An image of a green park with a small lake in Bangkok, featuring a high-rise under construction in the background.

On March 7, 2025, a 32-story office tower under construction in the Chatuchak district of Bangkok collapsed. The tower was being built for the State Audit Office (SAO). This collapse was the only one in the capital that day, raising many questions about the causes and circumstances surrounding the incident. The Thai government has highlighted ongoing investigations to determine the true reasons for the Bangkok tower collapse.

Causes of the Collapse

Several factors may have contributed to the collapse, according to the initial investigations. The main causes being investigated are as follows:

  1. Technical Errors in Design and Execution
    Thai Prime Minister Paetongtarn Shinawatra blamed technical errors in the design or construction process. She emphasized that the government is investigating all technical aspects of the project to determine if there was any negligence on the part of the contractors.
  2. Use of Substandard Materials
    “Investigators discovered that some materials used in the construction, such as steel, might have been substandard. Thailand’s Ministry of Industry reported that a steel sample taken from the site failed a quality test. The steel came from a factory in Rayong, which authorities shut down in December 2024 due to production issues.
  3. The Earthquake as a Contributing Factor
    The earthquake that hit Myanmar was the immediate cause of the collapse. However, it is possible that the design flaws or the use of weak materials made the building unable to withstand the earthquake’s impact, leading to its disintegration.

Investigations

Following the demise of the Bangkok tower, the Thai government launched investigations into various aspects:

  • Investigators examined the steel used: in the building and found that some materials did not meet the required standards.
  • Investigation into the Contractors: There is an ongoing investigation into the construction projects awarded to China Railway No. 10 Engineering Group, the local subsidiary of China Railway Group, to determine if there was any fault in the construction process.
An image showing a collapsed building in Bangkok after the earthquake, with rescue teams on-site.
InvestigationsAn image of the collapsed building in Bangkok, where rescue teams are searching for survivors under the rubble after the tower’s collapse on March 7, 2025.

Reactions

The Thai government quickly moved to review all ongoing construction projects to prevent similar incidents from occurring in the future. Additionally, new building and safety standards are being implemented, especially for large-scale projects involving international companies. This move comes in the wake of the recent Bangkok tower collapse.

Summary Table

ItemDetails
Project NameOffice Tower in Chatuchak, Bangkok
Cause of CollapseTechnical errors, use of substandard materials, earthquake impact
Casualties15 dead and 72 trapped under the rubble
ContractorsChina Railway No. 10 Engineering Group, Italian-Thai Development
InvestigationsMaterial testing (steel), design flaws, review of projects
Government ActionsEnhanced building and safety standards, review of large projects

Quotes:

“A comprehensive investigation into the project has been launched to determine the real causes behind the tower’s collapse” — Prime Minister Paetongtarn Shinawatra

“The steel used in the construction failed the quality test, and it was sourced from a factory that had been previously shut down” — Ministry of Industry of Thailand

Conclusion

The Bangkok tower collapse is a tragic incident, and the ongoing investigations into the causes could provide solutions for the future to ensure the safety of major construction projects in Thailand. It is clear that the collapse was likely caused by a combination of factors, including design flaws and substandard materials.

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