Appropriate for civil engineering courses in structural steel design, the fourth edition of this classic text provides background for designing steel structural elements using the 1993 AISC Load and Resistance Factor Design (LRFD) and the 1989 AISC Allowable Stress Design (ASD) Specifications. As in previous successful editions, a logical sequence of topics is featured, making complex material easy to understand. Emphasis throughout is placed on the explanation of the LRFD approach involving "limit states" and factored loads. To provide secondary coverage for the major topics--such as tension members, axially loaded columns, beams, beam-columns, and composite construction--the ASD formulations are developed from the strength-related concepts of LRFD. Throughout the book, all concepts are illustrated by numerical examples using LRFD; for the most important concepts, examples using ASD are also included. Many new end-of-chapter problems and references round out the text's presentation. Learning Aids Large Quantity of Numerical Examples * Problems on Design Procedures * Chapter Introductions Supplements For the Instructor: Solutions Manual, available only from your sales specialist.