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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 outfalls for R280 and EP Fairmont Extension networks
  • Contracting authority: DIRECTION DES TRAVAUX PUBLICS DE MONACO
  • Designer: BOUYGUES TP MONACO
  • Time Frame: 4 phases of work over 2 years

Services and main quantities:

  • Laying riprap 1/3T : 2900T
  • Laying riprap 0.3/1 T : 150 T
  • Removing/relaying riprap 6/10T
  • Underwater rock excavation using a pontoon and 120t long-reach excavator: 950m3
  • Installation and adjustment of material 20/150 : 300T
  • Underwater dredging work = 150 m3
  • Adjustment of the outfall base : 2590 m²
  • Cutting sections 7 and 8 of the outfall pipe at Seyne sur Mer, in Monaco
  • Installing 1 section of the outfall pipe in HDPE diam. 2500 : 40 ml - 56T for installation n. 4
  • Installing 3 sections of the outfall pipe in HDPE diam. 2500: 65T for installation n. 2
  • Installing 2 sections of the outfall pipe in HDPE diam. 1400 : 30T for installation n. 2
  • Underwater saddle connections
  • Installation of outfall ballasting collars: 41U
  • Cathodic protection of the elements
  • Concrete (Bouchon) ballast’s pipeline: 110m3
  • Backfill 20/40 : 2500 T
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