Fast-Tracked Failure: The Hyatt Regency Walkway Collapse

Brick Immortar
10 Oct 202119:43

Summary

TLDRThe Hyatt Regency walkway collapse in Kansas City, Missouri, in 1981 was a catastrophic event that resulted in over 100 deaths and over 200 injuries due to structural failure. The tragedy was caused by design changes, miscommunications, and a rush to complete construction. The incident led to significant legal consequences for engineers and firms involved, as well as reforms in building codes and safety regulations. The Hyatt Regency was later renovated, and a memorial was established to honor the victims.

Takeaways

  • 🏢 The Hyatt Regency walkway collapse in Kansas City, Missouri, was a catastrophic structural failure that occurred in 1981, resulting in over 100 deaths.
  • 🕺 The Hyatt Regency was a popular venue for tea dances, which attracted large crowds, including the night of the collapse when approximately 1,500 to 2,000 people were present.
  • 🔍 The initial design for the walkways was altered late in the construction process, changing from single support rods to a double hanger rod and box beam connection, which was a critical factor in the collapse.
  • 👷‍♂️ Fast-tracked construction, miscommunications, and a lack of redundancy in design contributed to the disaster, reflecting a culture of prioritizing speed over safety.
  • 🚨 The National Bureau of Standards (NBS, now NIST) conducted a comprehensive investigation, which included interviews, lab studies, and physical simulations, to determine the cause of the collapse.
  • 🏥 The response to the disaster involved immediate action from local fire and police departments, with over 100 first responders on the scene by the end of the night.
  • 📊 The NBS investigation concluded that the design change, which reduced the load-bearing capacity of the walkways, was the primary cause of the collapse.
  • 🏗️ The construction industry's culture at the time, which often dismissed the importance of peer reviews and quality control, played a significant role in the tragedy.
  • 📜 Legal and professional consequences followed, with engineers losing their licenses and firms going bankrupt, highlighting the severity of the negligence involved.
  • 🏛️ The Hyatt Regency underwent renovations, removing the suspended walkways and installing a wider, safer deck supported by columns, reflecting lessons learned from the disaster.

Q & A

  • What was the Hyatt Regency walkway collapse?

    -The Hyatt Regency walkway collapse was a structural failure that occurred on July 17, 1981, in Kansas City, Missouri, resulting in the tragic loss of 114 lives and injuring over 200 people when two walkways in the hotel's atrium collapsed during a crowded event.

  • What was the primary cause of the Hyatt Regency walkway collapse?

    -The primary cause of the collapse was a design flaw in the walkways' support system. The original design was altered late in the construction process, changing the support from three pairs of single rods to a double hanger rod system that was unable to support the weight of the walkways and the people on them.

  • What was the role of fast-tracked construction in the disaster?

    -Fast-tracked construction played a significant role in the disaster by prioritizing speed over quality and safety, leading to miscommunications, design changes without proper review, and a lack of quality control and peer reviews, which ultimately contributed to the structural failure.

  • What was the impact of the Hyatt Regency walkway collapse on the community?

    -The impact was profound, with the tragedy affecting the entire community of Kansas City. The incident led to trauma counseling for survivors and first responders, and it was said that nearly everyone in the city had some connection to someone involved in the tragedy.

  • What were the immediate rescue efforts after the collapse?

    -The immediate rescue efforts involved the Kansas City Fire Department and police department, with over 100 firefighters, EMTs, doctors, and nurses on scene by 7:52 p.m. They worked through the night to rescue, recover, and provide medical assistance to the victims, using equipment like forklifts and a heavy crane that arrived later.

  • What was the role of the National Bureau of Standards (NBS) in the aftermath of the collapse?

    -The NBS conducted a comprehensive 10-month investigation into the cause of the collapse. They analyzed the walkway spans, supporting rods, photographic evidence, and testimonies. They also conducted lab studies, mockup tests, and physical simulations to determine the structural failure's root cause.

