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Harbor Cay Condominium collapse
The Harbor Cay Condominium was a five-story flat plate residential development project in Cocoa Beach (Brevard County, Florida, United States) that collapsed during construction on March 27, 1981. Eleven workers were killed and 27 injured.
The building, being constructed by the Univel Corporation of Cocoa Beach, collapsed as workers were completing its framework by pouring concrete for the roof.〔 〕
The accident led to more rigorous enforcement of engineering and construction codes in Florida and elsewhere.
==Cause==
The collapse was due to numerous errors in design and construction. The concrete slabs were only 200 mm (eight inches) thick and should have been 280 mm (eleven inches) thick to satisfy the American Concrete Institute's Building Code minimum. The plastic chair spacers used to support the slab steel were 108 mm (4 ¼ inches) high, which coupled with the thin slabs led to a very small effective depth.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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