COM – Contrôle extérieur – Laboratoire terrassements, couche de forme, assainissement et étanchéité des bassins

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The external inspection services include in particular, under the supervision of the project owner (master of works): on-site checks, checks on excavation, fill, PST and subgrade layer; inspection of special works for slope reinforcement; strengthening of perres; waterproofing inspections of basins and longitudinal drainage with video inspections. Length of the motorway and road concerned: 3 km + 6.5 km. Approximately 800,000 m3 of excavation, 600,000 m3 of fill and 130,000 m3 of subgrade layer, 9 basins, acoustic earth barriers (merlons), earth barriers and landscaped models. The external inspection services include in particular, under the supervision of the project owner (master of works): on-site checks, checks on excavation, fill, PST and subgrade layer; inspection of special works for slope reinforcement; strengthening of perres; waterproofing inspections of basins and longitudinal drainage with video inspections. Length of the motorway and road concerned: 3 km + 6.5 km. Approximately 800,000 m3 of excavation, 600,000 m3 of fill and 130,000 m3 of subgrade layer, 9 basins, acoustic earth barriers (merlons), earth barriers and landscaped models.

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