Group 1 - WORKS OF ART AND INDUSTRIAL WORKS

• 11 - Structures and industrial civil engineering (concrete and steel concrete)
• 1111 Highly technical works.
• 1112 High-tech works in the maritime or river environment.
• 1131 Works of current technicality.
• 1132 Works of current technicality in the maritime or river environment

Group 2 - PREPARATION OF SITES, FOUNDATIONS AND EARTHWORKS

• 21 - Demolition
• 211 By mechanical machine.
• 23 - Earthworks, Earthworks
• 2322 Routine earthworks in non-urban areas.
• 24 - Special foundations
• 243 Piles and foundations other than piles bored and molded in the ground or micropiles.
• 25 - Support
• 2542 Other anchors
• 252 Piling of sheet piles, sheet piles.

Group 7 - SPECIAL WORKS

• 71 - Works related to the construction of engineering structures and industrial equipment
• 712 Sealing of structures and casing.
• 713 Sawing - drilling
• 72 - Works related to repair-rehabilitation and strengthening of civil engineering structures
• 7221 Reinforcement and distribution of metal structures.
• 7252 Sealing.
• 7261 Jointing or repointing of masonry.
• 7262 Regeneration and injection of masonry.
• 7263 Resumption of masonry.
• 7271 Resumption of degraded concrete.