The book "Calculation of a single-chain portal support on deferrals" by B. L. Nikolaenko is a unique publication that will become an indispensable assistant for engineers, architects and students studying building structures. In his work, the author is deeply immersed in the theory and practice of designing single-chain portal supports, which makes the book not only a textbook, but also a practical guide for specialists working in the field of civil engineering. In. L. Nikolaenko, known for his research in the field of construction mechanics and structures, offers readers a detailed analysis of methods for calculating single-chain portal supports on pulleys. It highlights key aspects of design, including material selection, load calculation, and structural stability. The book is filled with practical examples and tasks, which allows the reader not only to assimilate the theoretical material, but also to apply it in practice. This work will be especially interesting for students of technical universities, graduate students and young professionals who are just starting their way in the world of engineering. In addition, the book can attract the attention of experienced engineers who want to update their knowledge and get acquainted with modern methods of calculation and design. Readers interested in building technology, architecture, and design will find much useful information in this book that will help them broaden their horizons and deepen their understanding of complex engineering challenges. The topics raised in the book cover a wide range of issues related to the design and calculation of structures. The author considers not only theoretical aspects, but also practical problems faced by engineers in the process of work. Particular attention is paid to safety and sustainability of structures, which makes the book relevant in the light of modern construction requirements. With increasing demands on the reliability and durability of buildings and structures, such knowledge is becoming particularly valuable. Nikolaenko's style is distinguished by clarity and accessibility of presentation, which allows the reader to easily perceive even the most complex topics. It uses visual illustrations and diagrams, which helps to better understand the concepts presented. The book is written taking into account current standards and norms, which makes it especially useful for practitioners. In addition to the "Calculation of single-chain portal support on the pulleys", B. L. Nikolaenko is the author of several other well-known works on construction mechanics and design. His research and publications have gained recognition in the professional community, and this book will not be an exception. If you are looking for a high-quality and informative publication that will help you understand the intricacies of designing single-chain portal supports, then “Calculation of single-chain portal support on pulleys” is what you need. The book will become a reliable assistant for both students and experienced engineers seeking to improve their skills and master new methods of work. Do not miss the opportunity to immerse yourself in the world of engineering and discover new horizons in design!