1. Assistant Professor, Dept. of Civil Engineering, Univ. of Harran, Şanlıurfa 63000, Turkey (corresponding author).
2. Research Assistant, Dept. of Civil Engineering, Univ. of Cukurova, Adana 01330, Turkey.
3. Associate Professor, Dept. of Civil Engineering, Univ. of Cukurova, Adana 01330, Turkey.
4. Professor, Dept. of Civil Engineering, Univ. of Cukurova, Adana 01330, Turkey.