Recent Progress in Steel and Composite Structures includes papers presented at the XIIIth International Conference on Metal Structures (ICMS 2016, Zielona Gora, Poland, 15-17 June 2016). The contributions focus on the progress made in theoretical, numerical and experimental research, with special attention given to new concepts and algorithmic procedures, and to background knowledge as well as the development and implementation of rules and recommendations for codification worldwide. In addition to the five keynote papers the book contains 62 two-page extended abstracts of individual contributions delivered by 164 Authors and Co-authors from 13 countries of four continents. The CD containing all full-length papers is an attachment to the conference book. Recent Progress in Steel and Composite Structures is a useful reference source to academics, researchers, graduate students and practicing engineers.