1. Lviv Polytechnic National University , Department of Building Constructions and Bridges , 12 st. S. Bandera , Lviv , , Ukraine
2. Czestochowa University of Technology , Faculty of Civil Engineering , 69 st. Dabrowskiego , Czestochowa , Poland
3. Lviv Polytechnic National University , Department of Highways and Bridges , 12 st. S. Bandera , Lviv , , Ukraine