Self-standing towers are spatial structures with three or four bases and are usually built with a maximum height of 120 to 180 meters. The structure of these towers is north of the main foundations and cross sections and horizontal restraints. Usually, in towers with a square cross-section (four legs), the angle between the sides of the cross section is 90 degrees, and in towers with a triangular cross section (three legs), it is 60 degrees. These types of masts are designed and produced in different wind surfaces and wind speeds. The pyramidal slope of these types of masts is a maximum of one degree and the mentioned slope can extend to the end section of the mast.