There are many cases the use of shallow foundations doesn’t fit for bearing capacity considerations. In some of these cases, there are soil layers with high strength properties that exist at shallow depths underlain by soil layers with less strength, and the continuous, suitable layer located at great depth. In these cases, it would be useful to use short piles rests on the functional shallower soil layers as bearing layer. These layers are either stiff clay layers with high shear strength or sand layers with high friction resistance or a mixture of both. Due to the presence of weak soils under the bearing layer, this research focuses on the behavior of pile that rests in sand underlain by clay soil. Two sites selected for this study, the first is located in Mansoura city while the other is in Gamasa, and both sites located in the Nile Delta Region of Egypt. In situ and laboratory tests were carried out to determine soil properties. Static load tests conducted on several piles. Numerical simulation for the static load test then performed for each case.