london underground - redesigning white-chapel station

“Radical Redesign saves Crossrail £50m on Whitechapel Station”

Presenter: Hugo Axel-Berg Manager of Engineering West Central Area Crossrail Ltd.

• Putting safety first on the agenda at every meeting

• Conducting weekly “toolbox talks” on a range of issues affecting designers in the office for all staff

• Encouraging all staff working on the project to have the appropriate CSCS accreditation

• Providing safety training for all staff covering CDM, workplace and site safety.

Safety in Design

90 km existing alignment 21 km new twin bore tunnels 8 new underground stations Extension/ renovation / improvements to 28 surface stations 24 trains / hr 200 million passengers per year

Crossrail...Currently Europe‘s largest civil engineering project

Changing Stations

Existing

Proposed

Whitechapel Station Interchange

Durward

Street Shaft

Cambridge

Heath Shaft Swanlea School

Kempton Court

Royal London

Hospital

Whitechapel

Sports Centre

Whitechapel Station

Sainsburys

The Whitechapel Vision |

Whitechapel Station Interchange

The Whitechapel Vision | Design Strategy

Whitechapel Station Interchange

Station Design | Station ‘Bridge’ Concept

Social Benefits

- Improved accessibility

- Intuitive wayfinding

- Inclusive design

Economic Benefits

- Invigorates High Street

- Optimises footfall

- Optimised Journey time

Environmental Benefits

- Reduced excavation

- Increased daylight levels

- Optimises natural ventilation

Whitechapel Station Interchange

Station Design | Passenger Flow Analysis

Passenger Flow Analysis

- Improved wayfinding

- Improved accessibility

- More daylight

- Less turns

- Shorter journey times

Whitechapel Station Interchange

Station Design | Design and Character

The Entrance

Whitechapel Station Interchange

Station Design | Lower Concourse

Whitechapel Station Interchange

Durward Street Shaft

Whitechapel Station Interchange

Station Concourse

Whitechapel Station Interchange

Station Design | Lower Concourse

Whitechapel Station Interchange

Station Design | Platforms

Whitechapel Station Interchange

2011 2012 2013 2014

SCL Starts

D-wall starts

Pilot Tunnels

complete

Platform Tunnels

complete

D-wall excavated

LCW2 VA5 EP1

LCE CP1a

TBMs Launched

Westwards

Geotechnical Monitoring

Whitechapel Station Interchange

Strengthening measures

School

• Strengthening foundations – piles – prior to tunnelling

Sport Hall

• Repair after construction

Residential Block

• Ground improvement, grout injection – prior to tunnelling

Whitechapel Station Interchange

Whitechapel Station Interchange

The design changes we made:

• Change to north-south alignment from east-west

• New concourse design

• Demolition of Winthrop St and Durward St Bridges

• Removed Fulbourne St ticket office

• New internal configuration of Durward St Shaft

• Inclusion of new public walkway

• GSM refurbished, not demolished

• Reduction in excavation

• Sustainable design features, e.g. green roof and wall.

In summary…

Whitechapel Station Interchange

How was it done?

• Thinking laterally • Embracing change • Listening to and understanding the needs of the client • Delivering for the client • Working collaboratively with all teams on the project

Whitechapel Station Interchange

Questions