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The January 25, 2012 Vieira Fazenda office block collapse involved the progressive collapse of 3 commercial office buildings, split by R. Vieira Fazenda street in the municipality of Praça Floriano, Rio de Janeiro, Brazil. The three buildings involved were (from west to east): Building 1 (a 22-story〔Due to conflicting media reports, the number of floors were confirmed visually by looking at the (Google Maps Street View ) photograph of the site prior to collapse and counting the number of floors in Building 1.〕 building located at Av. Alm. Barroso, 6 - Centro, Rio de Janeiro, 20031-000, Brazil), Building 2 (a 23-story〔Due to conflicting media reports, the number of floors were confirmed visually by looking at the (Google Maps Street View ) photograph of the site prior to collapse and counting the number of floors in Building 2.〕 building located at Av. Alm. Barroso, 22 - Centro, Rio de Janeiro, 20031-000, Brazil) and Building 3 (a 6-story〔Due to conflicting media reports, the number of floors were confirmed visually by looking at the (Google Maps Street View ) photograph of the site prior to collapse and counting the number of floors in Building 3.〕 building located at Av. Rio Branco, 180 - Centro, Rio de Janeiro, 20040-003, Brazil). At 8:33 PM,〔The (CCTV recording ) of the collapse displays a time stamp of when the collapse took place.〕 the 23-story Building 2, began collapsing in the eastward direction towards the 6-story Building 3, which was located on the opposite side of R. Vieira Fazenda street. Building 2 was structurally connected to the adjoining 22-story Building 1, which caused it to pull Building 1 laterally eastward during its collapse. This extreme lateral shift caused the failure of enough support columns to result in the collapse of Building 1. As Building 2 continued its collapse in the eastward direction, its debris crashed through the roof and western load bearing wall of the 6-story Building 3, causing it to collapse as well. A total of 17 people were killed in the disaster. The initial collapse of the 23-story Building 2, was due to structural failure. Regulators said that any construction done violated local building codes as there were no construction permits on file for the building. == Aftermath == By January 31, 2012, Rio officials proposed the creation of new regulations, including periodic reports on building's structural conditions, and more rigorous enforcement of the current regulations. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「2012 collapse of Rio de Janeiro buildings」の詳細全文を読む スポンサード リンク
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