Abstract: In this paper, a simplified method is presented for analysing the structures that are not very long and have no harmonic similarity in the longitudinal direction. In this method, the redistribution of the loads has been considered in terms of compatibility condition of structural deformation.The application of the method is demonstrated by an interactive analysis of several space frames built on raft foundations resting on inhomogeneous soil media. It is shown that the results obtained from this simplified method are comparable with those of three dimensional finite element analysis.