  • What were the legal consequences for the engineers and companies involved in the Hyatt Regency walkway collapse?

    -In 1984, civil charges were brought against the project engineer, Jack Gillum, the engineer of record, and the GCE firm by the Missouri Board for Architects, Professional Engineers, and Land Surveyors. Several engineers lost their licenses, and firms went bankrupt as a result of the hearings. Legal suits and insurance claims amounted to billions of dollars.

  • How did the Hyatt Regency walkway collapse lead to changes in construction practices and regulations?

    -The disaster led to significant reforms in construction practices and regulations, including the implementation of stricter safety standards, the enforcement of quality control processes, and the requirement for peer reviews. It also highlighted the need for a culture of accountability in the construction industry.

  • What memorial exists to commemorate the victims of the Hyatt Regency walkway collapse?

    -The Skywalk Memorial Plaza was established adjacent to the Northeast of the former Hyatt Regency site. It features a memorial with the names of the victims prominently displayed to honor their memory.

  • What changes were made to the Hyatt Regency atrium after the collapse?

    -Renovations to the atrium removed the remaining suspended third-floor walkway and constructed a single, much wider deck at the second floor level supported by massive columns, completely doing away with the previous walkway designs.

Outlines

00:00

🏢 Hyatt Regency Walkway Collapse

The Hyatt Regency in Kansas City, Missouri, experienced a catastrophic walkway collapse in 1981 due to design flaws and miscommunications during construction. The event resulted in over 100 deaths and numerous injuries during a crowded tea dance event. The atrium, designed with four-story high walkways, was a popular spot for social gatherings. The tragedy occurred when the topmost walkway and the one below it collapsed, crushing people below. The aftermath involved a massive rescue effort, with first responders facing the gruesome task of recovering victims amidst water and electrical hazards. The incident highlighted the need for better construction oversight and the importance of understanding the psychological impact on rescuers, as PTSD was not well recognized at the time.

05:00

🏗️ Construction and Design Flaws

The Hyatt Regency was part of the Crown Center redevelopment project, aimed at revitalizing downtown Kansas City. The hotel featured a unique four-story atrium with walkways connecting different parts of the building. The construction process was marked by fast-tracking, which led to oversights and design changes. The original design called for single support rods for the walkways, but these were changed to a double hanger rod system at the request of the contractor, Haven Steel. This change, along with other construction missteps, resulted in a structure that could not support the weight it was designed to bear. The incident also occurred against a backdrop of similar construction failures, indicating a broader issue with the industry's approach to safety and quality control.

10:02

🔍 Investigation and Aftermath

Following the collapse, the National Bureau of Standards (NBS) conducted a thorough investigation, which included analyzing the walkway spans, supporting rods, and other evidence. The NBS found that the design changes had significantly reduced the walkways' load-bearing capacity. The investigation revealed a lack of communication, poor management of responsibility, and a disregard for safety regulations. The trial that followed saw engineers and firms held accountable, with some losing their licenses and firms facing bankruptcy. The tragedy led to significant changes in building codes, insurance claims, and a reevaluation of construction practices, emphasizing the need for a culture of accountability and public safety.

15:03

📜 Legal Consequences and Memorial

The legal proceedings that ensued after the Hyatt Regency walkway collapse resulted in civil charges against key engineers and the engineering firm GCE. The charges included gross negligence, incompetence, and misconduct. The trial led to the revocation of licenses for several engineers and had a profound impact on the engineering industry, prompting reforms in safety regulations and construction practices. The hotel underwent renovations, removing the problematic walkway design. A memorial was established to honor the victims of the tragedy, ensuring that their memory serves as a reminder of the importance of safety and responsibility in construction.

Mindmap

Keywords

💡Hyatt Regency walkway collapse

The Hyatt Regency walkway collapse refers to a catastrophic structural failure that occurred in 1981 at the Hyatt Regency Hotel in Kansas City, Missouri, resulting in the tragic loss of over 100 lives. This event is central to the video's theme as it explores the causes and consequences of this disaster, highlighting the importance of structural integrity and safety in construction.

