UNISOA

Certificate of qualification for the execution of public works
(pursuant to Presidential Decree 207/2010)

category	general works	classification
OG 1	Civil and industrial buildings	VIII
OG 2	Restoration and maintenance of protected real estate	VIII
OG 3	Roads, highways, bridges, viaducts, railways, subways	V
OG 6	Aqueducts, gas pipelines, oil pipelines, irrigation and drainage works	III-BIS
OG 7	Maritime works and dredging	V
OG 11	Technological systems	V
OG 12	Reclamation and environmental protection works	III
OS 3	Plumbing, kitchens, laundries	III-BIS
OS 4	Electromechanical transport systems	IV
OS 6	General finishing works in wood, plastic, metal, and glass materials	IV-BIS
OS 7	General finishing works of a building and technical nature	III
OS 21	Special structural works	III-BIS
OS 24	Greenery and urban furniture	I
OS 26	Special pavements and superstructures	III-BIS
OS 28	Thermal and air conditioning systems	V
OS 30	Internal electrical, telephone, radio, and television systems	IV
OS 32	Wooden structures	III-BIS
OS 33	Special coverings	IV
OS 2 - A	Decorated surfaces of cultural heritage buildings and cultural assets of historical, artistic, archaeological, and ethnographic interest	IV
OS 18-A	Structural steel components	VI
OS 18-B	Components for curtain walls	V