1. Ph.D. Student, School of Civil and Environmental Engineering, Addis Ababa Univ., P.O Box 385, Addis Ababa, Ethiopia (corresponding author). ORCID: .
2. Associate Research Professor, School of Civil and Environmental Engineering, Univ. of Connecticut, Storrs, CT 06269.
3. Associate Professor, School of Civil and Environmental Engineering, Addis Ababa Univ., P.O Box 385, Addis Ababa, Ethiopia. ORCID: .