Slideshow image

Since your web browser does not support JavaScript, here is a non-JavaScript version of the image slideshow:

slideshow image

slideshow image

slideshow image

slideshow image

slideshow image

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

Gordon Ross: Bazant and NIST, Simultaneous Failures

Gordon Ross: Bazant and NIST, Simultaneous Failures

The paper can be linked below

Criticism of the Paper

Gordon Ross correctly identifies some exaggerated over-simplifications in the Bazant, Zhao (BZ) paper.

Gordon criticizes BZ in two key ways. The first is quoted below:

"Dr. Bazant argues that all of the potential energy associated with the fall of the upper
section of the tower through two storey heights [the storey where the failure occurred and
the uppermost storey in the lower section] would be concentrated into the destruction of
the uppermost storey of the lower section. This energy would overwhelm the ability of
the columns of the uppermost storey to absorb energy and collapse would progress
through this storey. The available energy would then be concentrated into the next storey
down and the tower would collapse one storey at a time to ground level."

Gordon asks how this can be because

"It must be noted that the columns in the upper section could not deliver
a greater force than they themselves were able to transmit. In a situation where the
columns in the upper section were asked to deliver loads at magnitudes sufficient to cause plastic deformation of columns in the lower section, then they themselves would
simultaneously suffer plastic deformation at levels proportionate to their ability and
applied loads."

Good point.

Gordon's second complaint is quoted below:

"The second error made by Dr. Bazant is his failure to take account of the factor of safety
designed into the towers' construction. He makes no mention whatsoever of this crucial
design parameter. This failure leads to a major underestimation of the ability of the
columns to resist the downward acting forces.

The effect of this error by Dr. Bazant is an error in his ratio of energies. If this is adjusted
to take account of a factor of safety of 4 the ratio is reduced from his value of 8.4 to 2.1.
It must also be noted that the ratio mentioned by Dr. Bazant is relevant only to the first
collision after a freefall of one storey. He is specifically dealing with a situation where
the energy of the fall through two storeys is resisted by the columns of one storey. The
continuation of the collapse would not have these conditions but rather have the fall of
one storey resisted by the columns of one storey. Without the period of uncontested
freefall the ratio of energies would be reduced for the remaining duration of the collapse
from Dr. Bazant's figure of 8.4 to 1.05."

Created on 02/18/2009 10:33 PM by admin
Updated on 02/18/2009 10:54 PM by admin
 Printable Version

Copyright © 2008 WiredTech, LLC
phpWebSite is licensed under the GNU LGPL