92) Region 3 perimeter sections are seen to slowly "peel" outwards from the building in very large sections.

"Peeling" means the top of a long perimeter sheet is seen to move away from the building but not in freefall. It does not follow a trajectory of freefall because it's bottom portion is still firmly attached to the building structure.

The arrows in the graphic below show the trajectories of 5 of the largest perimeter sections that fell from region 2 (between floors 97 and 92).

In the following photo we can see the large piece from the NE corner, floors 92 to 97 (on the left) in freefall.

Before discussing this and other large pieces in more detail, note that we can also see a smaller 2 column section leading the fall on the right. This section leads all other objects in the fall by such a wide margin that it won't even be visible in most all the photos shown below.

This smaller piece came from region 2, between floors 92 and 97, and is an excellent indication of what the speed of freefall actually is in WTC1.


A close-up of this section is shown below.

In the next photo we can see 2 large sections in freefall: The NE corner section (on the left) shown before and a very large section from the west perimeter on the right.

A couple of things to note:

The NE corner piece seems severed along a straight line on the bottom even though perimeter column sections are installed staggered for strength.

Both these extremely large sections are about 5 floors tall.

There is a third extremely large section in the above photo that is not yet visible: The section is falling from the north (left) face but you cannot see it because it has not yet emerged from the dust.

There is a small piece of the perimeter still attached to the building and firmly in place near the top of the photo (outlined in pink). The top of this piece marks floor 97.

A close-up of the NE corner piece is shown below.

Where was this NE corner piece originally located within WTC1?

The location is outlined in pink below.

The same piece is located within the rectangle on the left in the N face projection below.

the photo below was taken fron the north. It shows large pieces falling from the east face.

THey show all the characteristics of the other large pieces from the 92 to 97th floor:

1) They are sections about 5 stories in height.

2) They lead all other objects in the fall.

3) They leave a heavy trail of dust, effectively obscuring the view of the rest of the collapse.

The photo below is from the NW. We can see the huge perimeter section falling from the west face and a smaller section (most probably from the same area) just beside it.

We also, for the first time, see the huge N face perimeter section just begin to emerge from the dust.

Of all the large sections from between floors 92 to 97, the huge N perimeter section is the hardest to see. It distinctly emerges from the dust only after it is concealed by WTC7 in most videos.

Within the last few days I have seen a video which clearly shows this perimeter section from the N face. It is very large, intact and unbuckled. I'm working on extracting useful images from the video and I'll post them here in a short time.

Once again, note that perimeter sections behave very differently depending on which region they are from.

Region 2, from floors 92 to 97, is discussed in this section. They are the earliest objects to become detached from WTC1, lead the fall on all visible sides of WTC1 and are unique in that...

1) They are all about 5 stories tall

2) They show no evidence of buckling or noticable deformations

3) Each one leads all other local falling objects in their descent.

4) They all trail a thick dust which obscures the collapse from view.

If you retrace where these objects originally came from, you will be able to effectively reconstitute the entire 92 to 97 floor perimeter region on the west, north and the bulk of the east side with these pieces.

You will find they fit together like pieces in a puzzle.

Created on 05/18/2008 12:24 AM by admin
Updated on 02/27/2009 03:13 AM by admin
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