[PDF] Investigation of the Kansas City Hyatt Regency walkways collapse





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HYATT REGENCY HOTEL IN KANSAS CITY COLLAPSE – A CASE

the walkways. One hundred fourteen people were killed. • It was an accident that could have been prevented if a better coordinated engineering review had taken 



Two Rods Dont Make It Right

the Hyatt Regency Hotel in Kansas City Missouri filled its lobby with guests participating in and walkways



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Investigation of the Kansas City Hyatt Regency walkways collapse

Nov 30 1981 Summary. 10. 3. DESCRIPTION OF THE WALKWAY SYSTEM PRIOR TO COLLAPSE. 11. 3.1. Introduction. 11. 3.2. General Layout of the Hyatt Regency ...



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interior walkways in the lobby atrium collapsed at the recently constructed Hyatt Regency Hotel in Kansas City with a resulting loss of 114 lives and 



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The Hyatt Regency Walkways Collapse provides a vivid example of the importance of accuracy and detail in engineering design and shop drawings (particularly regarding revisions) and the costly consequences of negligence in this realm



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Hyatt Regency walkways collapse left 114 dead and in excess of 200 injured In addition millions of dollars in costs resulted from the collapse and thousands of lives were adversely affected The hotel had only been in operation for approximately one year at the time of the walkways collapse and



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the collapse They quickly discovered that the rods bolts and washers that supported the fourth-? oor skywalk were largely undamaged and still hanging from the lobby ceiling Inspection of the failed walkways con? rmed the cause of failure: the two channels that transferred the walkway loading into the steel



Searches related to hyatt regency walkway collapse summary filetype:pdf

Kansas City Hyatt Regency Hotel Walkway Collapse What caused the worst structural engineering disaster in the United States? The hotel was designed and built with an atrium lobby with walkways above the lobby floor The critical walkways were the 4thfloor walkway which was directly above the 2ndfloor walkway

Where were the Hyatt Regency Hotel walkways collapsed?

    Locations of the second and fourth story walkways which collapsed into the lobby of the Hyatt Regency hotel. The Hyatt Regency hotel walkway collapse occurred at the Hyatt Regency Kansas City in Kansas City, Missouri, United States on Friday, July 17, 1981.

How many people died in the Kansas City Hyatt Regency collapse?

    As the United States' most devastating structural failure, in terms of loss of life and injuries, the Kansas City Hyatt Regency walkways collapse left 114 dead and in excess of 200 injured. In addition, millions of dollars in costs resulted from the co l apse, and thousands of lives were adversely affected.

Who is responsible for building a Hyatt Regency walkway?

    As a result of the Hyatt Regency Walkways Collapse, the American Society of Civil Engineering (ASCE) adopted a report that states structural engineers have full responsibility for design projects. Both Duncan and Gillum are now practicing engineers in states other than Missouri and Texas.

Was the Hyatt Regency built in an era tainted by corruption?

    "Surfside condo built in era tainted by corruption | Fred Grimm". sun-sentinel.com. Retrieved July 15, 2021. ^ Spocchia, Gina. "Hyatt Regency walkway collapse: 40 years ago today one of America's deadliest structural collapses took place".

NBSIR82-2465

InvestigationoftheKansasCity

HyattRegencyWalkwaysCollapse

US.DEPARTMENTOFCOMMERCE

NationalBureauofStandards

Washington,DC20234

Feburary1982

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.056 j0» 'ARTMENTOFCOMMERCE

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1982
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NBSIR82-2465

/o&SC ^iCTD mz. C.Z-

INVESTIGATIONOFTHEKANSASCITY

HYATTREGENCYWALKWAYSCOLLAPSE

R.D.Marshall

E.0.Pfrang

E.V.Leyendecker

K.A.Woodward

CenterforBuildingTechnology

NationalEngineeringLaboratory

R,P.Reed

M.B.Kasen

T.R.Shives

CenterforMaterialsScience

NationalMeasurementLaboratory

US.DEPARTMENTOFCOMMERCE

NationalBureauofStandards

Washington,DC20234

February1982

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ABSTRACT

analyticalstudies. publishedasNBSIR82-2465A. walkway. iii Iv

EXECUTIVESUMMARY

duringtheconstructionprocess. thecollapse. V beamsandonthroughthesecondfloorboxbeams.Theboxbeams - madeupofa pairof8-inchsteelchannelswiththeflangesweldedtoetotoe - weretorest andarchitect.

