Risk, the management of risk, reliability and related issues are coming increasingly to the fore in civil engineering. There is growing awareness that most decisions are made under uncertainty, and therefore rational, transparent and adequate approaches are required. This is particularly so in the field of ground engineering, where the vagaries of geology and the interference by the exploratory process, compounded with uncertainties in failure models, produce a field where there is great dependence on expert judgement. This book has been specially divided into studies on understanding, recognizing, evaluating and managing risk, and the issues are discussed both in theory and in practice. The design issues affecting risk are examined, and the types of ground conditions and their relative risks are compared - through both research and case histories, to make this an invaluable volume for anyone involved in ground engineering.