Grading work is the foundation building project for the highway. This foundation is usually built only once. Hence, it is very important to build it properly. The foundation must be strong enough to assure that (1) the pavement will perform; (2) the highway can carry a certain number of traffic loads; (3) the unnecessary cost and construction delay due to failure are minimized. Just as when a person is building a dream home, he or she does not want to see a tilted floor and cracks all over the walls. It is certainly not desirable to have too many bumps and cracks on the highways. Unfortunately, the soils formation is seldom uniform.