Dynamics of Structures (4th Edition) delves into the theory of structural dynamics and its practical applications in earthquake engineering. Designed for senior-level and graduate courses, this comprehensive textbook requires no prior knowledge of structural dynamics, making it accessible for both academic use and self-study by students and professional engineers. Spanning 992 pages, the book covers a wide range of topics essential to understanding the dynamic behavior of structures during seismic events. With a focus on earthquake analysis, response, and design, this edition offers detailed and integrated content, ensuring that readers can effectively apply theoretical knowledge in real-world scenarios.