MEXICO CITY — Poorly positioned studs, clear design flaws and poor welding led to a collapse within the capital’s metro system final spring that left 26 individuals useless and scores injured, the legal professional common for Mexico Metropolis stated Thursday in releasing the outcomes of a monthslong investigation.
The findings, detailed throughout a information convention, aligned with a number of of the conclusions of a New York Occasions investigation, which discovered that poor set up of the metallic studs was central to the lethal Could 3 accident.
The metallic studs have been key to the entire building, making a composite unit between metal beams and concrete slabs. As soon as the studs failed, all the construction grew to become fatally weakened, finally resulting in the collapse.
The studs “connecting the concrete slab with the metallic beams have been misplaced,” stated Ulises Lara López, spokesman for the legal professional common’s workplace. “Within the sections the place the concrete slabs have been indifferent from the beams, all of the studs have been poorly put in at irregular patterns.”
Such elementary flaws, Mr. Lara stated, couldn’t have been discovered via routine inspection or prevented via common upkeep.
In releasing her workplace’s findings on Thursday, Legal professional Basic Ernestina Godoy Ramos described the report as “a deep, critical, scientific investigation, carried out by consultants.”
An impartial report issued earlier this 12 months by the Norwegian threat administration firm DNV additionally discovered critical building errors, together with with the location and welding of metallic studs. Mexico Metropolis’s authorities had employed DNV to look at the causes of the crash.
The crash of the metro has set off political shock waves, implicating among the strongest individuals in Mexico, together with International Minister Marcelo Ebrard, who was the mayor of Mexico Metropolis when the road was constructed.
Mr. Ebrard and the present mayor, Claudia Sheinbaum, are each anticipated to hunt the presidency within the 2024 election.
The metro part that collapsed was constructed by Carso Group, an enormous conglomerate owned by considered one of Mexico’s wealthiest and strongest males, Carlos Slim, an in depth ally of President Andrés Manuel López Obrador. (Mr. Slim was additionally as soon as a big shareholder of The New York Occasions Firm.)
Ms. Godoy stated her workplace would provoke felony proceedings in opposition to individuals deemed chargeable for the collapse, though she didn’t establish any particular person. “Simply as our mandate is justice, our precedence has been and can proceed to be the victims,” she stated.