1. Lecturer, Dept. of Civil Engineering and Natural Resources, Univ. of Canterbury, Christchurch 8140, New Zealand (corresponding author). ORCID: .
2. Professor, Dept. of Civil Engineering and Natural Resources, Univ. of Canterbury, Christchurch 8140, New Zealand.
3. Professor, Dept. of Structural and Geotechnical Engineering, Univ. of Rome La Sapienza, Via Eudossiana 18, Roma 00184, Italy.
4. Associate Professor, Dept. of Civil and Environmental Engineering, Colorado School of Mines, 206 Coolbaugh Hall, 1012 14th St., Golden, CO 80401.
5. Professor, Dept. of Civil and Environmental Engineering, Colorado State Univ., 700 Meridian Ave, Fort Collins, CO 80523-1372.