Formwork, reinforcement and concreting works associated with the construction of the South Portal Base Slab, Shifting Ways, Cradle Slabs, Launching seals and Tympanum. Package to include the provision of all materials (NB – concrete to either be free-issue or purchased from our preferred supplier, from our site batching plants to be erected in Spring 2020 - TBC), labour, plant ancillary products, consumables, etc. needed to undertake the works. Formwork shall be designed by the appointed sub-contractor. All works are required to facilitate the launch of the Tunnel Boring Machines in the first instance, however the installations are also to be incorporated into the permanent works after tunnelling works have been completed.
NB – Launching Seal will be provided free-issue, with the appointed sub-contractor responsible for site assembly, fixing, alignment and assembly