Leroy Hulsey

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John Leroy Hulsey (born 1941 in the United States ) is an American civil engineer and professor at the University of Alaska Fairbanks . There he heads a department at the College of Engineering and Mines . His areas of expertise are bridge construction and the effect of extreme temperatures on building structures.

Since 2015, Hulsey has been investigating the collapse of World Trade Center 7 (WTC 7) on behalf of Architects and Engineers for 9/11 Truth (AE911Truth ). He has been claiming since November 2016 that fire as a cause of the collapse was excluded. In September 2019 the draft of a final report was published on the document server of his university, in March 2020 the final report.

education

Hulsey studied from 1965 at the Missouri School of Mines and Metallurgy , where he received a Master of Science degree in civil engineering in 1967 . From 1968 to 1971 he completed postgraduate studies at this university, renamed the University of Missouri-Rolla (now part of the University of Missouri Systems ). 1976 doctorate he there for the Ph.D. in the field of structural engineering .

Contract study on WTC 7

In 2015, AE911 commissioned Truth Hulsey to review the National Institute of Standards and Technology (NIST) investigation into WTC 7 that was carried out from 2002 to 2008 and to find other causes of collapse. According to his own statements, he received a budget of more than $ 316,000. In the project description, a three-person team (Hulsey, another doctor of civil engineering and a doctoral student) contest the NIST result, according to which, as a result of the terrorist attacks on September 11, 2001, rubble fell from the collapsing WTC 1 onto WTC 7 and triggered fires in the building collapsed after almost seven hours. According to Hulsey's team, unnamed “independent researchers” have “collected evidence” that raises “serious questions” about fire as a cause of the collapse. The structural reaction to the fires and the failure of load-bearing elements have been studied with a computer model and two simulation programs . The simulation is almost complete. The results so far rule out fire as the cause of the collapse and show that the entire core of the building failed almost simultaneously, as visually observed. Hulsey has been explaining this in public lectures since November 2016. The study was originally supposed to be completed in April 2017, then by early 2018.

In September 2017, Hulsey's team published his lecture text as a Progress report . It does not contain any footnotes or references, refers to a necessary, pending peer review and invites interested parties to participate. On March 27, 2018, Hulsey announced that unexpected issues had delayed the completion of the study. One is still in the process of studying hypothetical collapse mechanisms and simulating the building failure. The aim is to determine with a high degree of probability which sequence of failures could have caused the observed collapse and which did not. The study will not be published until the probable and the impossible causes have been fully understood. Therefore, an exact publication date will not be announced.

In September 2019 appeared finally a "Draft" ( english draft ) labeled version of a final report.

The final report was published in March 2020. According to the introductory summary, it was concluded that “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 study 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. "

Web links

Individual evidence

  1. ^ College of Engineering and Mines: Leroy Hulsey
  2. ^ Institute of Northern Engineering: A Structural Reevaluation of the Collapse of World Trade Center 7: Project Summary
  3. ↑ Dr. J. Leroy Hulsey, Dr. Feng Xiao, Zhili Quan, Ph.D. Student: A Structural Reevaluation of the Collapse of World Trade Center 7 - September 2017 Progress Report.
  4. ↑ J. Leroy Hulsey: Press release (March 27, 2018)
  5. ↑ J. Leroy Hulsey, Zhili Quan, Feng Xiao: A Structural re-evaluation of the Collapse of World Trade Center 7. Draft . University of Alaska Fairbanks, September 2019. (INE Report 17/18)
  6. ↑ JL Hulsey, Z. Quan, F. Xiao: A structural reevaluation of the collapse of World Trade Center 7 - Final Report. Department of Civil and Environmental Engineering, University of Alaska Fairbanks, Fairbanks 2020.
personal data
SURNAME Hulsey, Leroy
ALTERNATIVE NAMES Hulsey, John Leroy
BRIEF DESCRIPTION American civil engineer and professor at the University of Alaska Fairbanks
DATE OF BIRTH 1941
PLACE OF BIRTH United States