9/11 #126: #noplanes ftw

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Project Summary

This is a study of the collapse of the 47-story World Trade Center Building 7 (WTC7) at 5:20 P.M. on September 11, 2001.

The objective of the study was threefold: (1) Examine the structural response of WTC 7 to fire loads that may have occurred on September 11, 2001; (2) Rule out scenarios that could not have caused the observed collapse; and (3) Identify types of failures and their locations that may have caused the total collapse to occur as observed.

The UAF research team utilized three approaches for examining the structural response of WTC 7 to the conditions that may have occurred on September 11, 2001. First, we simulated the local structural response to fire loading that may have occurred below Floor 13, where most of the fires in WTC 7 are reported to have occurred. Second, we supplemented our own simulation by examining the collapse initiation hypothesis developed by the National Institute of Standards and Technology (NIST). Third, we simulated a number of scenarios within the overall structural system in order to determine what types of local failures and their locations may have caused the total collapse to occur as observed.

The principal conclusion of our study is that fire did not cause the collapse of WTC 7 on 9/11, contrary to the conclusions of NIST and private engineering firms that studied the collapse. The secondary conclusion of our study is that the collapse of WTC 7 was a global failure involving the near-simultaneous failure of every column in the building.


The research team is currently organizing and uploading all of its data into a format that can be readily downloaded and used. We expect to post the data sometime between September 16 and September 30, 2019.

There will be a two-month public comment period from September 3 to November 1, 2019, with the final report will be released later this year. During this period, we welcome any and all members of the public to submit constructive comments intended to further the analyses and presentation of findings contained in the report.

http://ine.uaf.edu/wtc7

Figure 4.16 Hypothetical Failure of Columns 76 to 81 โ€” UAF WTC 7 Draft Report

Figure 4.20 Hypothetical Simultaneous Failure of All Core Columns โ€” UAF WTC 7 Draft Report

Figure 4.24a Near-Simultaneous Failure of All Columns Persp. 1 โ€” UAF WTC 7 Draft Report

Figure 4.24a Video of WTC 7 Collapse, Perspective 1 โ€” UAF WTC 7 Draft Report

Figure 4.24b Video of WTC 7 Collapse, Perspective 2 โ€” UAF WTC 7 Draft Report

NIST WTC7 Models

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1.Columns 79, 80, and 81 did not fail at the lower floors of the building. Instead, they needed to have failed at the upper floors of the building all the way to the penthouse. Yet there were no documented fires above Floor 30. Therefore, fire did not cause the collapse of Columns 79, 80, and 81 nor the collapse of the east penthouse. 2.The hypothetical failure of Columns 79, 80, and 81 -- the three easternmost core columns -- would not trigger a horizontal progression of core column failures. Therefore, the hypotheses of NIST, Arup/Nordenson, and Weidlinger that the buckling of Column 79 would trigger a progressive collapse of the entire building are invalid, and the collapse of Columns 79, 80, and 81 high in the building was a separate and distinct event. 3.Even if we assume the failure of Columns 79, 80, and 81 could lead to the failure of the next row of core columns, the hypothetical failure of Columns 76 to 81 would overload the exterior columns around the southeast corner of the building, rather than overloading the next row of core columns to the west, which would result in the building tipping to the southeast and not in a straight-down collapse. 4.The hypothetical simultaneous failure of all core columns would cause the building to tip to the southwest and would not cause a straight-down collapse. 5.The simultaneous failure of all core columns over 8 stories followed 1.3 seconds later by the simultaneous failure of all exterior columns over 8 stories produces almost exactly the behavior observed in videos of the collapse. The collapse could have started at various floors starting at Floor 16 and below and produced the same behavior.It is our conclusion that the collapse of WTC 7 was a global failure involving the near-simultaneous failure of all columns in the building and not a progressive collapse involving the sequential failure of columns throughout the building. Despite simulating a number of hypothetical scenarios, we were unable to identify any progressive sequence of failures that could have taken place on September 11, 2001, and caused 112a total collapse of the building, let alone the observed straight-down collapse with approximately 2.5 seconds of free fall and minimal differential movement of the exterior.

