In the period of construction of the factory 1973 -1976, Carbonell Figueras, S.A. got an agreement to execute the civil work of the assembly line. From that date and by annual contracts we have continuously performed these works, which vary a lot according to the characteristics of the equipment that has to be installed. In some cases reaching a great complexity, as in the installation of the new 4 shafts press, which needed the application of a special technology to demolish 1,200 m³ of concrete with an elevated number of framework. Within the 6 days of installation, the work was continuously done.