The behavior of the strip footing on sand was deeply studied in many publications. They were trying
to improve this behavior through many techniques. These improvements include the using of
geogrid and geotextile reinforcement, skirts on the sides of the footing to elongate the contact
surface of the footing with soil. None of these studies had implemented in the effect of the contact
shape of the footing on its behavior. In this present experimental study, it is intended to observe the
behavior of the convex strip footing on sand with different strip footing contact shapes. A series of
experiments using different convex strip footing contact shapes, are carried out on sandy soil. The
results showed that the increase in the strip footing contact areas, did not increase the bearing
capacity, but decreases the ultimate bearing capacity load from about 30% to 60%. Also with sever
convex curve, the ultimate load decreases seriously.