Mexico City — Inadequate placement of studs, obvious design flaws, and inadequate welding caused the capital’s subway system to collapse last spring, killing 26 people and injuring scores, Mexico City said. The Attorney General said Thursday that he announced the results of the investigation over several months.
The findings detailed at the press conference are consistent with some of the conclusions of the New York Times investigation, revealing that inadequate installation of metal studs is central to the May 3 fatal accident. rice field.
Metal studs were the key to the overall structure, creating a composite unit between the steel beam and the concrete slab. When the studs broke, the entire structure was fatally weakened, eventually leading to collapse.
“The studs that connect the concrete slabs to the metal beams were misplaced,” said Ulysses Lara Lopez, a spokesman for the Attorney General’s office. “In the section where the concrete slab was removed from the beam, all the studs were poorly installed in an irregular pattern.”
According to Lara, these fundamental flaws could not be found by regular inspection and could not be avoided by regular maintenance.
In announcing the findings of her office on Thursday, Prosecutor Ernestina Godoy Ramos described the report as “a deep, serious, scientific investigation conducted by experts.”
An independent report published earlier this year by Norwegian risk management firm DNV also found significant structural errors such as metal stud placement and welding. The Mexican City government has hired DNV to investigate the cause of the crash.
The subway crash caused a political shock wave that involved some of Mexico’s most powerful people, including Foreign Minister Marcelo Evrad, who was the mayor of Mexico City when the line was built.
Both Mr. Evlard and the current mayor, Claudia Sheinbaum, will be president in the 2024 elections.
The collapsed metro section was built by Carlos Slim, a vast conglomerate owned by Carlos Slim, a close ally of President Andres Manuel Lopez Obrador, one of Mexico’s wealthiest and most powerful men. .. (Mr. Slim was once a major shareholder of The New York Times Company.)
Mr Godoy said her office would file criminal proceedings against those who were deemed responsible for the collapse, although they did not identify the individual. “Our priority remains victims, just as our mission is justice,” she said.