Civil and Environmental Systems Engineering is designed for a junior- or senior-year course on systems analysis and economics as applied to civil engineering. This civil system/engineering economics course has evolved over roughly the last 30 years and draws on the fields of operations research and economics to create skills in problem solving. Because of the presence of several more advanced sections and sections focusing on applications in the book, it may also he useful as a text for first-year graduate courses that introduce students to civil systems. The second edition improves on an already classic book in its field by introducing new material and reorganizing portions of the previous edition. The new material is designed to enhance the student's learning experience by introducing modeling ideas and concepts at the outset, prior to teaching the mathematical process of model building. Network flow problems are given special treatment by highlighting their study separately from the general integer programming models that are considered. As well, the range of examples offered for the student's consideration is expanded not only as a motivational tool, but to illustrate the breadth of applications possible. A number of new end-of-chapter questions have been added to enhance the already well-received engineering economics chapters. REORGANIZED CHAPTERS Chapter 1: Now combines the historical development of systems analysis and the steps a model builder follows in structuring an optimization model. Includes verbal descriptions of settings where models can be employed. The student is challenged to identify, in the context of these settings, not only constraints and appropriate decision variables, but also the needed parameters and problem objectives. Chapter 2: Now consists of the general form of the linear programming problem and nine examples or stylized problems that are described in detail, as well as solved, to help introduce the student to the concept of optimization modeling. Chapter 6; All the major network flows concepts have been drawn together into one chapter. Chapter 7: The topics of integer programming, branch and bound, and the applications of integer programming are now contained in their chapter.Revelle, Charles S. is the author of 'Civil and Environmental Systems Engineering', published 2003 under ISBN 9780130478221 and ISBN 0130478229.