This well-known text has been fully updated to conform with AISC's 1993 LRFD Specification. While written primarily for undergraduates, this book will also help practicing engineers originally trained to use the ASD procedure to change to the LRFD method. The author has revised many of the existing end-of-chapter problems and has added several more. A problem-solving software package, included with each book, is tied to chapter exercises and allows students to specify parameters for particular problems and have the computer assist them.