Tomorrow, the nation will mark one of the most painful anniversaries in Thailand's recent history.
Last year, a 33-storey office building under construction in Bangkok's Chatuchak district collapsed within seconds after seismic tremors were felt across Thailand. At 12.50pm, the structure -- owned by the State Audit Office (SAO) -- crumbled in just eight seconds.
The cause of the collapse remains unresolved. Among hundreds of thousands of buildings in the capital, the SAO project -- built at a cost of 2.2 billion baht in taxpayer funds -- was the only high-rise to fail catastrophically. Older buildings, some more than three decades old, sustained only minor, repairable damage.
The human cost was devastating. Ninety-five construction workers lost their lives under the debris.
Today, the site stands vacant, raising questions about its future and the legacy of the tragedy. Last week, the SAO announced it would abandon plans to rebuild its office on the plot. While this may be seen as a step forward, it does little to address the central issue of accountability.
Over the past year, SAO executives have largely maintained that their role was limited to approving designs and monitoring progress based on recommendations from hired consultants. Such claims have done little to reassure the public.
Responsibility for the collapse extends beyond contractors and engineers. The project involved a joint venture between Italian-Thai Development Plc and China Railway No.10 (Thailand), along with design and consultancy firms. However, scrutiny has also reached state officials.
The Department of Special Investigation (DSI) has implicated SAO executives and officials for alleged violations of procurement law and forwarded its findings to the National Anti-Corruption Commission (NACC) in June last year. Police have also filed charges against 23 executives and engineers linked to contractors and related firms.
Yet progress has been slow. The NACC has not indicated when it will proceed with its inquiry, citing the need to await court rulings. This cautious approach risks reinforcing a perception of delay and inaction.
Meanwhile, conflicting findings from various investigations have added to public confusion. Preliminary studies have cited possible causes ranging from substandard materials to last-minute design changes. Police have also reported forged signatures on construction approval documents. Such inconsistencies raise concerns that key perpetrators -- particularly those in positions of influence -- may evade accountability.
The broader question is what Thai society has learned from this tragedy. The answer, so far, appears to be very little.
The past year has seen several serious accidents at public construction sites, including projects linked to the same contractor involved in the SAO building. These incidents point to persistent weaknesses in oversight and safety enforcement.
As the anniversary approaches, familiar scenes are likely to unfold -- merit-making ceremonies, public expressions of regret, and renewed promises from political leaders to improve safety standards. Without meaningful action, such pledges risk becoming routine.
Unless those responsible are brought to justice, the collapse of the SAO building will stand as yet another reminder of systemic failures in public safety and governance.
