The original programme was for 24 weeks, with COVID mitigations Sian achieved completion with 20 weeks.
The original programme was for 24 weeks, with COVID mitigations Sian achieved completion with 20 weeks.
Measures included:
7500 m3 of concrete
2300t of rebar.
The scope included:
700m of track slab ranging from 2m thick to 1m thick including over 30000 couplers and over 1000t of reinforcement.
A 22m high single-sided concrete wedge with over 700 m3 of concrete.
A 22m high head wall incorporating two steel tunnel eyes, injectable grout hoses, water bar and tilt sensors.
Fabrication and installation of two 24t, 10m diameter tunnel eyes with over 250m of weld in each.
Sian has undertaken the particularly challenging task of designing, managing, supplying and coordinating all Temporary works and crane lifting including the tunnel eye installation.