The study also concluded that "the collapse of WTC 7 was a global failure involving the near-simultaneous failure of every column in the building." https://www.paulcraigroberts.org/2019/09/04/the-official-story-of-the-collapse-of-wtc-building-7-lies-in-ruins/
In other words, the study concludes that the building was intentionally destroyed by controlled demolition. Controlled demolition means that there was a plan to destroy the building and that access to the building inhabited by a number of US security agencies was permitted in order to wire the building for demolition. This finding is consistent with what the owner of the World Trade Center, Silverstein, said on television, that the decision was made "to pull" the building.
To pull a building means to bring it down by controlled demolition. Later, Silverstein tried to retract his admission and claimed that he meant the decision was made to pull the firemen out of the building, but according to reports no firemen were in the building as the fires were not regarded as of any consequence.