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Science, Truth, and Justice 18 Years Later: September 2019 Schedule of Events

In the first week of September, AE911Truth will participate in releasing the draft report of the groundbreaking World Trade Center Building 7 Study by researchers at the University of Alaska Fairbanks (UAF).

The release of this report will include a livestreamed presentation by the study’s principal investigator, Dr. Leroy Hulsey, at UAF’s Schaible Auditorium on September 3, 2019, followed by a second presentation from Dr. Hulsey at the UC Berkeley Faculty Club on September 5, 2019. The draft report will be published that same week at http://ine.uaf.edu/wtc7 — as well as at AE911Truth.org — and will be open for public comment for a two-month period ending November 1, 2019.

Then it’s onward to our events in New York and Washington, D.C. On September 7, 2019, AE911Truth founder Richard Gage will speak at an event hosted by the Lawyers’ Committee for 9/11 Inquiry at the All Souls Church in New York City. Gage will be joined by 9/11 family member Bob McIlvaine, Franklin Square Fire Commissioner Christopher Gioia, NSA whistleblower William Binney, media critic Mark Crispin Miller, members of the Lawyers’ Committee for 9/11 Inquiry, and other invited speakers.

Four days later, on September 11, 2019, AE911Truth will hold a livestreamed news conference at the National Press Club, featuring Franklin Square Fire Commissioners Christopher Gioia and Joseph Torregrossa as well as Bob and Helen McIlvaine (parents of 9/11 victim Bobby McIlvaine), Lawyers’ Committee for 9/11 Inquiry President David Meiswinkle, and Mr. Gage.

After the news conference, we will head to Capitol Hill for meetings with several U.S. representatives and their staffs. We will also deliver to every member of Congress a packet containing a letter from the Franklin Square fire commissioners, our educational materials, and a copy of the Bobby McIlvaine World Trade Center Investigation Act.

Please join us online or in person for this series of significant events and political action activities. Help is especially needed at the U.S. Capitol delivering our materials to all 535 members of Congress in one afternoon!

We look forward to seeing you and making this 9/11 anniversary a major turning point in the pursuit of truth and justice.

Schedule of Events

A Structural Reevaluation of the Collapse of World Trade Center 7 (Fairbanks) A Presentation by Civil Engineering Professor J. Leroy Hulsey, Ph.D., P.E.

September 3, 2019 6:00 PM Alaska Time / 10:00 PM Eastern Schaible Auditorium University of Alaska Fairbanks

Livestream: https://media.uaf.edu/

https://www.ae911truth.org/images/PDFs/UAF-Event-Poster.pdf

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A Presentation by Civil Engineering Professor J. Leroy Hulsey, Ph.D., P.E.

September 5, 2019 5:00 PM Pacific The Faculty Club at UC Berkeley *Seating priority given to UC Berkeley students and faculty as well as AE911Truth petition signers.

https://www.ae911truth.org/images/PDFs/Berkeley-UAF-poster.pdf

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Op woensdag 4 september 2019 15:19 schreef DeMolay het volgende:
Finite elements method

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Op woensdag 4 september 2019 15:29 schreef DeMolay het volgende:
Ja , bij hoog water zitten vele geo-enginears in nederland met dit programma te stoeien om dijk scenario's na te rekenen...en ja ook gebruikt bij de toren van Pisa

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Op woensdag 4 september 2019 22:46 schreef Tingo het volgende:

[..]

Helaas is 't totaal tijdverspillende BS - zelfde verhaal als die van 9/11 half truth van 10 jaar of zo terug. Sorry.

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Newly Released FBI Docs Shed Light on Apparent Mossad Foreknowledge of 9/11 Attacks
May 17th, 2019

New information released by the FBI has brought fresh scrutiny to the possibility that the “Dancing Israelis,” at least two of whom were known Mossad operatives, had prior knowledge of the attacks on the World Trade Center.

https://www.mintpressnews(...)9-11-attacks/258581/