1. Professor, School of Architecture and Design, Univ. of Camerino, Viale della Rimembranza, 63100 Ascoli Piceno, Italy.
2. Assistant Professor, Dept. of Civil Engineering, Buildings and Architecture, Marche Polytechnic Univ., Via Brecce Bianche, 60131 Ancona, Italy.
3. Associate Professor, School of Architecture and Design, Univ. of Camerino, Viale della Rimembranza, 63100 Ascoli Piceno, Italy (corresponding author).
4. Structural Engineer, Building and Telecommunications Direction, Univ. of Pisa, Lungarno Pacinotti 43–44, 56100 Pisa, Italy.
5. Associate Professor, Dept. of Civil and Industrial Engineering, Univ. of Pisa, Largo Lucio Lazzarino 1, 56122 Pisa, Italy.