The management of existing building structures is part of the daily tasks for civil engineers and architects. This book provides the necessary knowledge of various methods for assessing the condition and evaluating components and load-bearing structures, as well as planning maintenance and strengthening measures. An overview of the development of design rules and material properties in reinforced concrete construction aids in the evaluation of existing documentation. Numerous illustrative examples make the book an indispensable guide for planning and a valuable companion for study. For the second edition, the content has been completely updated in relation to the current technical regulations. Additionally, some sections have been thoroughly revised for better understanding, and new sections have been added.