Extensive redevelopment of Denys Lasdun’s Grade II listed IBM Building, retaining 80% of the structure and adding 40% additional area to create a modern, adaptable and low-carbon workplace.
Structural embodied carbon
160
kgCO2e/m2
80% of the existing building retained
A saving of 45 tonnes of embodied carbon
24
Tonnes of reused steel
Key features
Additional floor and extended floorplates
We added a new storey to the existing building, as well as multiple floorplate extensions to east and south elevations.
Core restructure
We removed and replaced the existing stability cores with new reinforced concrete structure.
Reused foundations
We justified the reuse of the existing pad, raft and piled foundation under the proposed increased loads.
Constrained site
Situated close to the River Thames and the National Theatre.
Drainage coordination
Incorporated blue roofs and permeable paving into the building fabric to omit the use of attenuation tanks. Close coordination with the design team allowed the existing drainage to be reused and limit breaking out of the existing structure.
01-04
Existing
Awards
Existing
Demolition
Post demolition
Proposed
