water area
Dams, dams and hydroelectric power plant buildings, hydraulic structures and water tunnels, water reservoirs and water distribution network, facilities and equipment for large water and sewage treatment plants.
building and buildings
including wooden, brick, stone, concrete, metal, building structures, small areas, wall painting, sidewalks and the like
Facilities and equipment
Urban gas supply networks, mechanical and hydraulic installations of dams, building cooling systems, building equipment and a small water and sewage pumping station.
road and transportation
Construction of roads such as main and secondary roads, highways, freeways, railways, airport runways, tunnels, bridges, underground roads and transportation systems.