structure and procedure for erecting concrete towers used in wind turbines in which said towers consist of sections , which in turn may each comprise a different number of segments or longitudinal sections . the procedure includes two differentiated cycles , which may take place alongside each other : the pre - assembly of each section of tower and their assembly . the sections may be pre - mounted on bases placed on the ground , with the segment in turn fitted with the help of struts and mechanical clamps . this procedure is extremely versatile in that it makes the best logistic use of the material , resources and requisite assembly times since the assembly procedures for each section can be developed alongside each other in the different wind farm towers , and also greater heights can be achieved than is traditionally possible .