1. Associate Professor, Bugshan Research Chair in Expansive Soils Dept. of Civil Engineering, College of Engineering, King Saud Univ., P.O. Box 800, Riyadh, Saudi Arabia 11421 (corresponding author).
2. Professor, Dept. of Civil Engineering, College of Engineering, Director Bugshan Research Chair in Expansive Soils, King Saud Univ., P.O. Box 800, Riyadh, Saudi Arabia 11421.
3. M.Sc., Researcher, Bugshan Research Chair in Expansive Soils, Dept. of Civil Engineering, College of Engineering, King Saud Univ., Riyadh, Saudi Arabia 11421.