1984-1987
Americal Concrete Institute
American Concrete Institute
1987-1990
Americal Concrete Institute, Saudi Arabian Chapter
American Concrete Institute
1987-1990
American Society of Civil Engineers
American Society of Civil Engineers
1987-1990
American Society of Civil Engineers, Saudi Arabian Chapter
American Society of Civil Engineers
1987-1990
Saudi Society of Civil Engineers
Saudi Society of Civil Engineers
1987-1990
Saudi Councel of Engineers
Saudi Councel of Engineers