1. Civil Engineering Dept., Istanbul Aydın Univ., Beşyol, İnönü Cd. No:38, 34295 Küçükçekmece/İstanbul, TR (Corresponding author), e-mail: rezaahmadi@aydin.edu.tr
2. Civil Engineering Dept., Middle East Technical Univ., Dumlupınar Bulvarı No:1 06800 Çankaya/Ankara, TR