Refurbishment of a Commercial Building with Single Level Basement and PiledFoundations for a 70% Increase in Floor Area and Structural Carbon Rating Scheme (SCORS) "A".Â-Video

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Arup engineers describe the foundation strengthening that enabled the refurbishment and expansion of 1 Triton Square, a London office building. By reusing its existing structure and foundations, the project added three storeys and infilled the central atrium, increasing net floor area by about 70% without compromising the basement. A retrofit piled raft connected new piles to existing foundations, supporting the building during construction. Extensive cement replacement helped reduce structural embodied carbon to 136 kg CO₂e per square metre, well below the cited 350 kg benchmark. The project also achieved a BREEAM Outstanding rating.

Keywords

foundation strengthening

1 Triton Square

retrofit piled raft

embodied carbon

BREEAM Outstanding