Advances in Architectural, Civil and Environmental Engineering : 31st Annual PhD Student Conference on Applied Mathematics, Building Technology, Geodesy and Cartography, Landscaping, Theory and Environmental Technology of Buildings, Theory and Structures of Buildings, Theory and Structures of Civil Engineering Works, Water Resources Engineering. October 13th 2021, Bratislava, Slovakia - Bisták, Andrej, 1990- (Spektrum STU, 2021)