Hyatt Regency walkway collapse

Last updated

Hyatt Regency walkway collapse
Hyatt Regency collapse end view.PNG
Original location of second- and fourth-story walkways
DateJuly 17, 1981;42 years ago (1981-07-17)
Time19:05 CDT (UTC−5)
Location
Coordinates 39°05′06″N94°34′48″W / 39.085°N 94.580°W / 39.085; -94.580
CauseStructural overload resulting from design flaws [1] : iii 
Deaths114
Non-fatal injuries216

Two overhead walkways in the Hyatt Regency Hotel in Kansas City, Missouri, collapsed on July 17, 1981, killing 114 people and injuring 216. Loaded with partygoers, the concrete and glass platforms crashed onto a tea dance in the lobby. Kansas City society was affected for years, with the collapse resulting in billions of dollars of insurance claims, legal investigations, and city government reforms.

Contents

The Hyatt had been built just a few years before, during a nationwide pattern of fast-tracked large construction with reduced oversight and major failures. Its roof had partially collapsed during construction, and the ill-conceived skywalk design progressively degraded due to a miscommunication loop of corporate neglect and irresponsibility. An investigation concluded that it would have failed even under one-third of the weight it held that night. Convicted of gross negligence, misconduct and unprofessional conduct, the engineering company lost its national affiliation and all engineering licenses in four states, but was acquitted of criminal charges. Company owner and engineer of record Jack D. Gillum eventually claimed full responsibility for the collapse and its obvious but unchecked design flaws, and he became an engineering disaster lecturer.

The disaster contributed many lessons and reforms to engineering ethics and safety, and to emergency management. It was the deadliest non-deliberate structural failure since the collapse of Pemberton Mill over 120 years earlier, and remained the second deadliest structural collapse [2] : 4  in the United States until the collapse of the World Trade Center towers 20 years later.

Background

The Kansas City Star described the national climate of the late 1970s as "high unemployment, inflation and double-digit interest rates [that added] pressure on builders to win contracts and complete projects swiftly". [3] Described by the newspaper as fast-tracked, construction began in May 1978 on the 40-story Hyatt Regency Kansas City. There were numerous delays and setbacks, including the collapse of 2,700 square feet (250 m2) of the roof. The newspaper observed that "Notable structures around the country were failing at an alarming rate", which included the 1979 Kemper Arena roof collapse [3] and the 1978 Hartford Civic Center roof collapse. The hotel officially opened on July 1, 1980. [4]

The hotel's lobby was its defining feature, with a multi-story atrium spanned by elevated walkways suspended from the ceiling. These steel, glass and concrete crossings connected the second, third and fourth floors between the north and south wings. The walkways were about 120 feet (37 m) long [1] : 28  and weighed about 64,000 pounds (29,000 kg). [5] The fourth-level walkway was directly above the second-level walkway.

Collapse

Lobby floor, during the first day of the investigation. The third-floor walkway shows the comparable three pairs of tie-rods holding its support beams, which failed on the fourth-floor walkway. Hyatt Kansas City Collapse.gif
Lobby floor, during the first day of the investigation. The third-floor walkway shows the comparable three pairs of tie-rods holding its support beams, which failed on the fourth-floor walkway.
The landing of the concrete fourth-floor walkway, atop the crowded second-floor walkway Hyatt Regency collapse floor view.PNG
The landing of the concrete fourth-floor walkway, atop the crowded second-floor walkway

About 1,600 people gathered in the atrium for a tea dance on the evening of Friday, July 17, 1981. [6] The second-level walkway held about 40 people at about 7:05 p.m., with more on the third and an additional 16 to 20 on the fourth. [1] : 54  The fourth-floor bridge was suspended directly over the second-floor bridge, with the third-floor walkway offset several yards from the others. Guests heard popping noises and a loud crack moments before the fourth-floor walkway dropped several inches, paused, then fell completely onto the second-floor walkway. Both walkways then fell to the crowded lobby floor. [7] [8] A diner at the 42nd-floor revolving restaurant atop the Hyatt said it felt like an explosion. [9]

