1. Head of Contracts Dept., Engineering Consultants Group, Bldg. 2, Block 10, Elsefarat District, Nasr City, Cairo 11765, Egypt; Ph.D. Student, Dept. of Construction Engineering, American Univ. in Cairo, Cairo 11865, Egypt (corresponding author). ORCID: .
2. Professor and Chair, Dept. of Construction, American Univ. in Cairo, Cairo 11865, Egypt. ORCID: .