the invention relates to an assembly system used to form insulating floors , in which two types of elements are coupled to one another , namely : hollow prismatic floor modules including one face which forms the load - supporting useful surface and containing cylindrical elements for receiving coupling elements ; and coupling elements comprising cross - shaped elements with u - sections forming the arms thereof , intended to receive the vertical faces of the floor modules , and posts which are coupled to the corresponding hollow cylindrical elements of the floor modules to be joined . the geometric configuration of the modules and the coupling elements ensure that the load on the assembled floor is transmitted to the ground through the vertical walls of the prismatic body , the coupling elements and a central cylindrical load body . the modules can be made from insulating material and be provided with a non - slip useful surface .