All articles tagged with #structural failure
A roof collapse at the Al-Khair Education Center in Peshawar, Pakistan, killed 34 people, including 33 children and one teacher, on Thursday. Over 40 others were injured. Authorities arrested the school owner and ordered a province-wide safety audit, citing structural weaknesses and ongoing construction as likely causes.
A private school roof collapsed in Peshawar, Pakistan, on Thursday, killing 34 people, including 33 children and one teacher. The incident at the Al-Khair Education Center in the Dir Colony neighborhood injured over 40 others. Rescue teams extracted at least 45 survivors from the debris, while Lady Reading Hospital declared an emergency to treat the casualties. Officials cited a weak structure and ongoing construction as potential causes, and the school owner has been arrested.
A school roof collapsed in Peshawar, Pakistan, on Thursday, killing at least 28 children and one teacher. Heavy rainfall triggered the failure of a two-story structure, leaving dozens injured and trapped. Authorities arrested the school owner and ordered a province-wide safety audit.
New York City's Department of Buildings has ordered a third‑party independent review of the Pfizer building's conversion in Midtown after a structural failure prompted a mass evacuation. The project added 14 floors to a 33‑story, about 667,000‑square‑foot tower, and did not require outside peer review under current thresholds, prompting calls from engineers to lower those thresholds, especially for older buildings. City officials say policy changes could be considered as the investigation continues to determine the cause, which could involve reinforcement issues, contractor error, or inspection gaps; the cost of a peer review is typically modest, around $100,000–$200,000.
A Midtown Manhattan high-rise formerly Pfizer HQ buckled due to extra load from added upper floors and was evacuated. Crews have installed temporary shoring and are stabilizing the structure while a city DOB-led investigation determines the cause and how to prevent recurrence. The developer says the building is stabilized and will be rebuilt without delaying overall delivery. Four nearby buildings remain evacuated, and unions are raising concerns about non-union labor on the project.
The final NIST report says the 2021 Surfside Champlain Towers South collapse began weeks earlier, with failing garage connections and an inadequately designed pool deck, worsened by later alterations that stressed an already weak structure. Noncompliant design with code standards, plus corrosion and leaks, left margins too narrow and set the stage for the disaster that killed 98 and spurred condo-reserve reforms.
Federal investigators found that Champlain Towers South’s collapse was preceded by a three-week period of progressive failures: cracks grew as the pool-deck garage columns failed and weight was redistributed to weaker adjacent slabs, ultimately causing part of the 12‑story building to fall in June 2021, killing 98 people.
A balcony at off-campus University of Cincinnati housing collapsed, injuring at least 10 people, with one critically, prompting an investigation into the possible role of weight and structural issues.
Federal investigators preliminarily concluded that the deadly 2021 Surfside condo collapse likely started in the pool deck due to design flaws and low safety margins, with the failure beginning more than seven minutes before the building fell, confirming earlier suspicions and highlighting longstanding structural issues.
A report by the National Academies of Sciences, Engineering, and Medicine has identified "zinc creep" as the cause of the Arecibo Observatory's radio telescope collapse in Puerto Rico. The zinc-filled sockets supporting the steel cables failed, leading to the platform's fall. The report suggests low-current electroplasticity may have accelerated the zinc's deformation. Recommendations include further study of the remaining components and better monitoring of aging facilities. The telescope, once a key research tool, will not be rebuilt, but a $5 million education center is planned for the site.
The collapse of the Arecibo Observatory in 2020 was primarily caused by long-term zinc creep-induced failure of the telescope's cable spelter sockets, as detailed in a report by the National Science Foundation and the University of Central Florida. The structural failure began after Hurricane Maria in 2017, which subjected the telescope to unprecedented stress. Despite inspections and delayed repairs, the hidden degradation of cable mechanisms was not identified, leading to the eventual collapse. The site will be transformed into an educational center, Arecibo C3, to inspire future astronomers.
The Arecibo Observatory in Puerto Rico, once the world's largest radio telescope, collapsed in December 2020 due to weakened infrastructure from zinc creep-induced failure in cable sockets and damage from Hurricane Maria. A recent report by the NSF and the University of Central Florida attributes the collapse to these factors, compounded by delayed and misdirected repairs. The observatory, known for significant astronomical discoveries, will be transformed into an education center focused on science, computing, and community.
A new report on the collapse of the Arecibo Telescope suggests that the failure of zinc spelter sockets, which anchored the support cables, was accelerated by a phenomenon called electroplasticity. This effect, potentially caused by electrical currents from the telescope's powerful transmitters, may have increased the plasticity of the zinc, leading to its deformation over time. The report also notes that the collapse might have been initiated by Hurricane Maria, which struck Puerto Rico 39 months prior. The findings highlight a unique failure mechanism possibly specific to Arecibo, warranting further investigation.
The Arecibo Observatory in Puerto Rico, once the world's largest radio telescope, collapsed in December 2020 due to weakened infrastructure from zinc creep-induced failure in cable sockets and damage from Hurricane Maria. A recent report by the NSF and the University of Central Florida attributes the collapse to these factors, compounded by delayed repairs. The observatory, known for significant astronomical discoveries, will be transformed into an education center focused on science, computing, and community.
Two bodies have been recovered from the Patapsco River after the collapse of Baltimore’s Francis Scott Key Bridge, with four others still missing; President Biden has approved $60 million in initial aid to rebuild the bridge, while questions remain about the collision and the structural failure; a construction worker miraculously survived the collapse despite not knowing how to swim; the Coast Guard and Army Corps of Engineers will work on making the port fully operational again; experts are investigating the structural failure and the impact on trade from the tragedy.