This book gathers the latest advances, innovations, and applications in the field of civil, environmental and construction engineering, as presented by researchers and engineers at the XXX Annual Russian-Polish-Slovak Seminar Theoretical Foundation of Civil Engineering (RSP), held in September 2021.Co-organized by six universities from Russia, Poland and Slovakia, the event covered diverse topics such as structural mechanics; building structures; geodesy and geotechnics; transport and environmental issues in civil engineering.The contributions, which were selected by means of a rigorous international peer-review process, highlight numerous exciting ideas that will spur novel research directions and foster multidisciplinary collaborations.