What Does EoR Stand For in Construction: Key Insights

June 11, 2024


Engineer of Record (EoR) in Tailings Storage Facilities (TSFs)

The Engineer of Record (EoR) is a pivotal figure in various public infrastructure projects, such as roads, bridges, buildings, and water dams. This concept is broadened to include Tailings Storage Facilities (TSFs) with some modifications due to the unique nature of these structures.

Challenges in Application to TSFs

Unlike conventional structures, TSFs do not adhere to a traditional construction process or schedule. They often employ an observational method, as described by Peck in 1969, which involves a construction period that can span several decades. This lengthy and evolving timeline presents significant challenges in maintaining consistent EoR oversight.

Mount Polley Incident

A notable example highlighting the implications of these challenges is the Mount Polley tailings dam failure in August 2014. Over four years, five different individuals served as the EoR, ultimately leading to lapses in oversight and resulting in a catastrophic failure. This incident prompted the mining industry and regulatory bodies to reassess the EoR concept for TSFs.

Current Practices and Concerns

Recent surveys reveal a myriad of concerns within the engineering community regarding EoR services in TSFs. These surveys help identify crucial areas needing improvement and guide the development of industry standards and practices for more effective EoR implementation.

Observational Method in TSFs

The observational method, as utilized in TSFs, is a dynamic approach that demands real-time monitoring and adjustments throughout the construction period. This method's inherent complexity necessitates a robust, continuous EoR presence to ensure the safety and integrity of the facility.

Regulatory Implications

The reassessment of the EoR role post-Mount Polley has significant regulatory implications. Future regulations may mandate stricter continuity and accountability measures to prevent such failures. This reassessment aims to enhance the EoR's efficacy and ensure the long-term stability of TSFs.

EoR Continuity and Accountability

Continuous and accountable EoR oversight is essential to avoid incidents similar to Mount Polley. A consistent EoR presence throughout the TSF's lifecycle can mitigate risks, ensure adherence to safety standards, and maintain structural integrity over time.


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