1. Associate Professor, Dept. of Civil-Environmental Engineering and Architecture, Univ. of Parma, Parco Area delle Scienze 181/A, Parma 43124, Italy.
2. Consulting Engineer, via Zodiaco 72/1, Modena 41126, Italy.
3. Assistant Professor, Dept. of Civil-Environmental Engineering and Architecture, Univ. of Parma, Parco Area delle Scienze 181/A, Parma 43124, Italy (corresponding author).