1. Honorary Research Associate, Dept. of Civil, Environmental and Geomatic Engineering, EPICentre, Univ. College London, Chadwick Bldg., Gower St., London WC1E 6BT, UK (corresponding author).
2. Research Associate, Dept. of Civil, Environmental and Geomatic Engineering, EPICentre, London WC1E 6BT, UK.
3. Professor, Dept. of Civil, Environmental and Geomatic Engineering, EPICentre, London WC1E 6BT, UK.
4. Professor, Dept. Civil, Environmental and Geomatic Engineering, EPICentre, London WC1E 6BT, UK.
5. Professor, CONSTRUCT-LESE, Faculty of Engineering, Univ. of Porto, Porto 4200-465, Portugal.