Observation Method Conference

The Observational Method (OM) remains a cornerstone of modern geotechnical practice, providing a framework to manage uncertainty through adaptive design and construction. The Observational Method Conference, hosted by TC206 at Imperial College, brings together perspectives from academia, consultancy, contracting, and client organisations to explore recent developments and challenges in implementing OM across disciplines. The event revisits the principles set out in CIRIA R185 and examines the need for updated guidance in light of digital transformation, real-time data integration, and evolving contractual environments. Keynotes from leading experts address statistical control of uncertainty, reliability of instrumentation, and lessons from tunnelling practice. Subsequent sessions highlight progress in real-time back analysis (RTBA), surrogate modelling, and digital platforms, illustrating how data-driven methods are reshaping decision-making during construction. The conference concludes with open discussions on the priorities for the forthcoming CIRIA guide. By fostering dialogue between technical committees—including TC220 (I&M), TC204 (Tunnels), and TC309 (Machine Learning)—the event aims to align traditional OM principles with emerging digital and risk-based approaches, ensuring its continued relevance for future infrastructure projects.