The rescue operation lasted 14 hours, [8] directed by Kansas City emergency medical director Joseph Waeckerle. [10] Survivors were buried beneath the walkways' many tons of steel, concrete and glass, which the fire department's jacks could not move. Volunteers responded to an appeal and brought jacks, flashlights, compressors, jackhammers, concrete saws and generators from construction companies and suppliers. [11] They also brought cranes and forced the booms through the lobby windows to lift debris. [12] Deputy Fire Chief Arnett Williams recalled this immediate outpouring from the industrial community: "They said 'take what you want'. I don't know if all those people got their equipment back. But no one has ever asked for an accounting and no one has ever submitted a bill." [11]

The dead were taken to a ground-floor exhibition area as a makeshift morgue, [13] and the hotel's driveway and lawn were used as a triage area. [14] Able survivors were instructed to leave the hotel to simplify the rescue effort, and morphine was given to the mortally injured. [7] [15] Blood centers quickly received lineups of hundreds of donors. [16] The Life Line helicopter pilot compared the carnage to the Vietnam War but in greater numbers. [9]

Visibility was poor because of dust and because the power had been cut to prevent fires. [12] [17] Water from the hotel's ruptured sprinkler system flooded the lobby and put trapped survivors at risk of drowning. The final rescued victim, Mark Williams, spent more than nine hours pinned underneath the lower skywalk with both legs dislocated and having nearly drowned before the water was shut off.

Casualties

A total of 114 were killed and 216 injured, [10] [17] 29 of whom were rescued from the rubble. [18] Rescuers often had to dismember bodies to reach survivors among the wreckage. [7] A surgeon spent 20 minutes amputating one victim's pinned and unsalvageable leg with a chainsaw; that victim later died. [9]

Investigation

The original design vis-a-vis the final construction of the fourth-floor walkway support system. The revised design doubled the force on the nut, and hence on the welded joint of the beams which split. HRWalkway.svg
The original design vis-à-vis the final construction of the fourth-floor walkway support system. The revised design doubled the force on the nut, and hence on the welded joint of the beams which split.
A cross-section of the fourth-floor support beam that fell, together with the second-floor support rod passing through its left and right halves vertically Hyatt Regency collapse support.PNG
A cross-section of the fourth-floor support beam that fell, together with the second-floor support rod passing through its left and right halves vertically

The Kansas City Star hired architectural engineer Wayne G. Lischka [3] [19] and national engineering firm Simpson, Gumpertz, and Heger Inc. to investigate the collapse, and Lischka discovered a change to the original design of the walkways. [16] Within days, a laboratory at Lehigh University began testing box beams on behalf of the steel fabrication source. [3] The Missouri licensing board, the state attorney general and Jackson County investigated the collapse over the following years. [16] Edward Pfrang, lead investigator for the National Bureau of Standards, characterized the neglectful corporate culture surrounding the entire Hyatt construction project as "everyone wanting to walk away from responsibility". [3] The NBS's final report cited structural overload resulting from design flaws where "the walkways had only minimal capacity to resist their own weight". [1] : 6  Pfrang concluded they would have failed with one-third of the occupants' weight. [8]

Investigators found that the collapse was the result of changes to the design of the walkway's steel hanger rods. The two walkways were suspended from a set of 1.25-inch-diameter (32 mm) steel hanger rods, [20] with the second-floor walkway hanging directly under the fourth-floor walkway. The fourth-floor walkway platform was supported on three cross-beams suspended by the steel rods retained by nuts. The cross-beams were box girders made from 8-inch-wide (200 mm) C-channel strips welded together lengthwise, with a hollow space between them. The original design by Jack D. Gillum and Associates specified three pairs of rods running from the second-floor walkway to the ceiling, passing through the beams of the fourth-floor walkway, with a nut at the middle of each tie rod tightened up to the bottom of the fourth-floor walkway, and a nut at the bottom of each tie rod tightened up to the bottom of the second-floor walkway. Even this original design supported only 60% of the minimum load required by Kansas City building codes. [21]