💡Fast-tracked construction

Fast-tracked construction is a term used to describe a construction process that is accelerated to complete a project as quickly as possible, often at the expense of thoroughness in design review and quality control. In the context of the video, this approach is identified as a significant factor contributing to the structural failure of the walkways, emphasizing the need for a balance between speed and safety.

💡Design changes

Design changes refer to modifications made to the original architectural or engineering plans during the construction process. The video discusses how certain design changes, such as the alteration of support rod configurations, played a critical role in the failure of the walkways. These changes were made without adequate review or consideration of their impact on structural integrity.

💡Miscommunications

Miscommunications denote the failure to convey or understand information accurately among the parties involved in a project. The video script points out that miscommunications between engineers, contractors, and inspectors contributed to the collapse by leading to oversights in the construction process and a lack of accountability.

💡Structural failure

Structural failure is the inability of a constructed object to support its intended loads, leading to partial or complete collapse. The video's main theme revolves around the structural failure of the Hyatt Regency walkways, examining the technical and human factors that led to this devastating event.

💡National Bureau of Standards (NBS)

The National Bureau of Standards, now known as the National Institute of Standards and Technology (NIST), is a U.S. government agency responsible for standards and technology research. In the video, NBS is mentioned as the investigative body that conducted a thorough analysis of the walkway collapse, contributing to the understanding of what went wrong and how to prevent similar disasters.

💡Crown Center

Crown Center is an 85-acre complex in Kansas City that includes the Hyatt Regency Hotel where the tragedy occurred. The video discusses the history and significance of Crown Center as a major urban development project, providing context for the Hyatt Regency's role within the larger complex.

💡Tea dances

Tea dances were popular social events held at the Hyatt Regency, attracting large crowds to the hotel's atrium. The video uses tea dances as a backdrop to the tragedy, illustrating the bustling atmosphere and the number of people affected by the walkway collapse.

💡Investigation and trial

The investigation and trial refer to the legal and technical processes that followed the collapse to determine responsibility and implement changes to prevent future incidents. The video details the extensive efforts to understand the causes of the disaster and the legal consequences faced by the involved parties, highlighting the importance of accountability in engineering and construction.

💡Quality control

Quality control is the process of ensuring that products or services meet certain standards of quality. In the video, the lack of quality control measures during the construction of the Hyatt Regency walkways is highlighted as a contributing factor to the collapse, underscoring the necessity of rigorous inspection and adherence to safety standards.

💡Accountability

Accountability is the obligation to accept responsibility for one's actions or decisions. The video emphasizes the importance of a culture of accountability in the construction industry, where engineers, contractors, and inspectors are held responsible for adhering to safety standards and ethical practices to prevent disasters like the Hyatt Regency walkway collapse.

Highlights

The Hyatt Regency walkway collapse in Kansas City, Missouri, was a preventable structural failure that resulted in over 100 deaths.

The tragedy occurred during a tea dance event, which was a popular social gathering attracting a large crowd.

The walkways collapsed due to a design flaw that changed from single support rods to a double hanger rod system.

The initial design was barely capable of supporting the expected loads, even before the change.

The construction was fast-tracked, prioritizing speed over safety and quality control.

The investigation by the National Bureau of Standards highlighted the lack of redundancy in the design and construction.

The walkways were constructed with minimal capacity to resist their own weight, let alone additional loads from people.

The tragedy led to significant trauma for survivors and first responders, occurring before PTSD was well understood.

The Hyatt Regency was part of the Crown Center redevelopment project, aimed at revitalizing downtown Kansas City.

The collapse was influenced by a culture that prioritized schedule and cost over proper engineering calculations.

The investigation revealed miscommunications and a lack of peer review or design quality control during construction.

The walkway design was changed late in the construction process without proper review or calculation.

