FOR THE FIRST TIME IN ITALY, A SURGICAL OPERATION ON THE ROADS OF PAULLO, WITH A TRENCH 2.5 CM WIDE.
Milan, 18 July 2018. The Metropolitan City of Milan, which has always pioneered innovation, in partnership with Sirti, a historic Milanese company and leader in Italy in technological infrastructure, begun, this morning, the implementation, for the first time in Italy, in the municipality of Paullo, of an approximately 800 metre fibre optic connection with an innovative technology based on micro-trenches only 2.5 cm wide and 20 cm deep, in line with the pavement kerb.
Today, the dimensions of modern infrastructure, in terms of mini-cables and mini-tubes to protect cables, are incredibly small and, as a consequence, only require the smallest of trenches – much less invasive – and reduce to the absolute minimum the waste materials and the materials needed to fill the trench.
With this in mind, completely new excavation and filling techniques are needed, that have to use low-environmental impact systems which are quick to implement. The complete implementation of the infrastructure project must be such as to reduce to the minimum any inconvenience to people living and working nearby. The concept of a construction site that stays open for days and that obstructs traffic and inconveniences people has to be rethought.
Sirti and the Metropolitan City of Milan carried out a theoretical and experimental study to understand the interaction mechanisms between a micro-cable in the road and the road surface itself. The objective of the study was to identify the best solution, both in terms of materials to use and the positioning of the infrastructure, to laying modern infrastructure. On the basis of the results, the infrastructure will be installed with the following characteristics:
- Digging a trench 20 cm deep, enough to protect the fibre optic infrastructure and avoiding the majority of underground services (from 0 to 50 cm, regulations do not provide for any restrictions, UNI CEI 70030).
- A trench just 2.5 cm wide yet large enough for the infrastructure to be laid.
- Filling in the trench flush with the road using modified bitumen mixed with inert material, that is, a material with characteristics of elasticity and strength similar to asphalt, eliminating the concept of the layered filling.
- Placing the mini-trench on the outside edge of the lane (in line with the lane’s boundary), in order to minimise load on the infrastructure.
It should also be noted that civil works are, on average, 80% of the total cost of the system, mostly linked to the onerous task of restoring the road’s surface. The proposed solution avoids the need to perform restorative work on the road yet simultaneously guarantees the integrity of the road surface, thereby allowing significant savings to be made.
“For us, the topic of innovation is central to the region’s strategic development. These new patents add to the considerable work already carried out in our offices over the past years which, among other things, has led the Metropolitan City to implement an important piece of infrastructure like the fibre optic ring that extends over 250 kilometres throughout the region. What we are doing today with Sirti reiterates how a virtuous partnership between the public and the private sector on innovative subjects can only have a positive impact on our region in terms of the economic and social development of our community”, said the Deputy Mayor for the Metropolitan City of Milan, Arianna Censi.
“The partnership between the Metropolitan City of Milan and Sirti is a virtuous example of the collaboration between a public body, keen to guarantee high quality services to its populace, and a private entity which, thanks to its know-how, innovation and the latest technologies in implementing infrastructure projects, can deliver services with low environmental and social impact, guaranteed implementation times, fast execution, and minimal disturbance to people and traffic. We hope that the regulations governing the modus operandi and the technologies used to implement this infrastructure project will be appropriately reviewed in order to allow the benefits seen here to be extended to the rest of the country”, said Andrea Mondo, Vice President Operations at Sirti.
Metropolitan City of Milan – An institution established in 2015 which has taken the place of the Province, inheriting all its main functions. Always open to technological innovation, it administers a region of over three million inhabitants and 134 municipalities.
Sirti S.p.A. – Sirti is a leading company in the design, construction, maintenance and integration of network infrastructure systems and management. Founded in 1921, it operates in the Telecommunications, ICT, Energy and Transportation sectors and employs around 4,400 staff. Sirti is also a successful international player in Europe and in the Middle East.
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