Project Profile: 35 Marylebone High Street

Client
Walter Lilly
Date of completion
November 2016
Value
£7m
Full Case Study Download
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Scope of works

 

  • Façade retention

  • Demolition

  • Temporary works

  • Piling

  • Reinforced concrete basement

 

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Project key points

 

  • Six-storey demolition whilst retaining the front façade

  • High detail separation to bonded concrete beams to the adjoining party wall at two levels

  • Design and installation of all temporary works schemes, including seven-storey façade retention, temporary structural steel propping and piles to existing columns and sheet piling to form new basement

  • Excavation of two-storey basement to be 6.9m deep from existing finish floor level using sheet piles varying from 7m to 11m deep

  • Proposed design to the client to reduce the basement raft to offer saving and to avoid the underpinning scheme being affected by the ground water level

  • Construction of nine-stories of in-situ reinforced concrete frame above a double basement on a restricted city site

  • Protection and weatherproofing of a live basement substation