Royal Arsenal Woolwich Crossrail Station Box
Berkeley Homes are providing a Crossrail station box within the Royal Arsenal site at Woolwich.
In 2009 Waterman were awarded the contract to undertake the Stage D concept design, followed by the detailed design in 2011.
The station box is internally 256m long, 26.6m wide at the East and West ends, and 20.4m in the centre, and from 13 – 17m deep to the top of the base slab. With the water table close to ground level, and the ground predominantly Thanet Sand, dewatering was required during construction. The design has had to ensure that ground settlements around the box are kept within acceptable limits to avoid damage to the three adjacent English Heritage Grade II listed buildings.
The design includes piles and diaphragm walls, as well as special ‘soft eye’ panels in the end walls for the subsequent entry and exit of the Tunnel Boring Machines (TBMs).
Service diversions were also required, including a deep sewer diversion, where settlement from the subsequent tunnel construction had to be accommodated. These were completed in 2011.
The Station box was completed in December 2012, 6 months ahead of programme.
Over the central section of the box there is an Over Site Development (OSD), which is supported off the station box.
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