Presentation on theme: "Hyatt Regency Walkway Collapse & the TV Antenna Collapse"— Presentation transcript:
1Hyatt Regency Walkway Collapse & the TV Antenna Collapse Group 1: Rebecca Yaffe, Codi-Lee Hayes and Samantha Mearns
2Hyatt Regency Walkway Collapse - Background July 17, 1981 Hyatt Regency Hotel in Kansas City, MissouriTea- dance party in the Atrium lobbyCeiling rod connections failed holding the 2nd and 4th walkwaysMost devastating structural failure114 dead, 200 injuredMillions of dollars in costs
3Key Players Crown Center Redevelopment Corporation, Owner G.C.E. International, Inc. Professional Consulting Firm of Structural EngineersJack D. Gillum, P.E. - structural engineering state licensed since February 26, 1968Daniel M. Duncan, P.E. - structural engineering state licensed since February 27, 1979PBNDML Architects, Planners, Inc., architect. Architect, basic designEldridge Construction Company, the general contractor on the Hyatt projectHavens Steel Company, Professional Fabricator
4CircumstancesDisputed communications between fabricator and G.C.E international Jan-Feb 1979Changed rod design to simplify the assembly- doubled load on the connector Havens claimed to have asked for approval, but G.C.E denies such approvalRoof failed during construction due to failed connectionsFailure wasn’t fully investigated by the owner due to additional costsOriginal walkway design was barely capable of holding appropriate load.G.C.E tells the owner that the entire atrium has a safe design- Nov 1979July 1981 walkways collapse
5Events following the collapse Architects file complaint against G.C.E for gross negligence in connection with their engineering services and designing and constructing the Hyatt Regency HotelFound guilty and lost their licenses to practice engineering in MissouriASCE adopts a report that states structural engineers have full responsibility for design projects.Daniel M Duncan and Jack Gillum are still practicing in states other than Missouri
6Ethics Violations IEEE NSPE 1. Accepting Responsibility -> Denied approving the change in the rod designs and not fully investigating all connections in the atriumNSPE1. Engineers shall hold paramount the safety, health, and welfare of the public. -> Approving the change without being fully aware of the effects of changing the rod designs and not investigating the cause of the collapse, they put the safety of the public in danger.1. Engineers shall be guided in all their relations by the highest standards of honesty and integrity -> G.C.E wasn’t honest about the change approval
7Avoiding the DisasterThis could have been avoided if there was proper communication between the owners, the steel company and the engineersProper investigation of the roof collapsing and the design changeBefore the construction, Jack Gillum and Daniel Duncan could have stopped construction until a proper design was agreed upon that could withstand the heavy load.Architects could have been more involved in the design and construction processIf we were involved, we would have looked at the design and brought it to the attention of all companies involved.
8TV Antenna Collapse 1982 in Texas Antenna was designed and manufactured by Antenna EngineeringRigger inc. was contracted to assemble and raise the antennaDuring the hoisting of the final piece of the antenna, the microwave baskets interfered with the lifting lugs and caused the antenna to fallSeveral riggers fell 1000 ft to their deaths
9CircumstancesThe final section was different from the other sections due to the microwave basketsThe baskets interfered with the lifting cable when the antenna was rotated to a vertical position.The riggers created a makeshift extension to the lifting lug after the Antenna Engineering Comp. refused to allow the riggers to remove the basketsWhile the antenna was being lifted, the bolts on the makeshift lifting lug extension failedIncident was filmed by a T.V station crew, so investigators discovered why the accident occurred.
10Players InvolvedWilliam Harris, President of the Antenna Engineering – recommended to Engineering Division to not get involved with the Riggers problems regarding lifting the Antenna due to liability issues.Harry Jordan, Head of the Engineering Division – Told the riggers not to remove the baskets and informed the riggers that they had responsibility because they approved the designsRiggers, inc – told their problems to Antenna Engineering
11Ethics ViolationsSocial Responsibility versus legal liability -> The Antenna Engineering Company were responsible for their designs even though the Riggers approved the design because the design was dangerous for the people involved.IEEE1. Accepting responsibility and failed innovation -> The riggers didn’t make decisions consistent with safety when designing the makeshift lifting lug.
12Avoiding the DisasterAntenna Engineering could have made their designs more applicable for construction purposesThe Rigger company could look more into the designs to check for any issues that could arise during construction before they approved it.Antenna Engineering could have accepted responsibility for their dangerous designs instead of just pushing the responsibility onto the riggers.The riggers shouldn’t have made a makeshift lug without proper considerationWe could have made sure the design was good for construction and recommended not to make a makeshift lug.
13Our Own Ethical Issues The safety of our volunteers If a volunteer has a medical problemNot specified in our research findingsAccurate researchWant to properly diagnose people in the future
14Steps to Avoid Disasters Make sure all of our volunteers are anonymousMake sure our volunteers are aware of the procedure and what our data will be used for in the futureMaking sure our collection is safeMaking sure that our data is accurate by testing and analyzing our algorithm.