1. Lecturer, Dept. of Construction Engineering, Technical Univ. of Catalonia (UPC), C/Colom 11, Ed. TR5, Terrassa, 08222 Barcelona, Spain (corresponding author).
2. Associate Professor, Dept. of Construction Engineering, Technical Univ. of Catalonia (UPC), C/Colom 11, Ed. TR5, Terrassa, 08222 Barcelona, Spain.
3. Assistant Lecturer, Dept. of Construction Engineering, Technical Univ. of Catalonia (UPC), C/Colom 11, Ed. TR5, Terrassa, 08222 Barcelona, Spain.