1. Civil Engineering Department, Wollega University, PO Box No-395, Nekemte, Ethiopia (Corresponding author), e-mail: rath_rcpit@rediffmail.com, https://orcid.org/0000-0001-9675-9684
2. Civil Engineering Department, National Institute of Technology Raipur, G. E. Rd., Raipur, Chhattisgarh 492001, India