Essential knowledge of steel-framed structure design is a cornerstone for architectural, civil, and structural engineers, as well as for students planning careers in structural design and construction. Structural Steel Design, Fourth Edition delivers a comprehensive understanding of structural steel design, starting with the fundamentals and progressing to the design of a complete structural system. It emphasizes not just the individual steel elements or components but their integration within the broader context of the entire structure. By working through the chapters and corresponding design project tasks, readers will complete the design of a full steel structure, allowing them to grasp the connections between discrete components and the larger system. This approach reinforces the importance of seeing the "big picture" in structural design. Encouraged by the American Institute for Steel Construction, this book goes beyond traditional textbook exercises by offering real-world examples, project-based exercises, and open-ended problems that challenge the reader to make decisions and navigate the iterative nature of structural design. Practical details and real-world end-of-chapter problems reflect the types of challenges encountered in professional engineering practice, making this text not just an academic resource but a practical guide for aspiring engineers.