Havens Steel Company had manufactured the rods, and the company objected that the whole rod below the fourth floor would have to be threaded in order to screw on the nuts to hold the fourth-floor walkway in place. These threads would be subject to damage as the fourth-floor structure was hoisted into place. Havens Steel proposed that two separate and offset sets of rods be used: the first set suspending the fourth-floor walkway from the ceiling, and the second set suspending the second-floor walkway from the fourth-floor walkway. [22]

This design change would be fatal. In the original design, the beams of the fourth-floor walkway had to support only the weight of the fourth-floor walkway, with the weight of the second-floor walkway supported completely by the rods. In the revised design, however, the fourth-floor beams supported both the fourth- and second-floor walkways, but were strong enough only for 30% of that load. [21]

The serious flaws of the revised design were compounded by the fact that both designs placed the bolts directly through a welded joint connecting two C-channels, the weakest structural point in the box beams. Photographs of the wreckage show excessive deformations of the cross-section. [23] During the failure, the box beams split along the weld and the nut supporting them slipped through the resulting gap, which was consistent with reports that the upper walkway at first fell several inches, after which the nut was held only by the upper side of the box beams; then the upper side of the box beams failed as well, allowing the entire walkway to fall in a cascading failure. [24] A court order was required to retrieve the skywalk pieces from storage for examination. [25]

Investigators concluded that the underlying problem was a lack of proper communication between Jack D. Gillum and Associates and Havens Steel. In particular, the drawings prepared by Gillum and Associates were only preliminary sketches, but Havens Steel interpreted them as finalized drawings. Gillum and Associates failed to review the initial design thoroughly, and engineer Daniel M. Duncan accepted Havens Steel's proposed plan via a phone call without performing necessary calculations or viewing sketches that would have revealed its serious intrinsic flaws—in particular, doubling the load on the fourth-floor beams. [21] Reports and court testimony cited a feedback loop of architects' unverified assumptions, each having believed that someone else had performed calculations and checked reinforcements but without any actual root in documentation or review channels. Onsite workers had neglected to report noticing beams bending, [3] and instead rerouted their heavy wheelbarrows around the unsteady walkways. [2] : 103 

Jack D. Gillum would later reflect that the design flaw was so obvious that "any first-year engineering student could figure it out," if only it had been checked. [3]

The Missouri Board of Architects, Professional Engineers and Land Surveyors found the engineers at Jack D. Gillum and Associates who had approved the final drawings to be culpable of gross negligence, misconduct, and unprofessional conduct in the practice of engineering. They were acquitted of all the crimes with which they were initially charged, but the company lost its engineering licenses in Missouri, Kansas and Texas, and lost its membership with the American Society of Civil Engineers. [3] [21] [23]

In the months after the disaster, more than 300 lawsuits sought a cumulative total of $3 billion (equivalent to $10.1 billion in 2023). [16] Of this, at least $140 million (equivalent to $469 million in 2023) was actually awarded to victims and their families, under hotel owner Crown Center Redevelopment Corporation. [26] The single largest award was about $12 million, for a victim who required full-time medical care. [8] A class-action lawsuit seeking punitive damages was won against Crown Center Corporation, a subsidiary of Hallmark Cards. [27] That lawsuit yielded $10 million, including $6.5 million dedicated as donations to charitable and civic endeavors that Hallmark called a "healing gesture to help Kansas City put the tragedy of the skywalks' collapse behind it." Each of the approximately 1,600 hotel occupants from that night was unconditionally offered $1,000, of which 1,300 accepted by the deadline. Every defendant—including Hallmark Cards, Crown Center Corporation, architects, engineers, and the contractor—denied all legal liability, including that of the egregious engineering faults. [16]

Aftermath

The hotel reopened three months after the tragedy. [8] In 1983, local authorities reported that the $5 million hotel reconstruction made the building "possibly the safest in the country." [16] The hotel was renamed the Hyatt Regency Crown Center in 1987, and the Sheraton Kansas City at Crown Center in 2011. It has been renovated numerous times since, though the lobby retains the same layout and design.