The tragedy prompted legal actions, insurance claims, and policy reforms, including changes in engineering practices.

The aftermath included a 26-week investigative trial and a shift in the culture of accountability in the construction industry.

The hotel underwent renovations, removing the suspended walkway design and replacing it with a safer structure.

A memorial was established to honor the victims of the Hyatt Regency walkway collapse.

Transcripts

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in 1981 design changes miscommunications

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and a culture of fast-tracked

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construction led to the Hyatt Regency

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walkway collapse a tragic and

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preventable structural failure in Kansas

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City Missouri that claimed over 100

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innocent

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[Music]

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lives

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[Music]

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it was just we were standing there and

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all of a sudden it was on top of us

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people praying and people calling for

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help and it was so uh crowded there at

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the edge of the dance for from watching

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the dance contest that no one had a

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chance to run away from

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it the Crown Center an 85 acre location

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of fountains public parks high-rise

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hotels retail and more has long been a

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primary destination in the downtown

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Kansas City area the tea dances of the

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time period were big band Big Draw

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events attracting large crowds from

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20-somethings to seniors at the Hyatt

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Crown Center in Kansas City every Friday

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partygoers would arrive in the late

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afternoon dining drinking and dancing

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the evening away held in the Hyatt's

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four-story Grand Atrium the majority of

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seating the evenings band The main Dance

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Floor dining and activities all

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centralized on the first floor with the

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surrounding second through fourth floors

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used mostly for those spectating

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lounging or dancing away from the main

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crowd with the Terrace balconies and

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three Skywalk style walkways offering

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impressive verticality and easy access

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to equally impressive views overlooking

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the party below these tea dances filled

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the massive Atrium making it a lively

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happy bustling place to dance your cares

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away and Usher in the

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weekend almost exactly 1 year after the

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Hyatt location's July 1980 grand opening

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the tea dance crowd on Friday July 17th

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1981 by 1900 hours had reached the size

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of roughly 1,500 to 2,000 with dozens

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occupying the walkways

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above and just as the band returned from

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their break to pick the music back up at

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7:05 the topmost walkway on the fourth

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floor the one holding the second floor

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walkway ripped loose from its support

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rods at first making a loud pop heard by

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some then instantly and simultaneously

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sending both walkways crashing to the

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floor below pancaking each other in the

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process the third floor walkway

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remaining unaffected and still in

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place the collapse created such an

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unimaginably gruesome scene that it

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would haunt survivors and Rescuers for

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the rest of their

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lives the sheer force of these

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collapsing walkways experienced by those

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both on and under underneath rendered

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many victims nearly unrecognizable or

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largely unrecoverable causing such a

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great deal of trauma to those First

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Responders and survivors and all this in

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the days before PTSD was well understood

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that when attempting to ascertain the

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approximate number of occupants on the

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walkways at time of collapse

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investigators like the National Bureau

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of standards would in a rare move for

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such an agency later utilize only local

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press interviews afterwards for

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eyewitness accounts stating this

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investigation did not include any

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organized effort to interview or solicit

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eyewitness accounts of the collapse not

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because of Any unwillingness to

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cooperate but primarily because of great

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difficulty in recalling And discussing

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the

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event the National Bureau of Standards

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or NBS now known as the National

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Institute of Standards and technology or

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nist chose to forego this portion of the

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investigation concluding that a rough

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estimate of 63 persons total occupied

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the second and fourth floor walkways at

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the time of

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collapse amidst the chaos and confusion

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water was pouring into and filling the

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atrium floor putting trapped victims at

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further risk blasting out from High

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Press sprinkler pipes ripped apart when

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the walkways fell made all the more

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perilous by live arcing electrical wires

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now strewn about for the same

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reason rescue would be carried out all

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through the night the Kansas City Fire

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Department and police department within

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the first moments then by 7:52 p.m.

