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Accueil > References / Realisations > SEA OUTFALL – R280 – FAIRMONT- 2018/2019

SEA OUTFALL – R280 – FAIRMONT- 2018/2019

  • Nature of the structure: Installation of sea outfall for the R280 and EP Fairmont Extension networks.
  • Contracting authority: DIRECTION DES TRAVAUX PUBLICS DE MONACO
  • Designer: BOUYGUES TP MONACO
  • Time Frame: 3 phases over 2 years

Services and main quantities:

  • Removing/installing stone blocks of 6/10T
  • Underwater rock excavation using a pontoon and 120t long-reach excavator: 950m3
  • Adjustment of outfall base: 2200 m²
  • Towing sections of the outfall from La Seyne sur Mer to Monaco (mirror welding of sea outfalls in La Seyne sur Mer)
  • Installing 3 sections of the outfall in HDPE diam. 2500 : 65T for installation n°2
  • Installing 2 sections of the outfall in HDPE diam. 1400 : 30T for installation n°2
  • Underwater saddle connections
  • Installation of outfall ballasting collars: 37U
  • Cathodic protection of the elements
  • Concrete protection perpendicular to the future “Port d’Animation” quay: 60m3
  • Backfill 20/40 : 2500T
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