Affiliation: | 1Assistant Professor, Civil Engineering Dept., Aswan Faculty of Engineering, South Valley Univ., Aswan, Egypt; formerly, Ph.D. Candidate, Div. of Built Environment, Hokkaido Univ., Sapporo 060-8628, Japan (corresponding author). E-mail: drkhalid_farah@yahoo.com 2Associate Professor, Div. of Built Environment, Hokkaido Univ., Sapporo 060-8628, Japan. E-mail: ysato@eng.hokudai.ac.jp
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