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after calls for additional assistance

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100 plus firefighters EMTs doctors and

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nurses would be on scene working in

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whatever way they could to rescue

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recover determine needs for triage and

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attempt to comfort those still alive

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trapped in the rubble in addition to

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forklifts and other equipment already on

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scene by 10:30 p.m. a heavy crane would

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arrive and be on standby it wasn't until

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just after 3:00 a.m. however when the

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first large section could be lifted span

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u89 after which at 4:30 a.m. the final

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Survivor would be pulled from the debris

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at 6:00 a.m. the next span to be lifted

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u78 revealed and confirmed Grim

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expectations 31 victims crushed and

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lifeless

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Beneath The Rescuers First Responders

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their coordination decisive action and

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bravery in the face of such unimaginable

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circumstances was legendary and has been

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well recognized over the years in total

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after investigations hospitalizations

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and victim identifications it was

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determined that over 200 were injured

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and 114 Souls were

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lost named for Hallmark's crown logo and

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opened in 1971 Kansas City's Crown

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Center would be founded by Hallmark

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cards Incorporated intended to transform

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this area of downtown from deteriorating

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parking lots and dilapidated buildings

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to one of the area's main attractions

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through an urban renewal project of

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vertical ality in retail residential

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office and event space along with top

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hotels outdoor public parks water

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features and more and thus the Crown

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Center Redevelopment Corporation was

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also

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formed in 1976 Crown would commission

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Structural Engineering consultation and

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design duties to GCE International

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Incorporated and Structural Engineering

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Services to pbnd DML Architects and

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planners Incorporated for the upcoming

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700 50 room 45 story Hyatt Hotel the

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general contractor would be Eldridge

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Construction Company who would in turn

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subcontract much of this work out to

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Haven Steel company the primary

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subcontracted portion being the

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four-story atrium Lobby connecting the

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north highrise with the South function

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and guest Recreation Wing by Spring of

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1978 construction was underway on the

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hayatt and like many similar projects in

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other booming US cities of this era fast

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tracking the process from start to

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finish would be a primary goal for many

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parties

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involved in the early months of 1979

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much back and forth took place though

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between GCE the Consulting Engineers and

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contractor Haven steel regarding the

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hm's walkways drawings revised in an

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overall plan of single support rods for

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the fourth and second floor walkways

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done away with at the request of Haven

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Steel in favor of a double hanger Rod

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box beam Connection in which to suspend

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each walkway these revisions would

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receive the approval of engineering firm

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GCE specifically engineer of record Jack

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D gillum's personal stamp of

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approval in October of 1979 however with

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construction of the atrium well underway

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a 2,700 plus squ ft portion of the

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atrium's roof collapsed fortunately

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causing no injuries but still drawing

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the attention of inspectors and prompted

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Crown development to bring on an

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independent engineering firm firm seden

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pagee to investigate the

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incident this investigative firm though

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would only seek to determine cause of

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the roof collapse their scope of work

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not including any sort of design review

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analysis of engineering revisions nor

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any other portion of the atrium under

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construction and just a month later in

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November 1979 the owners and Architects

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gave assurances of the entire atriums

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quote overall

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safety noteworthy and causing related

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concern around the same time just a few

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months prior in that same year the roof

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of Kansas City's keer Arena had

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collapsed fortunately while unoccupied

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and with lack of injury but largely due

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to the time period's overarching

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phenomenon of fast-tracked construction

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a lack of redundancy in the roof trusses

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and underestimation in the Gathering of

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roof collected rainwater ironically just

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one day prior a convention for the

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American Institute of Architects was

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held just half a mile away from the keer

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arena a prominent institution that had

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bestowed their honor award upon the

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arena in 1976 considering it quote one

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of the finest buildings in the

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nation also notable was in January of

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1978 the Hartford Civic Center's roof

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collapsed just 6 hours after the Ukon

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verse UMass men's college basketball

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game in Hartford Connecticut luckily

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with no injuries a tragedy narrowly

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avoided this major collapse was first

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blamed on rooftop snow but investigators

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found it to be glaringly due to

