Strength and lightness are the sensations you feel inthe immediate vision of the steel structures used in projects of higharchitectural and engineering value; the quest for new forms and the need forflexibility and "freedom" of the spaces enhance the use of steel inmodern construction that will reduce the overall dimensions of the structuresand broadening the free lights. The ever present need to monitor the sustainabilityand environmental impact both of industrial processes and realizedconstructions, and the increasing sensitivity on the part of designers andoperators of the sector have made the steel at the top of the ranking ofmaterials used, due to its high recyclability. In addition the ease and speedof assembly on site the prefabricated structures limit the costs of managementand supper. The flexibility of steel structures and prefabricated componentsfinally allows the future possibility of upgrading and renovation of spaces,extension, elevation, by means of the dismantling and subsequent reassembly andthrough the greatest freedom in the formation of joints, supports andstiffeners in place. The steel find thus a wide use in the building field,where it lends itself to the most diverse and modern projects. A good exampleof this are the ventilated facades. Walls that certainly excite and at the sametime act as real "skin" on the building, a mix of technology andform, they can visually "lighten" the large walls, they can renovateany type of existing infill and give architectural value even to the lessvaluable building envelope. There are many usable materials such as aluminumsheets and composite type as Alucobond, steel, porcelain steel, copper, cement,glass etc.. and there are also Wholesale color steel sheet multiple forms of individual elements formingthe system, such as trapezoidal or corrugated panels, extrusions, processedpanels "cassette" or plans, expanded metal etc.. The proper planningand an appropriate size of the substructure of anchoring are essential toachieve the effect of flatness, verticality and horizontality of the lining ofthe joints, as it is very important the choice of finishing elements. The importance of the use of steel in all its variousand numerous uses makes it possible to shape and give lightness to thearchitectural components of the project, essential to the functionality andaesthetics of the entire work. Moreover, if we speak of an earthquake, it isuniversally known that the best prevention of earthquake damage is realized bymaximizing the use of steel structures. Italy for now is the back marker in theconstruction of houses and buildings with a metal structure. The reasons aremany, lack of adequate education and connection between school and industry.Few companies are dealing with steel construction. Yet the challenge for thefuture is this.