Started in 2011 “Le Grand Paris Express” aims to increase environmentally friendly transport beneath the city streets. Realisation of the project is under the guidance and leadership of the Société du Grand Paris (SGP) and the Syndicat des transports d'Île-de-France (STIF).

It is estimated that approximately two million passengers use the rail network on a daily basis. Following the successful expansion, they will comfortably reach their destination around the clock. The network expansion which is mostly underground is set to connect the outskirts and the centre of the Île de France more closely with one another. It will serve airports, TGV stations and further venues such as business districts, research centres and universities. The aim is to make the daily commute easier, as well as making it easier to access work, education, cultural and recreational activities. This will also take pressure off of roads, the regional express rail network RER (Réseau Express Régional), as well as other transport systems. Reduced motor traffic will lead to less congestion and air pollution. Overall, the network will be 205 km long and will include 68 new stations.

The existing métro lines 11 and 14 will be expanded, while lines 15, 16, 17 and 18 will be newly created. First steps will include the expansion of the existing lines. The number 14 will travel from Saint-Denis Pleyel to the Orly airport. The route was already expanded by six kilometres with five stations between 2012 and 2017. The electrical installation experts for local public transport infrastructures SDEL Transport En Commun (a business division of VINCI Energies) was commissioned with supplying low voltage during the north expansion from Saint-Lazare to Mairie de Saint-Ouen. This included securing the traction current, lighting, ventilation, data transmission, communication, signal and safety technology, and much more.

In order to securely fix the console systems of the power supply lines, the electrical installation expert chose fischer’s FH II-I stainless steel (A4) internal thread anchors. These have an approval (ETA) for cracked concrete as well as visual placement control. The chosen variant is suitable for threaded rods with a diameter of ten mm and a 15-mm drill diameter. Numerous pull-out tests in various building segments demonstrated that this was the best solution for the application of the special bore in the prefabricated parts. The systems combine a high load capacity, reliability and assembly comfort along with cost effectiveness. The FH II-I were fitted using the prior-insertion method of installation with an anchoring depth of 70 mm and minimal 150 mm fixture thickness.

The SDEL electrical installation experts drilled 15 mm holes into a plastic component in the concrete wall before positioning the fixing and anchoring it quickly and easy against the bore hole wall by turning the internal threaded bolt. The console systems were each subsequently fixed to the concrete walls using FIS A M10x110-A4 threaded rods and two fischer nuts. Approximately 20,000 fischer products were used for the northern expansion of line 14 alone.

The “Metropole Grand Paris” is further increasing its mobility by expanding local public transport. Following the early success of fischer They are set for further involvement of subsequent project phases and look forward to working closely with contracting and construction partners.

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