Client: Mashhad Urban Railway Organization
Location and Year: Mashhad, Iran, 2008-2011
Features: Design and engineering metro line
Project description

In the Iranian city of Mashhad, a metro system is being constructed. Arthe Civil & Structure has performed the design and engineering of the bored section of the tunnel, including the design and structural analysis of the concrete tunnel lining. The twin railway track tunnel has an external diameter of 9,1 m and the length of the bored section amounts to 10,8 km. Arthe performed the calculations of the settlements and the influence on the surroundings during and after the TBM tunneling process, in order to assess the risk of the damage to buildings. The purpose of a risk assessment is eventually to define mitigating measures, in order to prevent or remediate damage.


  • Performing structural analysis of the lining;
  • Detailed design of the lining rings and segments;
  • Calculations of the vertical displacements in the subsoil with FEM software;
  • Defining of the risks on building damage;Determination of mitigating measures.