K1 Knightsbridge
A prestigious 340,000 sq ft mixed-use redevelopment in Knightsbridge
- Location
- London SW1X
- Client
- Carraig Investments Sarl
- Date of investigation
- Apr 2015 to Aug 2017 (phased)
- Consulting engineers
- Waterman Structures Ltd
This development includes high-end retail and office space, luxury residential units and a roof-top restaurant. The project included a complex façade retention.
We undertook two phases of investigation, including the following:
- Cable percussive boreholes to between 40m and 65m depth
- Rotary cored borehole to 71.50m depth using Geobor S techniques to provide high quality soil core samples
- Hand excavated trial pits to expose existing foundations and services
- In-situ self-boring pressuremeter testing
- Downhole seismic testing (using specialist sub-contractor) to determine shear modulus
- Cone Penetration Testing (CPT) using basement system with existing foundation for reaction
- Contamination testing
Depth reached
71.5m
Rotary cored borehole
65m
Bars drawn to scale against the 71.50m deepest hole on our featured projects.Cable percussive (deepest)
A tube station beneath the site
Further challenges included the presence of the Knightsbridge LUL underground tube station beneath part of the site.
