The HS2 project is a High Speed 2 (HS2) rail project in the United Kingdom, designed to link London to Birmingham (phase 1), then to Manchester and Leeds (phases 2a and 2b) in the North of England.
Phase 1 of the project, currently under way, covers a 200 km section between London and Birmingham. It has been divided into 7 lots, which have been awarded to several consortiums composed of several companies. Two of these lots have been awarded to Eiffage-Kier, who has commissioned setec, Arcadis and Cowi, associated in a DJV (Design Joint-Venture) to carry out the design of the central lots C2 and C3 over a stretch of 80 km, including in particular 17 viaducts, 3 covered cuttings, and high-level earth structures (embankments up to 14 m high and excavations of a depth of almost 30 m).
In more detail, setec is involved in the Design Detail and Check Cat 2 for lots C2/C3, with the project manager for lot C1 responsible for Check Cat 3 for lots C2/C3 and the project manager for lots C2/C3 responsible for Check Cat 3 for lot C1, which covers the ventilation and access shafts of the Chiltern Tunnel: Chalfont St Peters, Chalfont St Giles, Amersham, Little Missenden and Chesham Road.
These shafts are associated with the Chiltern tunnel, with a diameter of up to 17 metres and a depth of up to 63 metres, built using the diaphragm wall method, and with ventilation plants extending over 33m x 60m and 10 m in depth.
setec controls two of the five above mentioned sites: Little Missenden and Chesham Road with Terrasol as partner.
