SEA OUTFALL – R280 - FAIRMONT- 2018/2019

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SEA OUTFALL – R280 – FAIRMONT- 2018/2019

Type of works : Installation of sea outfalls for R280 and EP Fairmont Extension networks
Contracting authority : DIRECTION DES TRAVAUX PUBLICS DE MONACO
Project manager : BOUYGUES TP MONACO
Duration : 4 phases of work over 2 years

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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