It is a very common application, especially in Turkey, to place parts of a RC building on cantilever beams in order to increase the storey areas above the entrance level. In many of these buildings, cracks of various sizes within the infill walls above the lowest level cantilever beams may develop in time. In this study, the reasons for the development of these cracks are investigated. It is experimentally found out that, one of the reasons of these cracks are the additional loads that are transferred from the upper level cantilever beams to those at the lower levels through the infill walls. The results of the study suggest that about 25% of the upper cantilever beam loads are transferred to the cantilever beam below. Useful recommendations for practice are presented.