Mouchel and Birse are working as a design and build team to stabilise a 140-year-old embankment at London Underground's Ladbroke Grove Station.
The original station was constructed around 1860 on an embankment that was raised 40 years later when the station was rebuilt with longer platforms and renamed. Now the station walls and platform
canopies are noticeably leaning away from the track showing that their foundations have moved and rotated over the years.
A system of piled walls and ties is being designed by Mouchel to overcome the problem. Two piled walls extending beneath the embankment into London Clay will underpin the station and arrest further movements. The piled walls will be tied together every five metres with steel tie bars running across the embankment 1.5 metres beneath the tracks.
Reader enquiry no 803