The subject of a considered sustainability strategy, the EPC A rated building is set to be the UK’s tallest structure to achieve a BREEAM ‘Outstanding’ rating. The 51-storey tower will offer 52,900m2 of office space, retail space on ground and mezzanine levels, a bookable event space and a public viewing gallery at the top.
Sustainability has been a key design driver from the project’s inception and one of the main goals was to optimise material efficiency. Bespoke steel sections throughout are optimised to be no bigger than required by their unique loads. Rationalising the building’s frame has reduced the use of steel by 25%, saving approximately 5,000 tonnes of CO2.
Designed for client Mitsubishi Estate London and being delivered by Stanhope, the scheme is conceived as a series of stacked blocks in response to its urban context, with consideration of view corridors and an adjacent conservation area. The top three storeys are arranged as a pavilion incorporating the viewing/event space as well as plant rooms. The adoption of a raft foundation for low and mid-rise elements saved a further 3000 m3 of concrete, equating to 300 tonnes of CO2. A double skin façade mediates between maximum daylighting, occupier-controlled shading and passive stack ventilation.