Unique in its focus on the underlying structural systems of historic buildings, bridges, dams, towers and tunnels, this book introduces the concept of preservation to civil and structural engineers, and guides them through the entire process of a preservation project. From building codes and environmental regulations, to historic research and preservation board approval, to financial planning and structural investigation, this is the first book to present the entire process of historic preservation of structural systems from the engineer's perspective. Including numerous case studies and interviews with engineers, construction managers, and preservation board officials, the book will provide unique insight into the work civil and structural engineers are doing to preserve important buildings and infrastructure.