1. Assistant Professor, Dept. of Civil Engineering and Architecture (DECivil)-IST, Section of Construction, Technical Univ. of Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
2. Full Professor, DECivil–IST, Section of Construction, Technical Univ. of Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal (corresponding author).
3. Full Professor, Dept. of Civil Engineering (DEC)-FEUP, Section of Civil Constructions, Univ. of Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal.