SOA Category OG5
Working on dams with SOA qualification
The OG5 category within the SOA certification system covers the construction, maintenance, and rehabilitation of dams and major hydraulic barriers—critical infrastructures for water-resource management, hydroelectric power generation, and territorial safety. OG5 includes all types of dams: concrete dams, earthfill dams, rockfill dams, gravity dams, and structures built for civil, agricultural, industrial, or hydraulic-regulation purposes. In essence, OG5 represents major hydraulic barrier works, a hallmark of Italian hydraulic engineering and a key instrument for sustainable water management.
Dams, energy, and safety: examples of works covered by OG5
The OG5 category applies to complex hydraulic structures essential for water management, energy production, and territorial protection:
- Potable-and irrigation-use dams: creation of artificial reservoirs for drinking water and agriculture, including diversion tunnels, gates, and monitoring systems.
- Hydroelectric dams: construction of hydraulic barriers for power plants, including foundations, spillways, conduits, and reservoir structures. Mechanical and electrical generation equipment (turbines, alternators) is covered under OG9.
- River barrages and navigation weirs: construction of fixed or movable barriers on rivers with hydraulic works and navigation locks.
- Flood-control basins and retention reservoirs: temporary structures designed to retain floodwaters and prevent inundation, distinct from the smaller works of OG8.
- Maintenance and upgrading of existing dams: structural, seismic, and plant-related interventions to enhance safety, performance, and overall functionality.
Categories that integrate with OG5
- OG8 – River and hydraulic protection works: OG8 covers embankments, channels, minor weirs, and broader river-regulation works. OG5 covers the primary barrier (the dam), while OG8 concerns downstream or ancillary structures such as resectioning, canalization, and energy-dissipation basins.
- OG6 – Aqueducts and irrigation works: OG6 concerns water-distribution and supply networks, whereas OG5 builds the main storage structure. An OG5 dam often connects to an OG6 system of irrigation channels, pipelines, or pumping stations.
- OG9 – Hydroelectric power plants: OG9 focuses on the power-generation plant and related systems, while OG5 covers the civil works creating the reservoir and discharge structures. In hydroelectric projects, OG5 is structural, OG9 is electromechanical—two interconnected but distinct scopes.
- OG13 – Environmental and natural-engineering works: OG13 includes environmental mitigation activities such as slope revegetation, creation of wetlands, and compensatory habitats—all supporting the integration of OG5 dams into the landscape and stabilizing reservoir slopes.
- Specialist OS categories: OS21 (special foundations and ground consolidation), OS18-A (steel components such as gates and conduits), and OS30 (electrical and control systems) frequently appear in OG5 projects.
FAQ
SOA Category OG5
OG5 is a strategic category for the future of Italy’s water infrastructure. It represents a sector of high technical, economic, and environmental value, where expertise and qualification make a decisive difference.
Investing in SOA OG5 certification allows companies to access major public tenders for dam construction, upgrading, and maintenance – contributing to national water security, energy resilience, and territorial protection.
For companies, obtaining OG5 is not merely a technical formality – it is a mark of reliability, engineering strength, and operational capability in a complex and strategically vital sector.
Contact SOA CQOP to strengthen your position in major hydraulic civil works
CONTACT US