The New York Times said the victims were soon overshadowed by the community's daily preoccupation with the disaster and its polarized attitude of blame-seeking and "vendetta" that soon targeted even the local newspapers, judges and lawyers: "Seldom has a city's establishment been so emotionally torn by catastrophe as Kansas City's was". The owner of the Kansas City Star Company guessed that the huge victim count ensured that "virtually half the town was affected directly or indirectly by the horror of the tragedy". The newspaper generated 16 months' worth of Pulitzer Prize-winning investigative coverage of the disaster—putting the newspaper at odds with the Kansas City community in general, including the management of Hallmark Cards, the parent company of the hotel's owner. [16]

Several rescuers suffered considerable stress due to their experience and later relied upon each other in an informal support group. [17]

Legacy

The Hyatt Regency collapse remains the deadliest non-deliberate structural failure in American history, and it was the deadliest structural collapse [2] : 4  in the U.S. until the collapse of the World Trade Center towers 20 years later. The world responded to the Hyatt disaster by upgrading the culture and academic curriculum of engineering ethics and emergency management. In this respect, the event joins the legacies of the 1984 Bhopal disaster, the 1986 Space Shuttle Challenger disaster and the 1986 Chernobyl disaster. [3] [28]

The disaster provides a case study teaching first responders the "all-hazards approach" to multiple disciplines across jurisdictions, and teaching university students in engineering ethics classes how the smallest personal responsibility can impact the biggest projects with the worst possible results. [29] [30]

[The skywalk design] is one of the worst examples of people trying to push off their responsibilities to other parts of the team ... Since the Hyatt, there has been a lot of activity in the engineering profession to address quality, the final product and how you attain quality. The steps taken after the Hyatt helped the industry recover from failure.

— Paul Munger, chairman of the Missouri architectural board [8]

The American Society of Civil Engineers adopted a clear policy—which carries weight in court—that structural engineers are now ultimately responsible for reviewing shop drawings by fabricators. [8] Trade groups such as the ASCE issued investigations, improved standards of peer review, sponsored seminars and created trade manuals for the improvement of professional standards and public confidence. The Kansas City Codes Administration became its own department, doubling its staff and dedicating a single engineer comprehensively to all aspects of each reviewed building. [3] Kansas City politics and government were colored for years with investigations against corruption. [16] In 1983, the disaster was cited in the argument against the Reagan administration's attempt to eliminate an agency of the National Bureau of Standards. [16]

The Kansas City Star and its associated publication the Kansas City Times won a Pulitzer Prize in 1982 for their 16 months of investigative coverage of the collapse. [31]

A memorial was dedicated by Skywalk Memorial Foundation, a nonprofit organization established for victims of the collapse, on November 12, 2015, in Hospital Hill Park across the street from the hotel. [32] [33] It included a $25,000 donation from Hallmark Cards. [25]

Jack D. Gillum (1928–2012), [34] the owner of the engineering company and an engineer of record for the Hyatt project, occasionally lectured at engineering conferences for years after the tragedy. Claiming full responsibility and disturbed by his memories "365 days a year", he said he wanted "to scare the daylights out of them" in the hope of preventing future mistakes. [3]

The Kansas City rock band the Rainmakers' "Rockin' at the T-Dance", on their 1986 album The Rainmakers, commemorates the tragedy and the negligence that caused it, associating them with the Space Shuttle Challenger disaster, the Apollo 1 fire and the Apollo 13 oxygen tank failure and subsequent investigation. [35]

See also

Related Research Articles

<span class="mw-page-title-main">Tie rod</span> Slender structural unit

A tie rod or tie bar is a slender structural unit used as a tie and capable of carrying tensile loads only. It is any rod or bar-shaped structural member designed to prevent the separation of two parts, as in a vehicle.

