OG 1: CIVIL AND INDUSTRIAL BUILDINGS
It regards the construction, the maintenance or the restructure of building for every human activity, directed or indirected, complete with the necessary structures, electromechanical systems, electrical system, telephones, electronic systems and finishes of any type let alone of the eventual connected, complementary and accessory works.
It comprises residences, jails, schools, barracks, offices, stages, stadiums, industrial buildings, parkings, railway and metropolitan stations, airport buildings and any special structure in reinforced concrete like thin times vault, domes, tanks, silos and buildings of great height with structures of characteristic details and complexity.
OG3: ROADS, FREEWAYS, BRIDGES, VIADUCT, RAILROAD, METROPOLITAN RAILROADS, FUNICULARS, AND RUNWAY, AND RELATED COMPLEMENTARY WORKS
It regards the construction, the maintenance or the repair of structure that concur to road, rail and air transport of every degree of importance, complete with every connected, complementary or accessory work, and all the electromechanical and electrical systems, telephone, electronic systems and electric traction necessary to supply a good service to the customer in terms of use, information, emergency and attendance.
It comprises roads, freeways, superhighways, included specific works as special paving, tunnels, interchanges, with o without ramp, parkings, stabilization of slopes, railroads of national and local interest, metropolitans, funiculars and tramway lines of any technical characteristic, airport runway and helipad, railstations, paving with natural or artificial materials, bridges, also of technical characteristic complex, in iron, simple or pre-cast reinforced concrete, precast concrete slabs or cast in-situ.
OG 6: AQUEDUCTS, OIL AND NATURAL GAS PIPELINES, IRRIGATION AND EVACUATION STRUCTURES
It regards the construction, the maintenance or the restructure of net in order to transport of fluid and gas to the points of delivery, complete of every connected, complementary or accessory work, electromechanical and mechanical systems, telephone, electrical and electronic systems to supply a good service to the customer in terms of use, information, emergency and attendance.
It comprises waters drainage, water treatment systems, aqueducts, water towers, pumping systems, buried and elevated tanks, equipped distribution network to the final customer, pipelines, sewages, sewage treatment systems, oil and natural gas pipelines.
OG 8: RIVER ENGINEERING, FLOOD DEFENSE AND DRAINAGE
It regards the construction and the maintenance or the restructure of natural or artificial water course for the defense of the territory, complete of every connected, complementary or accessory work, electromechanical and electrical systems, telephone and electronic systems.
It comprises navigation channels, expansion basins, river mouths, consolidation of stream beds of rivers and torrents, dikes of any type, hydraulic regulation of superficial waters, slope stabilization.
OS 1: EARTHWORKS
It regards the digging, restoration and modification of earth volumes, realized with any means and any type of the material to dig or to restore: vegetable, clay, sand, gravel, rock.
OS 12: STREET BARRIERS AND PROTECTIONS
It regards the supply, construction and the maintenance of the devices such as guard rail, new jersey, suppressors of collision, barriers and and similar structures finalized to the control and the flow security of street and protect from the fall of the rocks.
OS 21: SPECIAL STRUCTURAL WORKS
It regards the activity destined to improve the resistance and stability of lands, to prevent geological instability and provide seismic retrofitting to existing structures, the execution of geotechnical investigations.
It comprises the execution of piles of any type, deep foundations, soldier wall and special work, anchorage, supporting walls in order to restore the static functionality of the structures, the execution of surveyings and explorations of underground with special means, comprised the collection of samples to analyze in laboratory for geotecnical report, the execution of load tests, wells, slope stabilization, drainage, waterproofins and consolidation of lands.
OS 34: ANTINOISE SYSTEMS FOR TRANSPORT INFRASTRUCTURES
It regards the construction, the maintenance and the acoustic verification of the antinoise systems of street or railway such as barriers in metal, concrete, wood, glass or transparent plastic material, biowalls, cellular or alveolar walls, sound absorbing coverings of walls or tunnels.
