1) Gas, oil refining and chemical industry facilities:
- general building work
- finishing work
- sanitary engineering
- pile work
- steelwork erection
- erection of modular concrete and reinforced concrete structures
- thermal insulation and fire protection of structures, pipelines and manufacturing equipment
- installation of internal engineering systems of building
- installation of external water supply and sewerage networks
- construction of external heating networks
- works connected with increased danger of industrial production and facilities: gas industry; chemical, petrochemical, oil and gas processing industry, explosion and fire hazardous industries
2) Utilities for water, wastewater and gas supply
3) Roads and highways
4) Intercity and local electricity transmission and communication lines
5) Excavation works