1. Lecturer, Dept. of Architecture, Built Environment and Construction Engineering, Polytechnic of Milan, piazza Leonardo da Vinci 32, 20133 Milano, Italy.
2. Full Professor, Dept. of Civil Engineering and Architecture, Univ. of Pavia, via Ferrata 1, 27100 Pavia, Italy.
3. Assistant Professor, Dept. of Civil Engineering and Architecture, Univ. of Pavia, via Ferrata 1, 27100 Pavia, Italy (corresponding author).