by Chris Hendrickson, Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA l52l3 Copyright C. Hendrickson 1998
First Edition originally printed by Prentice Hall, ISBN 0-13-731266-0, 1989 with co-author Tung Au.
Second Edition prepared for world wide web publication in 2000.
Version 2.1 prepared Summer, 2003.

This book is provided on the worldwide web as a service to the community of practitioners and students. Reproduction for educational purposes is permitted with appropriate citation.