The truss foundation settlement, due to the light weight of these structures and their strip construction with some problems like a non-uniform settlement or the assessment of these foundations loading against conventional loading, is among the important problems that are considered in the behavior type and the interaction of the foundation with soil. This research studies the non-uniform soil beds, non-uniform settlement in foundations and its effect on the structure and numerical analysis and modeling in the ABAQUS software. In the following, the conventional loading including snow and wind loadings will be studied for some conditions of these structures with their foundations. In the present research, model behavior of truss sub-structure foundation is studied in three different loadings, three different widths, and three different depths and the following results are obtained. The effect of centrifugal forces (like wind) is almost ineffective for foundations. It seems that deepening the foundation is the best way for settlement decrease in normal settlement reduction. By increasing the foundation depth for about 25 cm, the normal settlement has decreased by about four times in the modeled samples. The effect of soil type on the settlement of software models was impressive and by decreasing the elastic modulus of soil, the foundation settlement will increase by about 25 percent.
