Crossrail Sprayed Concrete Linings


This paper looks at the sprayed concrete lined (SCL) tunnel design by Mott MacDonald for the Crossrail project. The SCL design consists of five new underground stations, shafts and two Crossovers which will be the largest SCL tunnels to be built in London. It also discusses how the design team was set up and the approach and methodology behind the design following Crossrail's values. It will also give an overview of the project design, the challenges faced and the main project design interfaces and how they were managed. It also presents how the Mott MacDonald design has been coordinated with the architecture design to meet the Architect aspirations for the overall Crossrail aesthetic. The paper also generally discusses details of design including the varying geology and will set out the methodology and ethos behind the design and how Mott MacDonald developed their design techniques to meet the challenges of the project while giving Crossrail best value over the design period of outline to tender, through the Optimised Contractor Involvement stage and to Detailed design.