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Report Blames Poor Welds For Mexico City Subway Collapse

The court sought the law ministry’s response after going through a statement by the World Health Organisation, which has declared virginity testing as unscientific, medically unnecessary and unreliable.

The court sought the law ministry’s response after going through a statement by the World Health Organisation, which has declared virginity testing as unscientific, medically unnecessary and unreliable.

Poorly welded, badly located and completely missing studs that joined steel support beams to a concrete layer supporting the track bed were to blame for the May 3 collapse of an elevated segment of Mexico Citys metro that killed 26 people, experts concluded in a report released Tuesday.

MEXICO CITY: Poorly welded, badly located and completely missing studs that joined steel support beams to a concrete layer supporting the track bed were to blame for the May 3 collapse of an elevated segment of Mexico Citys metro that killed 26 people, experts concluded in a report released Tuesday.

The Mexico City government hired Norwegian certification firm DNV to find the causes of the deadly accident. The final report arrived at similar conclusions as the firms preliminary report in June.

The sloppy installation of the studs created a situation where the elevated structure was working as two independent parallel beams, a concrete beam and steal beam, that experienced loading conditions for which they were not designed, the report said. That distorted the framework, leading to fatigue cracks that reduced the structures ability to bear weight.

Other possible factors included deficiencies in the beams themselves and the design of the framework, the report said.

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first published:September 08, 2021, 00:45 IST