A group of engineers and architects is demanding the American National Institute of Standards and Technology (NIST) retract and correct a 2008 report that concluded one of three World Trade Center buildings collapsed because fire weakened the steel supporting it in the 9/11 terrorist attacks.
The Architects & Engineers for 9/11 Truth (AE911T) has formally filed a Request for Correction with the NIST following a new and detailed four-year analysis by a team at the University of Alaska Fairbanks (UAF).
It says the World Trade Center (WTC) building 7 collapse was a “near-simultaneous failure of every column in the building” and dismissed the NIST finding that heat from the fire caused beams to “walk off” their moorings.
Sept. 11, 2001 is the tragedy of when two hijacked planes hit the WTC 1 and WTC 2 towers sending debris tumbling onto WTC 7. The NIST claimed that embers ignited a fire which then caused the 47-storey building to collapse on itself at 5:20 p.m., hours after the initial incident that morning.
“We have filed a request for correction because the NIST report is wrong,” says Ted Walter, spokesperson for AE911T, which is a group of 3,000 engineers, scientists and architects, including more than a dozen Canadians ones, that paid US$316,000 for the study.
“From an engineering perspective it is imperative to understand how and why this building came down under design load conditions,” said Walter.
The study says NIST made some fundamental errors in how engineers estimated the rigidity of the outside building frame and that the heat generated by the fire did not trigger “thermal movements” at a critical base plate support.
Further, the group, which includes families of those killed, asserts that the investigation is flawed and that the conclusions as to what happened must be based on “science and engineering” and accept that controlled demolition is a plausible cause.
For expediency and because it was not hit by a plane, the study looked only at WTC 7 not the other two but AE911T has long claimed all three were subject to something beyond heat induced failure.
“The report notes that the outside frame was more flexible than the inside framing which is where the elevator shafts were,” says McMaster University professor emeritus of civil engineering,