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The Truss Failure Theory is a Diversion

It avoids the glaring deficiencies of the column failure theory, but likewise doesn't begin to explain total collapse.

  • Prerequisites didn't exist.
    • Neither tower's fires covered even one entire floor.
    • Eager's zipper scenario is impossible given the cross-trussing.
  • Domino-effect floor failures were not possible.
    • The fall of a floor would easily be absorbed by the floor below.
    • Some floors must have had large I-beams. Otherwise the building's tube-within-a-tube design made no sense.
  • Supposed end result doesn't follow.
    • A domino effect collapse of the floor diaphragms would have left the perimeter wall and core standing -- The floors would have slid down the cores like records on a spindle.
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