"The main incentive for writing the current volume has been the realization that, despite the importance of the subject and the publication of thousands of papers on the strengthening of existing structures (see the literature review in a subsequent section of this Chapter), there are very few complete books or reports with specific guidelines on the strategy for structural retrofit. The present document attempts to provide structural engineers a thorough insight on seismic assessment and strengthening, specifically for existing reinforced concrete buildings, providing information on the different available strengthening techniques, and on the methodologies and procedures that should be followed for the execution of the assessment of an existing or strengthened structure. More importantly, it gives detailed directives on the strategy for the strengthening interventions; that is which method(s) to use, when, how and why."-- Provided by publisher.