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The Saudi Arabian capital Ryadh is pushing ahead with the construction of a modern and efficient public transport system for its approximately 5.7 million inhabitants. Line 1 (Blue Line) with a total length of 38 kilometers will run from north to south along the Olaya-King Faisal-Batha Corridor. The route includes 16.2 kilometers of tunnel to be excavated with mechanized tunnelling. The twin-track subway tunnels are being lined with concrete segments with an outer diameter of 9,920 millimeters and a width of 1,800 millimeters. Four Herrenknecht Multi-mode TBMs are being used for the drive.


Scope of supply:

  • 20 sets of segment moulds for stationary production and segment handling equipment
  • Planning and design of the complete segment production line
  • Factory setup including site preparation (leveling and consolidation, access roads)
  • Steel construction, MEP works and building concrete works
  • Gantry cranes, overhead cranes, rails and transport trolleys
  • Compressed air station
  • Data recording system SDS (Segment Documentation System)







2,300 RINGS


All from one source

In order to reduce interfaces during planning, design, supply and installation, the customer ordered a turnkey segment production plant from Herrenknecht Formwork. With the longterm experience and on the basis of the full-range portfolio of the company, interfaces can be reduced or optimized efficiently during all phases of the project.


Herrenknecht Formwork is a specialist for maximum precision of moulds. In addition, our scope of supply includes any equipment required for segment production. If required, our consulting and service specialisits are at the customer's disposal during all project phases.