69 contributor to the City ’ s Eastern Cluster . Featuring a host of sustainability credentials , 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 designed to be no bigger than required by their unique loads . Rationalising the building ’ s frame has reduced the use of steel by 25 % less steel , saving approximately 5,000 tonnes of CO 2 .
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 tonnnes of CO 2 . A double skin façade mediates between maximum daylighting , occupier controlled shading and passive stack ventilation . The scheme is due to complete at the end of 2022 .