Grain leg towers are special spatial structures that are part of the complex of grain processing equipment. First of all, they are designed to support leg towers and place on them additional equipment for cleaning grain. In addition to significant wind loads, grain leg towers is under the actions of vibrations, their own weight and the weight of the grain being transported. The tower receives seismic loads. It is important to determine internal stresses to predict the possible collapse of the specified structure. Another important factor is that the failure of the grain leg tower threatens the food security of a particular region. Also, their construction is caused by necessity of installation of a flight of stairs for service of a head of a leg towers. The height of these structures reaches 40 meters, which requires careful design, manufacturability and installation. Therefore, it is important to accurately calculate the total interaction of several types of loads. Accurate analysis of the obtained data also is necessary to be performed role.