1. Ph.D. Candidate, Swinburne Univ. of Technology, Melbourne, VIC 3122, Australia; Lecturer, Kerbala Univ., Kerbala, Iraq (corresponding author).
2. Professor of Structural Engineering, Swinburne Univ. of Technology, Melbourne, VIC 3122, Australia.
3. Senior Lecturer, Swinburne Univ. of Technology, Melbourne, VIC 3122, Australia.