New Bond Street, London
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New Bond Street, London
Client: Confidential
Architect: Rolfe Judd
Main Demolition Contractor: Kier
Sub Demolition Contractor: Deconstruct
Value: £confidential
This project involved the demolition of the fourth to first floor, removal of the ground floor excavation of a new rear basement and part demolition of the rear external wall.
The facade of 12 New Bond Street was temporarily restrained using an internal steel tower on temporary pile foundations. Horizontal steel waling beams were provided internally to restrain the facade and party wall at each floor level. Facade bracing was provided at ground and first floor levels to achieve stability parallel to New Bond Street. Steel needle beams were provided just below roof level to provide vertical support to the rear wall.
The facade of 14 New Bond Street was temporariliy restrained using external steel towers supported on pile foundations located within the existing sub-station and new rear extension within Cork Street Mews.
As per temporary works for 12 New Bond Street, facade bracing was provided at ground and first floor along with steel needle beams to provide vertical support to the rear wall below second floor.
The vaults of 12 New Bond Street have been shown to be self-stable and no temporary works were required. At 14 New Bond Street, temporary works were required to brace the openings in the vault cross walls and waling beams were designed to provide support in temporary conditions at the head of the retaining walls due to the demolition of the ground floor. These waling beams were connected to the facade retention system.
The new basement at the rear of the property extended into Cork Street Mews. A temporary tied king post wall was designed to support Cork Street Mews and allow the new basement to be excavated. The scheme involved careful co-ordination between the temporary works to support the retained structure and the proposed new frames.
L+C were appointed by Deconstruct as temporary works engineers for this project. Our role involved the development of a detailed construction sequence, design of all necessary temporary works and submission of information for party wall awards and AIP.