Près d'un siècle d'expérience au service des ouvrages de demain

Performance of underwater works C2 P0

Our constructions > UnderWater Work

Densification of the Marine Area – Gulf of Aigues-Mortes Densification of the Marine Area – Gulf of Aigues-Mortes

The work performed between September and October 2006 consisted of the construction and submersion of 18 50 ton pyramid-shaped concrete reefs and the submersion of 51 pre-fabricated reinforced concrete pipes in the Gulf of Aigues-Mortes.

The pieces were installed using our Kinard floating crane, equipped with a 130 ton crane.

The…

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Artificial Reefs PRADO 2006 Artificial Reefs PRADO 2006

This operation was the largest artificial reef operation ever carried out along the French coasts.
Over 400 reefs are currently being submerged in the Marseille harbor.

The Negri Company carried out the placement of these reefs with the assistance of divers, at depths of up to around 40 m.

Amount: € 4.2 M
Project Manager: BRLi
Contracting authority: …

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Connection of the Outfall Sewer from Montpellier Connection of the Outfall Sewer from Montpellier

This small but highly-technical operation was intended to connect the outfall sewer from Montpellier (11 km in diameter 1600 mm) to the land pipe, on behalf of SOGEA.

In order to do so, a sheet-pile cofferdam had to be put in place and the waters dredged to free the pipe without damaging it and a concrete invert built underwater, and…

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