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High level consulting and feasibility studies, coordination of common design approaches (Focus Group) and preparation of deliverable approach statement (outline design criteria).

Specialist sub-consultant for the analysis, design check, and design improvement recommendations of SCL structures.

Design of the primary sprayed concrete linings and excavation stability including depressurisation/dewatering. 3D FE modelling of all SCL tunnels including excavation steps.

Temporary works design included design of tunnels prior to ring closure and 28 day strength as well as depressurisation design.

Tunnel design, engineering support, geotechnical engineering and site supervision services were provided.

Design of SCL tunnels and access shafts linked to both Central and Northern line. Supervision during construction.

Design of SCL tunnels and access shafts linked to Central, Jubilee line, and Crossrail Link Passage. Construction supervision.

Design of tunnels and shafts (primary lining, waterproofing, secondary lining). SCL, squareworks and connections to existing assets.

Provide SCL project services, supporting main tunnel-stations-alignment work streams, design of tunnel cross sections, SCL design principles, geotechnical review and risk assessment.

Feasibility study and conceptual design.