A heavy metro line, km 3.3 long, suitable for simultaneous operations of trains from the Alifana Railway and Line 1 of the Naples Underground.
The tunnels will be partly cut-and-cover and partly bored, whereas of the 4 underground stations, 3 will cut-and-cover with excavations between slurry walls one with a widening of the line tunnel.
The other technological structures – electrical sub-station and ventilation room – will be constructed in cut-and-cover with excavations between slurry walls.
- Finishing of stations and line auxiliary buildings;
- Electric sub station structure and finishing;
- Permanent way;
- Operating systems (ET line., E.S.S., Telephone system, signalling and automation, supervision and control, safety/security systems, data transmission);
- Line and station installations (ventilation, mechanical, electrical and special, water, fire prevention);
- Works programming and setting up of construction site;
- Bills of quantities (assistance);
- External works;
- Design/construction coordination.