Line 16-1 Paris Metro, France

Project type:

  • Subway tunnel 


  • Precast segments 


  • Owner: Société du Grand Paris (SGP)
  • Designer: Egis
  • Contractor: Eiffage Génie Civil
  • Precast plant: Bonna Sabla

The Grand Paris Express line 16 is the latest expansion of the Paris Metro. It is designed to connect the suburban stations and prevent the need to travel into central Paris and out again to reach urban destinations. The new line consists of 19.3 km (12 mi) of tunnels lined with precast segments reinforced with Dramix® 3D.

The challenge

The diameter of the tunnel measures at 8.7 m (28 ft) on the inside and at 9.5 m (31 ft) on the outside. Because of the size and urban location of the project, time was of the essence. Precaster Bonna Sabla offers its customers optimum quality and productivity. Using Dramix® steel fiber reinforcement for the precast segments enabled them to provide the quality at the speed they value. 


The solution

The concrete segments uses C540/50 concrete reinforced with 40 kg/m3 of Dramix® 3D steel fibers. The entire project contains up to 5.200 ton of Dramix® steel fibers, making it one of Bekaert’s biggest projects in Paris.