BuildingCode,

onthebasisoflaboratorytestresults, VI boxbeam-hangerrodconnections timeofcollapse. vil J viii

TABLEOFCONTENTS

Page

ABSTRACTill

EXECUTIVESUMMARYv

1.INTRODUCTION1

1.1Background1

1.2ObjectiveandScopeoftheInvestigation1

1.3OrganizationoftheReport2

2.1Introduction-5

2.2AccesstoDocuments5

2.4ArchitecturalandStructuralDrawings6

2.5ShopDrawings7

2.6DailyLogsandInspectionReports8

2.7OtherDocumentsandMaterialsReviewed9

2.8Summary10

3.1Introduction11

3.4ProbableSequenceofErection13

3.5DesignationofWalkwayComponents14

3.6Summary14

4.DESCRIPTIONOFTHEWALKWAYCOLLAPSE31

4.1Introduction31

4.3EyewitnessAccountsofCollapse32

4.5RemovalandStorageofWalkwayDebris35

4.6Summary35

5.SITEINVESTIGATION43

5.1Introduction43

5.2SurveyoftheHyattRegencyAtrium43

5.2.1EmbeddedPlatesandBearingSeats44

5.2.2FourthFloortoCeilingHangerRods44

5.2.3ImpactPointsonAtriumFloor45

IX

TABLEOFCONTENTS(Continued)

Page

5.3ObservationsofWalkwayDebris46

5.3.1General47

5.3.2HangerRodPull-through47

5.3.3BoxBeamLongitudinalWelds48

5.3.4BoxBeamtoClipAngleFilletWelds49

5.3.6DeterminationofSpanWeights51

5.4RemovalofSpecimens52

5.4.1CriteriaforSpecimenSelection52

5.4.2SpecimenRemoval52

5.4.4SpecimenStorageandHandling54

5.6Summary55

6.NBSSTRUCTURALTESTINGPROGRAM95

6.1Introduction95

6.2Background95

6.3Overview95

6.4TestSpecimenDescription96

6.4.1FullLengthBoxBeam96

6.4.2ShortBoxBeam96

6.4.3Fabrication96

6.5TestSetup98

6.6LoadingEquipment99

6.7Instrumentation100

6.8DataAcquisitionandReduction101

6.9LoadingSequence101

6.10NBSShortBoxBeamTests103

6.10.1Parameters103

6.10.2ShortBoxBeamSpecimens103

6.10.3WeldingProcess105

6.10.4WeldArea107

6.10.5OtherObservations108

6.10.6Summary110

X

TABLEOFCONTENTS(Continued)

Page

6.11NBSFull-LengthBoxBeamTestsIll

6.12TestsonWalkwayBoxBeamIll

6.12.1Full-LengthBoxBeamTestIll

6.12.2ShortBoxBeamTests112

6.14Conclusions113

7.NBSMATERIALSEVALUATIONPROGRAM155

7.1Introduction155

7.2InitialInspection155

7.2.1Visual155

7.2.2Radiography156

7.3.1NBSChannelSpecimens157

7.3.2WalkwayBoxBeams158

7.3.3WalkwayHangerRods158

7.3.4WalkwayBoxBeamLongitudinalWelds159

7.4.1BoxBeamWeldments159

7.4.2WalkwayHangerRods161

7.4.3Washers161

7.5ChemicalAnalysis162

7.6PropertiesofConcrete162

7.7Conclusions163

8.FRACTOGRAPHICANALYSIS193

8.1Introduction193

8.3WalkwayFractureReplicas194

TABLEOFCONTENTS(Continued)

Page

8.3.1GeneralObservations194

8.3.2BoxBeamLongitudinalWelds194

8.3.3Washer/NutContactArea195

8.3.4Washers195

8.3.5ClipAngleFilletWelds196

8.4.1Procedures196

8.4.2Results197

8.5Summary.198

9.STRUCTURALANALYSIS219

9.1Introduction219

9.2Loads219

9.2.1DeadLoad219

9.2.2LiveLoads221

9.3.1General222

9.3.2BoxBeam-HangerRodConnections222

9.3.3HangerRods223

9.3.4SummaryofAnalysis223

9.5WalkwayDeflections224

9.6EffectsofDynamicExcitation225

9.6.2SourcesofDynamicExcitation226

9.7Summary228

10.1Introduction239

Capacities239

10.4ProbableSequenceofCollapse241

Xll

TABLEOFCONTENTS(Continued)

Page

10.6QualityofMaterialsandWorkmanship242

10.7Summary243

11.SUMMARYANDCONCLUSIONS249

12.REFERENCES253

APPENDIXA-1

A6.10-A6.11A-2

A7.2-A7.5A-19

A7.6A-83

A9.2A-92

xiii I I I I XIV

1.INTRODUCTION

1.1BACKGROUND

thesecondfloorwalkway. investigation.

1.2OBJECTIVEANDSCOPEOFTHEINVESTIGATION

1 walkways

1.3ORGANIZATIONOFTHEREPORT

Thisreportisorganizedin12chapters:

inspectionreports. surfaces connectionsinthefourthfloorwalkway. 2 washer/nutcontactareas. significanceofdynamicexcitation. workmanship. reachedbytheNBSinvestigativeteam.quotesdbs_dbs17.pdfusesText_23
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