Here’s veteran skyscraper engineer Charlie Thornton:
At 02:15 –
– “The people who designed it and the Port Authority, in their public relations and publicity, said what you just said,” [that the buildings were very strong] “but in fact, in plain English, the buildings were a piece of shit.”
And here’s an excerpt from the professional journal Fire Engineering, archived at globalresearch.ca:
https://archives.globalresearch.ca/articles/MAN309A.html
– “The builders and owners of the World Trade Center property, the Port Authority of New York-New Jersey, a governmental agency that operates in an accountability vacuum beyond the reach of local fire and building codes, has denied charges that the buildings’ fire protection or construction components were substandard but has refused to cooperate with requests for documentation supporting its contentions”