From Tunnelling To Tracks - page 3 of 3
Martin Harper, RSPB’s Conservation Director, said:
By moving spoil from central London to a part of the coast below sea level and vulnerable to flooding, the partnership is allowing the completion of a major transport project which will boost the economy, while providing an area that will become an area of international importance for wildlife.
All sectors including Government now need to exploit this inventiveness to unlock other projects on a similar scale for the benefit of wildlife, people and the economy.
Wallasea Island will show for the first time, on a large scale, how to ‘future proof’ low lying coastal areas against expected sea level rise and deliver benefits to wildlife.
98 per cent of Crossrail’s excavated material from deep below the capital from Crossrail’s tunnels, stations and shafts has been recycled or re-used, with almost half being shipped to Wallasea Island.
At its peak six ships arrived at Wallasea each day, unloading 8,000 tonnes of material. 2,400 shiploads of material were delivered in total, removing over 150,000 lorries from the roads.
Canary Wharf Crossrail landscaping
The new Crossrail station in the North Dock of West India Quay, immediately north of Canary Wharf, has been transformed by the new station designed by Foster + Partners.
Atop the new station is the roof park/garden constructed by Blakedown covering over 5,300 m² which was designed by Gillespies. The primary function of the roof garden is as a publicly accessible garden space.
Blakedown took over the space from concrete formation providing drainage, insulation, void formers, topsoiling, bespoke feature walls, ducting, bespoke seating, specially constructed precast concrete plank walkway, resin bound surfacing, over 2,000 m² of granite paving, mature trees and extensive shrub planting.
The intense scheme involved craning all material through the gap in the timber beam roof carefully timed around other trades requiring access to the space and the limited cranes.
The project involves working out of hours and over weekends to ensure the works could be completed in the limited window to allow shop and restaurant fit-out contractors to start.
The scheme involved importing over 600 m³ of topsoil, 100 tree ferns, 15,000 shrubs, 70 mature trees and the 2,000 m² of unique black granite.
Jet Grouting Underneath Victoria Station
Difficult ground conditions deep below London’s Victoria Station required special engineering solutions.
As this video explains, jet grouting was the best and most cost-effective method of consolidating the ground for the CrossRail development to continue.