| A - material processing equipment |
| B - equipment for production, transport and distribution of concrete, mortar and rendering mixes |
| C - lifting gear |
| D - equipment for earthmoving and soil compaction |
| E - road construction machinery |
| F - railway track construction equipment |
| G - floating equipment |
| H - tunnel and mining construction equipment |
| J - pile drivers and extractors, soil injection equipment |
| K - drilling equipment, diaphragm wall equipment |
| L - equipment for pipe jacking and pipeline construction |
| M - equipment and plants for decontamination and environment protection |
| P - transport vehicles |
| Q - air compressors, pneumatic tools |
| R - equipment for power generation, transformation and distribution |
| S - hydraulic cylinders and hydraulic units |
| T - centrifugal and piston pumps, pipelines |
| U - formwork and scaffolds |
| W - workshop machines and equipment |
| X - construction site accomodations, containers |
| X.0 - huts |
| X.1 - accomodation huts (cellular construction) transportable |
| X.1.0 - accomodation huts (cellular construction), wood construction |
| X.1.1 - accomodation huts (cellular construction), metal construction |
| X.1.10 - construction site accomodation, single wall cellular design |
| X.1.11 - construction site accomodation, double wall cellular design |
| X.1.12 - construction site accomodation, cellular design, reinforced type |
| X.2 - site caravans |
| X.3 - containers |
| X.4 - sheds, hangars for site installation |
| X.5 - miscellaneous equipment |
| X.6-X.9 - not used |
| Y - equipment for surveying, laboratory, office, communication, monitoring, kitchen |
