The book "Calculation of flat frames by the method of displacement" by A. E. Belkina is an indispensable work for students, engineers and anyone interested in construction mechanics and design of structures. In this edition, the author offers readers a deep dive into the methodology for calculating flat frames, which makes it relevant for both novice professionals and experienced professionals seeking to refresh their knowledge. The book covers the basic principles and methods used in the calculation of flat frames, and provides readers with clear and accessible explanations of complex concepts. Belkin, with extensive experience in engineering, shares his knowledge, allowing readers not only to understand the theoretical aspects, but also to put them into practice. The book is structured in such a way that each section logically passes into the next, creating a holistic view of the subject. One of the key topics raised in the book is the displacement method, which is one of the most effective ways to analyze structures. This method allows not only to calculate internal forces and moments, but also to evaluate deformations, which is especially important in the design of buildings and structures. Belkin focuses on the practical aspects of the application of the method, which makes it especially valuable for practicing engineers. The book will be of interest not only to students of technical universities, but also to professional engineers, architects and designers who want to deepen their knowledge in the field of design calculation. It is suitable for those who are looking for clear and understandable explanations, as well as practical examples that will help to better absorb the material. The author’s style is clear and concise . Belkin is able to explain complex things in simple language, which makes his books available to a wide audience. His other well-known works, such as The Theory of Elasticity and Fundamentals of Design Calculation, have also been recognized for their practical focus and high scientific value. Readers familiar with his work will appreciate this publication, which continues the tradition of high-quality and accessible presentation of engineering knowledge. The topics raised in the book concern not only technical aspects, but also issues of stability and reliability of structures, which makes it especially relevant in the light of modern construction requirements. With the constant growth of cities and increasing load on infrastructure, knowledge of methods of calculation and design of structures becomes more important than ever The book "Calculation of flat frames by the method of displacement" is not just a textbook, but a real find for everyone who aspires to professional growth in the field of engineering. It will become a reliable assistant in study and work, as well as a source of inspiration for those who want to create safe and effective designs. If you are looking for quality literature on frame calculation, this book should definitely take its rightful place on your shelf.