Abstract: A skeleton monolithic structure and method of assembly thereof employing the maxim of providing in that each beam of the structure in the longitudinal and transverse directions thereof, is divided into two channel-forming parts, thus providing ample space for the free threading of steel cables in order to effect the prestressing. The straight-line or linear cables run through the thus formed longitudinally and transversely extending channels, while in the locations for columns they are pulled through suitable holes previously prepared for this purpose in the columns, and which concurrently define the elevational positions of the cables on supports. In the first prestressing stage, once the mortar has hardened on the joints, the linear cables are tensioned so as to avoid the occurrence of friction.