45221200 – Construction work for tunnels, shafts and subways

Construction work for tunnels, shafts and subways code description

The category “Construction work for tunnels, shafts and subways” encompasses various specialized services related to the construction and maintenance of underground structures. It includes covered or partially-covered excavations, which involve the removal of soil or rock to create underground spaces. Culverts, another subcategory, refer to the construction of tunnels or channels that allow the passage of water under roads or railways. Shafts involve the construction of vertical or inclined openings used for ventilation, access, or the extraction of resources. Construction work for tunnels focuses specifically on the creation of underground passages for transportation or utility purposes. Lastly, the category includes underground work other than tunnels, shafts, and subways, which encompasses a range of construction activities carried out beneath the surface. These subcategories provide a comprehensive overview of the different types of construction services available for underground structures.