"Gronda di Genova": electromechanical installations

Client: Spea Engineering S.p.A. ora Tecne Gruppo Autostrade S.p.a.

Services in this project:
  • Specialist support for technical design

Specialist support service for the execution engineering dal design of the electromechanical installations as part of the modernisation of the Genoa Road and Motorway Interchange Project: upgrading of the A7-A10-A12-A26 system, denominated "Gronda di Genova."

The newly built infrastructure incorporates approximately 72 kilometres of new motorway tracks, interconnecting with the main junctions in the city area and linking to the existing A7, A10, A12 and A26 motorways.

Given the complexity of the orography of the area to be covered, the new road system will be almost entirely underground (nearly 90%), with 23 tunnels (2 of which are over 6 kilometres long) with sections of up to 500 square metres in the connecting shafts between the motorway arteries.

The above-ground works include the construction of 13 new viaducts (including the new Genoa Viaduct, with a length of approximately 700 metres and a height of roughly 110 metres) and the extension of 11 existing viaduct infrastructures.

Engineering design services included the study and development of the following systems: MV/LV power distribution, including electrical transformer substations, internal and external cable routes to buildings and tunnels, MV/LV distribution power lines and terminals to the facilities served;

  • road and tunnel lighting (standard, emergency, and escape);
  • tunnel ventilation (longitudinal) and ventilation of the temporary safety areas and passages;
  • conventional fire-fighting systems (water systems - hydrant networks);
  • fire detection systems with digital and fibre optic linear dispersion fire detectors;
  • road and tunnel sensors to assist the ventilation and fire detection systems;
  • active video surveillance with integrated automatic monitoring of traffic, related abnormal events and fire (AID technology);
  • automatic detection and management of dangerous goods by road transport (ADR);
  • VoIP-based "SOS" emergency call service;
  • information and active messaging to road and tunnel users (variable message panels and illuminated signs);
  • environmental monitoring systems (weather systems, traffic counting and classification);
  • ultra-wideband geographical (WAN) and local (LAN) data network infrastructures for the implementation of high-tech services along road and motorway routes;
  • UHF, VHF, and Wi-Fi (indoor/outdoor) radio coverage, including software checks/simulations and link budget calculations.

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