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The_Collapse_of_Hartford_Coliseum - reports First LZA...

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The Collapse of Hartford Coliseum Mayankant Madhavkant ABSTRACT: In January 1978 the Hartford Arena experienced the largest snowstorms of its five –year life time and with a load crack there was the collapse of 91.44 X 109.73 meters (300 X 360 feet) space truss roof of the Hartford Coliseum, one of the largest space truss roofs in the United States. Fortunately, no body was injured in this incident. After the collapse, city officials hired three engineering consultant companies that were Lev Zetlin Associated (LZA), Inc., Loomis and Loomis, Inc., and Buck & Buck. to examine the cause of failure. The exact cause of failure of the roof differed in individual
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Unformatted text preview: reports. First, LZA concluded that the collapse was the effect of inadequate bracing in the top cord. Second, Loomis and Loomis, Inc. summarized that torsional buckling of the compression members was the cause of the failure. Thus, this article will reanalyze the case on the basis of Steel Construction Manual (AISC 2005) and tries to provide the in-depth discussion about which limit sate the space frame roof was controlled and will include the different mode of failure of the roof between original design assumption and actual design condition....
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