1. Assistant Professor, Gümüşhane Univ., Dept. of Civil Engineering, 29000, Gümüşhane, Turkey (corresponding author).
2. Assistant Professor, Karadeniz Technical Univ., Dept. of Civil Engineering, 61080, Trabzon, Turkey.
3. Professor Doctor, Karadeniz Technical Univ., Dept. of Civil Engineering, 61080, Trabzon, Turkey.