Not very many buildings were ever built Like the towers or building 7.
They were innovative in many ways but the chief flaw was the fire proofing used, a comparison of similar design problems, and conditions occurred in World War 2, on a small aircraft Carrier where the steel failed from fire do to a planes impact and igniting fuel in a small tank that was not properly flooded with CO.
I read about it years ago, while conversing with Jones, Fetzer, Woods, and Frank when they were part of the scholars for truth group.
It was an assessment of damage caused, by the fires, and what would have to be done to repair the carrier.
It was amazing what a small unfought fire could do.