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miscommunications of responsibility

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during construction disparities between

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original design versus actual

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construction and a specific lack of any

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peerreview or design Quality Control

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process all of which proving to be yet

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another case of fast trct construction

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that due to such pathetically

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underestimated loads investigators

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discovered the Hartford Civic Center's

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roof had been bowing and beginning to

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fail even since the first days of

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construction work would continue on the

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atrium at the Hyatt fast forward to July

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of 1980 with construction now complete

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the hayatt Regency Hotel and its Grand

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Atrium were now ready for

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guests Kansas City was shook by this

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incident to its core trauma counseling

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the sights sounds and even smells

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Rescuers dealt with and there were so

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many lost that it was said Citywide

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nearly everyone had some sort of

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connection to someone involved with or

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lost in this tragedy

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between July 21st and August 13th

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recovery operations of the walkway spans

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and their supporting rods would commence

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lifting them with straps and cross beams

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to be relocated to a secure warehouse

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nearby for storage and controlled

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analysis by NBS investigators engineers

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and

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scientists this along with kmc's

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videotape photographic evidence gathered

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prior to debris removal testimony and

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investigation of key parties

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comprehensive lab studies combined with

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mockup and physical simulation testing

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and The Limited eyewitness accounts it

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was a near 10-month Long investigative

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process with nbs's final report being

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issued in May of

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1982 Then followed up by a more than

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2-year long trial process that will

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cover in this video

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shortly widely known is that the failure

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was ultimately down to poor design and

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the supporting rods revisions late in

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the process changing the second and

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fourth floor portion from three pairs of

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single rods suspended from the ceiling

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to three pairs suspending the fourth

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floor segment and a second set of rods

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offset to the inside of the Box beams

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the Second Story walkway suspended in

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the same

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fashion in the original designs the

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upper not only carries the load of the

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four floor

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walkway with the single Rod transferring

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the load

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uniformly the second floor at the bottom

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of the rod would work on the same

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principle now with the revised design

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however the lower nut on the fourth

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floor's box beam connection carries the

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weight of the fourth floor and second

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floor walkways combined as if to be one

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unit like trying to pull a large stalled

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vehicle with a rope one team all grabs

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hold of a single rope spanning the

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length of the team but the other is only

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allowed the person in front to grab the

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Rope attached to the vehicle the rest

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required to pull a separate rope

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attached via harness to the leader whose

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grip must now compensate for the pulling

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action of the entire team behind as

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well the leader may be able to maintain

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grip briefly like the walkways holding

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their own weight for a time but his grip

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will quickly become the weak point like

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the end of the Box

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beams the box beam would split at the

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welds and the downward force would pull

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it around the uppermost rods nut

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fastened below the box beam and thus all

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that remained suspended from the ceiling

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where the walkways fell were those three

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pairs of rods with their nuts still

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attached box beam hanger Rod connection

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9u was considered by the NBS as first to

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give way stating there was also evidence

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to support the bottom weld having

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already given way sometime prior to the

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spectators gathering on the walkways

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oscillations were also observed

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According to some eyewitness accounts

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initiated by dancing Spectators however

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NBS investigators found this to be

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negligible and not directly additive

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stating walking or dancing on the

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walkways would not have been significant

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in comparison to the static

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loads rarely is a single party or a

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point of failure if ever to blame though

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the breakdowns in communication the

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group think fragile egos prioritization

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of schedule or cost over propop

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calculations mismanagement of

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responsibility chains of failure like

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these are where you'll find your true

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need for more awareness the part of the

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process where big fragile egos say no

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keep prying eyes away is where the light

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needs to be Shine the brightest to

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affect any real change before all the

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technical designs new policies

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procedures and proper follow-through can

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even be effective as we've seen in so

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many of these videos now there has to be

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parties involved that care about public

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safety and doing the right thing to

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begin with when those who have the

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authority over others can dismiss out of

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hand updated processes like peer reviews

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quality control and safety regulations

