1. Prof., Dept. of Constr. Engrg. and Mgmt., Coll. of Envir. Des., Box 680, King Fahd Univ. of Petr. and Minerals, Dhahran 31261, Saudi Arabia.
2. Assoc. Prof. and Dean, Coll. of Envir. Des., Box 1978, King Fahd Univ. of Petr. and Minerals, Dhahran 31261, Saudi Arabia. E-mail: jannadi@kfupm.edu.sa
3. Grad. Student, Dept. of Constr. Engrg. and Mgmt., Coll. of Envir. Des., King Fahd Univ. of Petr. and Minerals, Dhahran 31261, Saudi Arabia.