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| Service: | Preliminary design and settlement analysis for various options and layouts. 
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| Estimated cost: | Commencement: | January 31, 1996 
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          Completion date: | May 31, 1996 
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| Location: | Russel Square, London  | 
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| Technical data: | Preliminary design studies for the construction of a 4-way escalator shaft using NATM. Escalator shaft 11.5 m span, approx. 60 m long by 32 m deep, initial lining 300 mm thick reinforced sprayed concrete.  | 
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| Geology description: | Made Ground, Alluvium, London Clay.  | 
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