<span class="mw-page-title-main">Reinforced concrete</span> Concrete with rebar

Reinforced concrete, also called ferroconcrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ductility. The reinforcement is usually, though not necessarily, steel bars (rebar) and is usually embedded passively in the concrete before the concrete sets. However, post-tensioning is also employed as a technique to reinforce the concrete. In terms of volume used annually, it is one of the most common engineering materials. In corrosion engineering terms, when designed correctly, the alkalinity of the concrete protects the steel rebar from corrosion.

Hyatt Hotels Corporation, commonly known as Hyatt Hotels & Resorts, is an American multinational hospitality company headquartered in the Riverside Plaza area of Chicago that manages and franchises luxury and business hotels, resorts, and vacation properties. Hyatt Hotels & Resorts is one of the businesses managed by the Pritzker family. Hyatt has more than 1350 hotels and all-inclusive properties in 69 countries, across six continents.

<span class="mw-page-title-main">Collapse of the World Trade Center</span> Outcome of September 11 attacks

The World Trade Center in New York City collapsed on September 11, 2001, as result of the al-Qaeda attacks. Two commercial airliners hijacked by al-Qaeda terrorists were deliberately flown into the Twin Towers of the complex, resulting in a total progressive collapse that killed almost 3,000 people. It is the deadliest and costliest building collapse in history.

A catastrophic failure is a sudden and total failure from which recovery is impossible. Catastrophic failures often lead to cascading systems failure. The term is most commonly used for structural failures, but has often been extended to many other disciplines in which total and irrecoverable loss occurs, such as a head crash occurrence on a hard disk drive.

<span class="mw-page-title-main">Crown Center</span> Neighborhood and shopping center of Kansas City, Missouri

Crown Center is a shopping center and neighborhood located near Downtown Kansas City, Missouri between Gillham Road and Main Street to the east and west, and between OK/E 22nd St and E 27th St to the north and south. The shopping center is anchored by Halls, a department store which is owned and operated by Hallmark Cards. The neighborhood contains numerous residences, retail establishments, entertainment venues, and restaurants including the American Restaurant, the only Forbes Travel Guide four-star restaurant in Missouri. It is home to Hallmark Cards, and the headquarters of Shook, Hardy & Bacon and Lathrop GPM, two of Kansas City's largest law firms.

<span class="mw-page-title-main">Versailles wedding hall disaster</span> Disaster in Jerusalem, Israel which caused 23 deaths.

At 22:43 on 24 May 2001, a large portion of the third floor of the Versailles Wedding Hall collapsed in Talpiot, Jerusalem, Israel. Twenty-three people fell to their deaths through two stories, while another 356 were injured to varying degrees.

Dr. W. Gene Corley, P.E. was an American structural engineer and "preeminent expert on building collapse investigations and building codes." Corley was the Senior Vice President of CTLGroup from 1987 to 2013, where he led structural engineering projects, including numerous evaluations of buildings and structures damaged by earthquake, explosions, and from terrorist attacks. He led the investigation of structural performance of the Murrah Building following the Oklahoma City bombing in 1995, and the World Trade Center Building Performance Study in 2001–2002 following the September 11, 2001 attacks. He died on March 1, 2013. He was 77.

<span class="mw-page-title-main">Kansas City Fire Department</span>

The Kansas City Fire Department provides fire protection and emergency medical service for Kansas City, Missouri, and under contract to Village of the Oaks, Village of Oakwood Park, and Village of Oakwood. It provides fire protection only under contract to City of Lake Waukomis, City of Platte Woods, City of Weatherby Lake, and Village of Ferrelview. In addition, it provides EMS support under contract for the City of Riverside. It operates 35 fire stations, one dedicated EMS operations facility housing dynamically deployed ambulances, organized into seven battalions and cover 318 square miles (820 km2).

BNIM is an architecture and design firm founded in 1970 in Kansas City, Missouri.

<span class="mw-page-title-main">Sheraton Kansas City Hotel at Crown Center</span> 45-story hotel located in the Crown Center complex in Kansas City, Missouri

The Sheraton Kansas City Hotel at Crown Center is a 504.0 ft (153.62 m), 45-story hotel located in the Crown Center complex in Kansas City, Missouri. It was Missouri's tallest building from 1980 to 1986. It is now the state's sixth-tallest building and Kansas City's third-tallest building.

