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Compare official labels, inclusions, exclusions, examples, hierarchy, mappings, and practical fit notes.
Use this group for the broader activity area of construction of roads and railways, including Construction of roads and motorways, Construction of railways and underground railways, and Construction of bridges and tunnels. Open the child codes when a more specific code is needed.
Use this group for the broader activity area of construction of utility projects, including Construction of utility projects for fluids and Construction of utility projects for electricity and telecommunications. Open the child codes when a more specific code is needed.
Use this group for the broader activity area of construction of other civil engineering projects, including Construction of water projects and Construction of other civil engineering projects n.e.c.. Open the child codes when a more specific code is needed.
Use this class for construction of roads and motorways when the main activity includes Construction of motorways, streets, roads, other vehicular and pedestrian ways and Surface work (e.g. paving of roads, motorways or bridges with asphalt, concrete, stone). Check exclusions and nearby codes before applying it to a mixed activity.
Use this class for construction of railways and underground railways when the main activity includes Construction of railways, underground railways and subways and Construction of electricity overhead lines and conductor rails for railways. Check exclusions and nearby codes before applying it to a mixed activity.
A short checklist before choosing one code over another.
These codes share F CONSTRUCTION > 42 Civil engineering before they diverge.
42.1, 42.2, 42.9, 42.12 already list another compared code as related or often confused.
42.11, 42.12 include official exclusions that may point to a better-fitting code.
42.9 have non-exact Rev. 2 to Rev. 2.1 mappings; review old records before migration.
| Comparison field | 42.1 | 42.2 | 42.9 | 42.11 | 42.12 |
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| Official title | Construction of roads and railways | Construction of utility projects | Construction of other civil engineering projects | Construction of roads and motorways | Construction of railways and underground railways |
| Plain-language summary | Use this group for the broader activity area of construction of roads and railways, including Construction of roads and motorways, Construction of railways and underground railways, and Construction of bridges and tunnels. Open the child codes when a more specific code is needed. | Use this group for the broader activity area of construction of utility projects, including Construction of utility projects for fluids and Construction of utility projects for electricity and telecommunications. Open the child codes when a more specific code is needed. | Use this group for the broader activity area of construction of other civil engineering projects, including Construction of water projects and Construction of other civil engineering projects n.e.c.. Open the child codes when a more specific code is needed. | Use this class for construction of roads and motorways when the main activity includes Construction of motorways, streets, roads, other vehicular and pedestrian ways and Surface work (e.g. paving of roads, motorways or bridges with asphalt, concrete, stone). Check exclusions and nearby codes before applying it to a mixed activity. | Use this class for construction of railways and underground railways when the main activity includes Construction of railways, underground railways and subways and Construction of electricity overhead lines and conductor rails for railways. Check exclusions and nearby codes before applying it to a mixed activity. |
| Official inclusions | Not stated separately in available source data | Not stated separately in available source data | Not stated separately in available source data |
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| Official exclusions | Not stated separately in available source data | Not stated separately in available source data | Not stated separately in available source data |
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| Parent hierarchy | F CONSTRUCTION > 42 Civil engineering > 42.1 Construction of roads and railways | F CONSTRUCTION > 42 Civil engineering > 42.2 Construction of utility projects | F CONSTRUCTION > 42 Civil engineering > 42.9 Construction of other civil engineering projects | F CONSTRUCTION > 42 Civil engineering > 42.1 Construction of roads and railways > 42.11 Construction of roads and motorways | F CONSTRUCTION > 42 Civil engineering > 42.1 Construction of roads and railways > 42.12 Construction of railways and underground railways |
| Rev. 2 mapping |
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