1. Assistant Professor, Anadolu Univ., Dept. of Civil Engineering, Eskisehir, 26555, Turkey; formerly, Civil Engineer, Earthquake Dept., Disaster and Emergency Management Presidency, Eskisehir Yolu 10. km Lodumlu, Ankara, Turkey.
2. Consulting Engineer, 10 Shinyrock Pl., The Woodlands, TX 77381.
3. Associate Professor, METU Civil Engineering ODTU, Ankara, 06531, Turkey (corresponding author).