Page 11 - Nurol Construction Company Presentation

Marmaray Bosphorus

Immersed Tube Tunnel

Crossing For Metro,

İstanbul/TURKEY

Bosphorus crossing part of

the metro line consists of 11

immersed segments, each

with a length between 98,5

and 138 m. 56 m deep

immersed tube holds the

claim to "the world's

deepest submerged

tunnel".

Specially designed, 40 Mpa non-early age cracking concrete was used for

the construction works. 6 TBMs, with a diameter of Ø8.0 m each, were used
in the project execution.