Risk is related to the magnitude and uncertainty of an output (consequence or outcome); outputs take on different identities in different disciplines and situations. Risk is peculiar to each stakeholder and the measurement scale for risk depends on the stakeholder’s value system. Risk management provides a way of addressing the issues associated with the magnitude and uncertainty of outputs. This book provides a distinctively rational treatment of risk and risk management, based on a systems approach. The book’s treatment applies to all disciplines and sets out the principles of risk and risk management as well as looking at a range of applications and more specialist tools and approaches. The book: Develops a risk framework through a systems approach Offers a challenging and fresh approach for infrastructure engineering, construction and project management in general The book will suit students and practitioners alike.