The development will provide a total of 217 residential units in five separate buildings, ranging from six to 24 storeys.
The construction schedule for NEO Bankside presented some very tight deadlines. Completed in three phases, the two pavilions closest to the river progressed first, followed by blocks C and D and finally building E on Southwark Street. The landscaping works have continued in parallel through all phases.
A concrete frame, poured in situ, provides the main support for the building. Perimeter bracing serves to provide lateral stability under wind load reducing the requirement for sheer walls and thus allowing greater flexibility of internal planning and servicing arrangements. The bracing is joined at every third floor by pinned nodes transferring the lateral forces applied to the structural frame by wind loads onto the cladding and into the bracing system.
The cladding units are double-glazed units, with European oak replacing the interior layer of glazing in the solid panels. The unitised system is prefabricated off-site and each section is installed from the inside of the building, and hung from the slab above. As there is no scaffolding required, both the speed and safety of the installation is increased.
Different stages of the construction can take place concurrently, with the structure and cladding progressing at a rate of approximately one floor per week. At certain points, the building's structure was being cast at the top of the block; cladding installed four floors below and fit out taking place on the lower levels.
The perimeter steel structure of the wintergardens is prefabricated off site and propped while the slab above is cast. The steel is pinned to the main structure creating a thermal break. Because the wintergarden is hung from the node above, the hangar can be lighter – more slender – than if it were propped. Once the slab is cast and the hanger connected to the bracing frame, the props are taken out from the top down, incrementally increasing the load on the node from which they are hung.
The lift cores are a separate steel structure to the main concrete floorplates, connected to each of the floor slabs at each lobby structure. The steel structure is prefabricated before being brought to site for assembly and glazed in situ from a tower crane. This area is envisaged as a 'coat on' space, and is therefore only single glazed to make the lift cores more transparent and emphasise the structure and clarity of views.
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