NAF 42.13—Construction of bridges and tunnels

Where 42.13 sits

1. F Construction
2. 42 Civil engineering
3. 42.1 Construction of roads and railways
4. 42.13 Construction of bridges and tunnels

Contains 2 narrower codes

• 42.13G Construction of bridges and viaducts
• 42.13H Construction of tunnels

What 42.13 includes

• For details on Industry Class 42.13, refer to the industry descriptions under its subcategories

42.13 in other systems