<span class="mw-page-title-main">Progressive collapse</span> Building collapse type

Progressive collapse is the process where a primary structural element fails, resulting in the failure of adjoining structural elements, which in turn causes further structural failure.

<span class="mw-page-title-main">Wiss, Janney, Elstner Associates, Inc.</span> American architecture firm

Wiss, Janney, Elstner Associates, Inc. (WJE) is an American corporation of architects, engineers, and materials scientists specializing in the investigation, analysis, testing, and design of repairs for historic and contemporary buildings and structures. Founded in 1956, WJE is headquartered in Northbrook, Illinois, and has over 600 professionals in twenty offices across the United States. WJE personnel are specialized in architectural, structural, and civil engineering; materials conservation, chemistry and petrography, and testing and instrumentation.

<span class="mw-page-title-main">Indianapolis Artsgarden</span> Performing arts venue in Indianapolis, Indiana, U.S.

The Indianapolis Artsgarden is a glassed dome spanning the intersection of Washington and Illinois streets in downtown Indianapolis, Indiana. It serves not only as a pedestrian connector between Circle Centre Mall and nearby office buildings and hotels but also as a venue for the display and performance of artistic and musical works. In addition, the Artsgarden houses the Cultural Concierge, which provides local arts and cultural information, maps, and visitor guides. The structure, including the walkways connecting it to the adjacent buildings, is owned and operated by the Arts Council of Indianapolis.

<span class="mw-page-title-main">Structural integrity and failure</span> Ability of a structure to support a designed structural load without breaking

Structural integrity and failure is an aspect of engineering that deals with the ability of a structure to support a designed structural load without breaking and includes the study of past structural failures in order to prevent failures in future designs.

<span class="mw-page-title-main">Engineering disasters</span> Causes and list of disasters

Engineering disasters often arise from shortcuts in the design process. Engineering is the science and technology used to meet the needs and demands of society. These demands include buildings, aircraft, vessels, and computer software. In order to meet society’s demands, the creation of newer technology and infrastructure must be met efficiently and cost-effectively. To accomplish this, managers and engineers need a mutual approach to the specified demand at hand. This can lead to shortcuts in engineering design to reduce costs of construction and fabrication. Occasionally, these shortcuts can lead to unexpected design failures.

The Station Square collapse, also known as the Save-On-Foods collapse, commonly referred to as "Cave-on-foods", was a major structural failure of a new supermarket and parking facility in Burnaby, British Columbia, Canada. On April 23, 1988, within minutes of the grand opening of a new Save-On-Foods store, a 6,400 square foot (590 m2) portion of the roof collapsed, sending the rooftop parking deck and 20 automobiles crashing into the produce section below. There were no fatalities, and 21 people were treated in hospital. In the years following the collapse, recommendations from a commission of inquiry resulted in significant changes to the practice of architecture and engineering throughout British Columbia.

<span class="mw-page-title-main">NIST World Trade Center Disaster Investigation</span> Post-disaster report

The NIST World Trade Center Disaster Investigation was a report that the National Institute of Standards and Technology (NIST) conducted to establish the likely technical causes of the three building failures that occurred at the World Trade Center following the September 11, 2001 terrorist attacks. The report was mandated as part of the National Construction Safety Team Act, which was signed into law on October 1, 2002 by President George W. Bush. NIST issued its final report on the collapse of the World Trade Center's twin towers in September 2005, and the agency issued its final report on 7 World Trade Center in November 2008.

<span class="mw-page-title-main">Florida International University pedestrian bridge collapse</span> Bridge collapse in Sweetwater, Florida

The Florida International University pedestrian bridge collapse occurred on March 15, 2018, when a 175-foot-long section of the FIU-Sweetwater UniversityCity Pedestrian Bridge collapsed while under construction. The collapse resulted in six deaths, ten injuries, and eight vehicles being crushed underneath. Of the serious injuries, one employee was permanently disabled. At the time of the collapse, six lanes of road beneath the bridge were open to traffic.

