Author Description

This manual, Existing Sewer Evaluation and Rehabilitation, Second Edition, provides general guidance and serves as a source of information in the evaluation and rehabilitation of existing sewers. Recent technological advances, such as high resolution closed-circuit television, in addition to improved analytical methods and materials, make rehabilitation of existing sewers a cost-effective alternative to relief sewer construction. With these advances in mind, this manual explores three major topics: sewer evaluation and monitoring, sewer rehabilitation-methods and materials, and quality assurance. After a short explanation of the purpose and scope of the manual, chapters 2, 3, 4, and 5 discuss techniques used for evaluation of existing sewers. The techniques covered are the general approach, methods of structural evaluation, and methods of infiltration and inflow evaluation. In addition, the impact of combined sewer overflow on pollution are described. Chapter 6 discusses sewer flow, quality monitoring, and sewer system hydraulics. Methods and materials used for pipeline rehabilitation are presented in chapters 7 and 8. The final chapter discusses the quality assurance of long-term performance in sewer rehabilitation. A general formulae section and glossary are appended.