The central terminal building incorporates an extension to the Piccadilly and Heathrow express train services, in total there is 13.5km of new underground rail and roads.
Key technical challenges
Robert Bird Group undertook a Design Review and Value Engineering Study of the Terminal structure, resulting in:
- Deletion of in-situ hydrostatic basement slabs across majority of the site in favour of innovative precast voided slab solution, eliminating hydrostatic water pressure and soil heave.
- Deletion of in-situ concrete basement walls requiring formwork and open-cut excavation, in favour of an embedded wall system requiring less excavation and minimal formwork.
- Alternate flooring system, recognised as cost advantageous, but not adopted due to lack of time for services re-coordination.
£180 million GBP
Robert Bird Group Services: