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An example of a multi service tunnel construction standard which has been used in many cities in
Italy [b‐29] is shown below. This standard considers the possibility of coexistence in the utility tunnel
of the following services: distribution networks of aqueducts; electricity distribution grids; electrical
networks for public lighting systems and systems for traffic lights; telecommunications networks
(telephone, data transmission, cable TV, etc.) and district heating networks.
Figure 16 – Example Utility Tunnel of Rectangular Cross section
[Source: Italian Norm, b‐29]
ITU‐T's Technical Reports and Specifications 405