<span class="mw-page-title-main">Lev Zetlin</span>

Lev Zetlin was an Israeli-American civil and structural engineer. Founder of the engineering consulting firm Lev Zetlin & Associates, he developed several innovations in structural engineering including the double layer bicycle wheel roof system which he first employed at the Utica Memorial Auditorium and later patented. Zetlin was the structural engineer on 14 pavilions at the 1964–65 New York World's Fair including the New York State Pavilion which utilized his double layer cable suspended roof design.

References

  1. 1 2 3 4 Marshall, Richard D.; et al. (May 31, 1982). "Investigation of the Kansas City Hyatt Regency Walkways Collapse". NIST. Building Science Series. 143. U.S. Dept. of Commerce, National Bureau of Standards. Archived from the original on July 17, 2021. Retrieved July 14, 2021.
  2. 1 2 3 Petroski, Henry (1992) [1985]. To Engineer Is Human: The Role of Failure in Structural Design. Vintage. ISBN   978-0-679-73416-1. OCLC   493623634.
  3. 1 2 3 4 5 6 7 8 9 10 11 Montgomery, Rick (July 15, 2001). "20 years later: Many are continuing to learn from skywalk collapse". The Kansas City Star . p. A1. Archived from the original on January 8, 2016. Retrieved May 4, 2020.
  4. ↑ Staff (July 18, 1981). "45 Killed at Hotel in Kansas City, Mo., as Walkways Fall". The New York Times. ISSN   0362-4331. Archived from the original on July 17, 2019. Retrieved July 17, 2019.
  5. ↑ Roe, Jason. "Hotel Horror". Kansas City Public Library. Archived from the original on April 30, 2019. Retrieved April 30, 2019.
  6. ↑ Ramroth, William (2007). Planning for disaster: how natural and man-made disasters shape the built environment. Kaplan Business. p. 177. ISBN   978-1-4195-9373-4. Archived from the original on 2017-02-15. Retrieved 2017-01-30.
  7. 1 2 3 Friedman, Mark (2002). Everyday crisis management: how to think like an emergency physician. First Decision Press. pp. 134–136. ISBN   978-0-9718452-0-6. Archived from the original on April 17, 2021. Retrieved June 14, 2019– via Google Books.
  8. 1 2 3 4 5 6 7 "Lives forever changed by skywalk collapse". Lawrence Journal-World . Associated Press. July 15, 2001. Archived from the original on June 14, 2010. Retrieved January 28, 2011.
  9. 1 2 3 Staff writers. "Disaster made heroes of the helpers". The Kansas City Star . Archived from the original on 16 October 2014. Retrieved 17 July 2019.
  10. 1 2 Martin, David (September 14, 2011). "Former Chiefs doctor Joseph Waeckerle – a veteran of the NFL's concussion wars – is on a mission to protect young players". The Pitch . Kansas City. Archived from the original on October 20, 2012. Retrieved July 14, 2021.
  11. 1 2 D'Aulairey, Emily; Per Ola D'Aulairey (July 1982). "There Wasn't Time To Scream". Reader's Digest. pp. 49–56.
  12. 1 2 McGuire, Donna. "20 years later: Fatal disaster remains impossible to forget". The Kansas City Star . Archived from the original on August 22, 2011. Retrieved December 3, 2011.
  13. ↑ The Associated Press Library of Disasters: Nuclear and Industrial Disasters. Grolier Academic Reference. 1997. p. 67. ISBN   978-0-7172-9176-2. Archived from the original on 2020-02-21. Retrieved 2016-10-11.{{cite book}}: Unknown parameter |agency= ignored (help)
  14. ↑ Waeckerle, Joseph F. (March 21, 1991). "Disaster Planning and Response". New England Journal of Medicine. 324 (12): 815–821. doi:10.1056/nejm199103213241206. PMID   1997854.
