The Landmark

22 Marsh Wall, also known as The Landmark, is an award winning development in the south-western edge of the Canary Wharf estate, close to the River Thames. Designed by Squire & Partners, the tallest building is 140m tall and 44 storeys. Upon completion the building was the tallest apartment building in the United Kingdom and also one of the tallest buildings in London.

801 apartments, offices, commercial & retail space are arranged in 4 buildings over a double level basement car-park, with two ‘low rise’ buildings at 9 storeys, complementing the 33 storey and 44 storey towers.

Manhire Associates worked closely with the design team to develop proposals for the buildings. The tower cores are slender and accelerations under wind loads governed the core design and outrigger walls were designed to mobilize stiffness of the external columns. The outrigger walls were located sympathetically at party wall locations. The buildings are clad in curtain wall and edge slab deflections were a key criterion in the design. While the medium rise buildings are of conventional reinforced concrete flat slab construction with thin slabs and ‘blade columns’, the tower slabs are post-tensioned to minimize foundation loads and to also improve the performance of the tower core under wind loading. Wind tunnel modelling enabled the stability system to be refined with cross-walls and link beams combining with an off-set core to limit accelerations and velocities under wind loading to within acceptable levels of comfort.

The towers were founded on piled raft foundations with CFA piles ‘socketed’ into the Thanet Sands. Settlement studies were undertaken which indicated that the low rise buildings could be founded on pad foundations and significant economies were realized by adopting CFA piles for the towers and pad foundations for the low rise buildings.

In 2007, the development received recognition as the Best High Rise Development and Best High Rise Architecture in the Daily Mail UK Property Awards. The development was completed in 2010.

ClientChalegrove
Architect:Squire & Partners
ContractorJRL, Yuanda
Sectors
  • Urban Regeneration
  • Residential
Challenges
  • Brownfield
  • Building next to Water
  • Deep Basements
  • Facades
  • Geo-Environmental
  • Ground Movements
  • Tall Buildings
  • Temporary Works
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