1. CONSTRUCT-GEO, Faculty of Engineering, Universidade do Porto (FEUP), Porto, Portugal
2. CONSTRUCT-GEO, Faculty of Engineering, Universidade do Porto (FEUP), Porto, Portugal (Corresponding author), e-mail: cristiana@fe.up.pt
3. Department of Civil, Environment & Geomatic Engineering, Faculty of Engineering Science, University College London, London, UK
4. Department of Civil Engineering, University of Bristol, Bristol, UK
5. Department of Civil and Environmental Engineering, University of Brasília, Brasília, Brazil
6. Faculty of Engineering, Hokkaido University, Sapporo, Japan