You have arrived on the English website.

Storage reservoir at Issy-les-Moulineaux

Construction by Razel-Bec of a stormwater storage reservoir under the Gabriel-Voisin Stadium in Issy-les-Moulineaux
Bassin de stockage à Issy-les-Moulineaux

Characteristics of the reservoir

• An underground reservoir 26 metres deep and 40 metres in diameter, with a circular diaphragm wall, a concrete apron resting on 170 micro-piles, tie plates and an abutment slab in prefabricated sections (beams and plates).

• Constructions inside the reservoir: slope forms, trough support shells, two vortex wells, a concrete spiral staircase, upper and lower steel walkways.

• Technical premises under the stadium: civil engineering and finishing of the premises for ventilation, electricity, toilets and washrooms, access gallery and outlet tunnel.

• Start well for the micro tunnel borer at a depth of 12 metres to connect the reservoir to the storm spillways.

Work was completed at the end of December 2017.

The Fayat Group subsidiaries involved in the project


Major player in public works, nationally and internationally.


Deep foundation and underground works specialist.