Scott Grainger, is a fire protection engineer who holds licenses in 13 states. He has been a practicing engineering for 39 years, the last 25 of them in private practice. Half of his practice is in forensic engineering.
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According to NIST, the failure occurred at column 79 on level 12. This means basically they're talking about a single columnar collapse, or failure, that resulted in a total collapse of the building. That just does not make any sense.