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what good are the policy changes without

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an overall culture of

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accountability this H Regency walkway

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collapse was the epitome of these

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circumstances when atrium construction

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resumed after the initial roof collapse

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amidst that incident's investigation and

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up against a now further delayed

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schedule combined this with peer reviews

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and overall quality control seen as more

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of an inconvenience in the industry's

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cultural climate at the time the

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walkways have been constructed using

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those revised prints the design change

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requested by Haven steel because the

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fabric fabricator wanted to avoid

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threading the entire length of each Rod

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one of the reasons given allegedly being

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that fully threaded rods of these

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lengths were more prone to damage in

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handling and construction which I

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personally find questionable as being

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the only reason it reeks of there being

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more to it like cost cutting or

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time-saving in addition multiple

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requests by Gillum himself and GCE to

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have a resident inspector full-time on

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site would go unapproved by Crown due to

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additional cost

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through an exhaustive search by NBS

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pouring over various records and

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documents though it was discovered that

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inspection company general Testing

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Laboratories Incorporated had been

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brought in for a one-time inspection

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during a 3-day period in August of

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1979 specifically to inspect the bolted

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connections of the hanger rods but that

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quote the hanging walkways were

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inaccessible due to metal decking or

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difficulty of position and that the

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connections were not checked by a

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calibrated t T wrench no additional

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information on the walkways was found in

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these reports filed by General Testing

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Laboratories with this revised walkway

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design from the day of construction they

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had only minimal capacity to resist even

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their own weight and had virtually no

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capacity to resist additional loads

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imposed by people also important to note

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though was that even the original

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designs were later determined to be just

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barely capable of holding their expected

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loads even if the single contain ous

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rods had been used calculations bore out

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that their capacity would have been just

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60% of what's required by Kansas City

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building code at the time the 26 week

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long investigative trial that took place

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thereafter saw GCE Representatives

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denying having ever received calls about

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the design changes by Havens denying the

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conversations ever took place at all yet

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engineer of record Jack Gillum had still

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applied his personal stamp his seal of

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approval to the design revisions the

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implication being that in this

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atmosphere of such poor mismanagement of

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responsibility it's widely concluded

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that approval was given to the change

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inexplicably with Zero review in

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calculation or design as an engineer

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record you take the full responsibility

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and that's what I did I sealed the

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drawing and that's what where the buck

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stopped and that's where will on every

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single project in 1984 civil charges

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were brought against Daniel M Duncan the

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project engineer Jack Gillum engineer of

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record along with the rest of the GCE

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firm by the Missouri Board for

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Architects Professional Engineers and

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land

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surveyors the charges being gross

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negligence incompetence misconduct and

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unprofessional conduct in their practice

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of engineering several Engineers lost

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licenses and firms went bankrupt as a

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result of the hearings billions of

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dollars in legal suits insurance claims

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and City policy reforms also came as a

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result by November of 1984 Duncan and

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Gillum had been found guilty of their

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previous charges and could no longer

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practice Engineering in the states of

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Missouri and Texas both of which still

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went on to practice in other states

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though and for their part it's been said

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they have had difficulty living with

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their

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anguish renovations to The Atrium would

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still include the second floor Terrace

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but the remaining suspended third floor

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walkway would be removed and eventually

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a single much wider deck was constructed

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at the second floor level supported by

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massive columns doing away with the

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previous walkway designs

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entirely the hotel would be bought out

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in 2011 becoming the Sheridan at Crown

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Center the brand it retains to this

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day the Skywalk Memorial Plaza sits

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adjacent just to the Northeast with its

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features well cared for and list of

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names prominent on the main

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[Music]

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Memorial

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[Music]

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[Music]

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for

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[Music]

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for

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Etiquetas Relacionadas
Engineering DisasterStructural FailureHyatt RegencyKansas CitySafety NegligenceConstruction Flaws1981 CollapseWalkway TragedyDesign MistakesDisaster Response
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