1. Director, RISA GmbH, 55 Krumme Strasse, Berlin 10627, Germany.
2. Professor, Dept. of Civil Engineering, Istanbul Technical Univ., Maslak, Istanbul 34469, Turkey.
3. Managing Director, ERRA G.L.P., 67 Syngrou Ave., Athens 11754, Greece.
4. Private Consultant, RISA GmbH, 46 Vasileos Constantinou Ave., Athens 11635, Greece (corresponding author).
5. Associate Professor, Dept. of Civil Engineering, Istanbul Technical Univ., Maslak, Istanbul 34469, Turkey.