Includes bibliographical references (p. 169-173).

1. Evaluate impact of differences in thicknesses for ductile iron pipe in "thickness" and "pressure" design classes -- 2. Repair event analyses of ductile iron pipes -- 3. Monitoring corrosion of ductile iron pipes with electrical resistance probes -- 4. Exhumation, scanning, and analysis of corrosion pit data for ductile iron pipes -- 5. Sampling and making inferences on pipe condition -- 6. Summary and conclusions -- Appendix A. Pipe scanning, hardware, method, and process -- Appendix B. Pit population analysis -- Appendix C. Ring population analysis-pit-area and pit-volume -- Appendix D. Estimation of missing resistivity data in Calgary -- Appendix E. Ring population analysis with soil properties -- Appendix F. Likelihood ratio statistic -- Appendix G. Likelihood ratio confidence bounds -- Appendix H. Exploratory analysis of buried infrastructure data using computational intelligence techniques -- Appendix I. Return-period computations.