22 Bishopsgate: Combining Well-Being with a Connected, Sustainable Structural Solution

Kamran Moazami
Head of Discipline, Building Structures
WSP, London

Nick Offer
WSP, London

Two key themes illuminate 22 Bishopsgate, the City of London’s tallest building and the UK’s first WELL-enabled tower. 22 Bishopsgate raises well-being with generous floor-ceiling heights, faster lifts, and public realm advances, while an MEP strategy gives increased fresh air, optimized daylight / solar energy balance, and a focus on mind, body, and spirit. A CFD review boosts pedestrian comfort and safety, and mitigation solutions reduce high-velocity areas. To overcome the 62-story tower’s structural challenges, engineers reused the raft/pile foundation, three-story basement, and lower core of a previous project; achieved full connectivity within the urban realm; and improved build speed, usable space, and cost. Placing a new structure on an existing foundation required numerous transfer systems without reducing usable space. All existing piles were used, while new piles and raft were stitched into the old foundation; a temporary transfer system allowed construction of the core above to continue in tandem with piling inside the restricted basement. Temporary works were minimized using construction staging analysis. In short, sustainable MEP/structural strategies have enabled a building’s urban connectivity and enhanced the well-being of the users inside.

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