The Paddington Bakerloo Line Link, which connects the Crossrail station at Paddington with the London Underground Bakerloo Line station, will provide a dedicated pedestrian route enabling passengers, inducing persons of restricted mobility (PRMs) to interchange between Crossrail and the Bakerloo Line without having to cross the concourse of the Network Rail station.
Gall Zeidler Consultants carried out the Independent Category III Check of the design for all new underground structures constructed using Sprayed Concrete Lining / New Austrian Tunneling Method (SCL / NATM) and Squareworks techniques for the project. This check included evaluating construction sequences, excavation and support details, construction details, numerical analyses, waterproofing details, monitoring proposals and an assessment of the impact of mining underneath the existing LUL Bakerloo Line.
London, United Kingdom
2015 - 2016
Temporary and Permanent Shafts, Squareworks Tunnels, Underground Passageway Tunnels, Cross Passages, Connections to existing Platform Tunnels
Temporary Access Tunnel under LU Assets: 30 meters (98 feet)
5.5 by 6.5 meters (18.0 by 21.3 feet)
Made Ground, River Terrace Deposits, London Clay, Groundwater Above London Clay Latite Porphyry, with variable alteration
Approximately $61 Million
ARCADIS (UK) Ltd.
London Underground Ltd