The Explanation for the Structural Failure That Led to Hyatt

Multiple Choice

The explanation for the structural failure that led to Hyatt Regency walkway collapse is a

A) change in design by the builder to bolt instead of weld joints holding the walkway.
B) change in design which tripled the load on a nut holding the walkway.
C) decision to opt for two steel rods instead of one holding the walkway.
D) All of the above