Investigation of the Kansas City Hyatt Regency Walkways Collapse. Building Science Series (Final).
Investigation of the Kansas City Hyatt Regency Walkways
Collapse. Building Science Series (Final).
Marshall, R. D.; Pfrang, E. O.; Leyendecker, E. V.;
Woodward, K. A.; Reed, R. P.; Kasen, M. B.; Shives, T.
NBS BSS 143; May 1982.
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hotels; passageways; collapse; structural steels;
hangers; rods; failure; box beams; loads (forces);
An investigation into the collapse of two suspended
walkways within the atrium area of the Hyatt Regency
Hotel in Kansas City, Mo., is presented in this report.
The investigation included on-site inspections,
laboratory tests and analytical studies. Three suspended
walkways spanned the atrium at the second, third, and
fourth floor levels. The second floor walkway was
suspended from the forth floor walkway which was
directly above it. In turn, this fourth floor walkway
was suspended from the atrium roof framing by a set of
six hanger rods. The third floor walkway was offset from
the other two and was independently suspended from the
roof framing by another set of hanger rods. In the
collapse, the second and fourth floor walkways fell to
the atrium floor with the fourth floor walkway coming to
rest on top of the lower walkway.