A challenging project located in the City of Westminster’s St James’s Conservation Area, 62-63 Pall Mall involved the redevelopment of two listed buildings on an extremely tight and sensitive urban site. Both buildings were demolished to basement level while retaining the façade at No.62 due to its listed status.
The substructure and superstructure piling works involved installing a combination of contiguous bored piles and bearing piles via a bored temporary cased method to the perimeter of the existing basement along with secant piles to the sub-basement. The basement extended into the existing pavement vaults and 9 metres below street level, with the existing vaults being extended to incorporate a substantial new substation and plant area built to service the new structure.
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