Trasomar Reference

Operations and main quantities :

• Combiwall + backfill :
• 47 piles diameter 864mm, thickness 10mm, length 14.5ml, by sea, in the direct vicinity of the SNCF bridge,
• 90 L604 sheet piles, length 9ml, by sea,
• Creation of 94ml of crown beam (reinforcement, formwork, pouring) – width 1.20ml / height 1ml – implementation of needle formwork,
• Backfilling with 40/80mm ballast – 2,900m3,
• Installation of geotextile under riprap between -4 and -6m deep – 620m²,
• Installation of 800-1,200kg riprap blocks for filling a pit – 270m3,
• Gateway :
• 2 piles diameter 864mm, thickness 10mm, length 12ml, by land at night – intermediate foundation of the footbridge,
• Underwater coppicing of the 6 micro foundation piles upstream of the footbridge,
• Underwater construction of a 3.65m3 concrete block around 6 micro piles (formwork, reinforcement, concrete),
• Underwater coppicing of the 2 intermediate piles of the footbridge + the 3 downstream foundation piles,
• Implementation of the intermediate header (4.25T steel) at night, by land (centimetre precision, adjustment by plungers),
• Implementation of the downstream header (6T steel), by sea (centimetric precision, adjustment by plungers),
• Implementation of the 2 footbridges (23m, 18.7T / 27.5m, 23T) upstream of the SNCF bridge and under the SNCF bridge, at night,
• Implementation of 55 pre-slabs on the footbridge,
• Implementation of a 5.5T ramp for access to the golf course's boat,
• Reinforcement and pouring of a 165m² slab on the surface of the footbridge