  15. ↑ O'Reilly, Kevin (January 2, 2012). "Disaster medicine dilemmas examined". American Medical News. Vol. 55, no. 1. Archived from the original on April 5, 2019. Retrieved August 9, 2013.
  16. 1 2 3 4 5 6 7 8 9 Haskins, Paul J. (March 29, 1983). "Collapse of Hotel's 'Skywalks' in 1981 is still Reverberating; in Kansas City". The New York Times . Archived from the original on August 27, 2020. Retrieved May 4, 2020.
  17. 1 2 3 Murphy, Kevin (July 9, 2011). "Hyatt skywalks collapse changed lives forever". The Kansas City Star . Archived from the original on July 14, 2021. Retrieved July 14, 2021.
  18. ↑ Incident Command System for Structural Collapse Incidents; ICSSCI-Student Manual (FEMA P-702 ed.). FEMA. 2006. pp. SM 1–7. Archived from the original on April 17, 2021. Retrieved October 10, 2011.
  19. ↑ "History & Education". Archived from the original on February 7, 2005. Retrieved April 30, 2019.
  20. ↑ Baura, Gail (2006). Engineering ethics: an industrial perspective. Academic Press. p. 55. ISBN   978-0-12-088531-2. Archived from the original on 2021-04-17. Retrieved 2020-10-23.
  21. 1 2 3 4 "Hyatt Regency Walkway Collapse". School of Engineering, University of Alabama. Archived from the original on August 14, 2007. Retrieved January 29, 2017.
  22. ↑ Whitbeck, Caroline (1998). Ethics in Engineering Practice and Research. New York: Cambridge University Press. p. 116. ISBN   0-521-47944-4. Archived from the original on 2021-04-17. Retrieved 2016-10-11.
  23. 1 2 "Hyatt Regency Walkway Collapse". Engineering.com. October 24, 2006. Archived from the original on April 3, 2019. Retrieved June 1, 2006.
  24. ↑ NIST, p. 244
  25. 1 2 Murphy, Kevin (July 17, 2014). "From the archives: Surviving the Hyatt skywalk disaster". The Kansas City Star . Archived from the original on August 18, 2020. Retrieved May 4, 2020.
  26. ↑ "Hyatt Regency Disaster | ThinkReliability, Case Studies". ThinkReliability. Archived from the original on July 6, 2019. Retrieved December 15, 2022.
  27. ↑ Staff writers (July 18, 2001). "The Hyatt Regency disaster 20 years later". Seattle Daily Journal of Commerce . Archived from the original on July 25, 2019. Retrieved December 15, 2022.
  28. ↑ Auf der Heide, Erik (1989). Disaster Response: Principles of Preparation and Coordination . St. Louis MO: C.V. Mosby Company. pp.  3, 72, 76, 82. ISBN   0-8016-0385-4.
  29. ↑ Andracsek, Robynn (December 16, 2015). "Why Engineers Must Remember the Kansas City Hyatt Tragedy". Engineering News-Record. Archived from the original on August 1, 2020. Retrieved May 4, 2020.
  30. ↑ "Negligence And The Professional "Debate" Over Responsibility For Design" (PDF). Texas A&M University. February 22, 2009. Archived (PDF) from the original on August 1, 2020. Retrieved May 4, 2020.
  31. ↑ "The Pulitzer Prizes – Local General or Spot News Reporting". Pulitzer.org. Archived from the original on December 28, 2015. Retrieved July 30, 2010.
  32. ↑ Campbell, Matt (November 12, 2015). "Memorial to Kansas City skywalk disaster finally a reality". The Kansas City Star. Archived from the original on September 21, 2016. Retrieved August 27, 2016.
  33. ↑ "Skywalk Memorial Plaza Dedicated". Kansas City Parks & Recreation. November 13, 2015. Archived from the original on July 17, 2019. Retrieved July 17, 2019.
  34. ↑ "Obituary: Jack D. Gillum". Horan & McConaty Funeral Home. July 5, 2012. Archived from the original on December 17, 2013. Retrieved May 4, 2020.
  35. ↑ Mancow: How the Hyatt Disaster & Bob Walkenhorst Derailed KC’s Rainmakers. KC Confidential, May 18, 2012.

Further reading

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.