1. Professor, Dept. of Construction Engineering, Univ. Politècnica de Catalunya, C/Colom, 11, Ed TR-5, 08222 Terrassa, Barcelona, Spain (corresponding author).
2. Ph.D. Student, Dept. of Construction Engineering, Univ. Politècnica de Catalunya, C/Colom, 11, Ed TR-5, 08222 Terrassa, Barcelona, Spain.
3. Lecturer, Dept. of Construction Engineering, Univ. Politècnica de Catalunya, C/Colom, 11, Ed TR-5, 08222 Terrassa, Barcelona, Spain.
4. Professor, Dept. of Construction Engineering, Univ. Politècnica de Catalunya, C/Colom, 11, Ed TR-5, 08222 Terrassa, Barcelona, Spain.