The high quality of the construction provided by the ERTEK technology is based on the accurate construction of the structural skeleton. Accuracy derives from the use of industrial products (molds, joints etc) as guides for the production and the assembly of structural elements made of conventional materials (reinforced concrete). This makes possible to combine high accuracy, which characterizes the industrial production, with low cost of the conventional building. The production method makes sure the elimination of defects or dimensioning errors, which are common in conventional building. As the structural skeleton constitutes the basis of any other construction work (walls, finishing etc), its construction accuracy routes the construction accuracy of the building project as a whole. In addition, the emergence of space that hosts the electromechanical installation within the structural skeleton, which removes the need of post-construction installation activities, eliminates the possibility of a series of defects associated to such kind of activities. The accessibility of the installation eliminates the possibility of defects due to repair activities.