A major redevelopment of the Hammerson House care home on The Bishops Avenue, London. The proposed scheme is within a conservation area and includes the demolition of the existing care home on the site and construction of a new four-storey building.
The care home will provide 112 resident bedrooms across the four floors, along with shared communal areas, care and therapy services, staff facilities and external landscaped gardens. Feature stonework and glazing around the entrance area, dining and conservatory spaces will provide visually interesting façades.
The proposed building will be three storeys with a single-storey basement level beneath the full footprint of the superstructure to suit the sloped topology of the site. Due to ground conditions, the single-storey basement will use a secant piled wall around its perimeter with bearing piles beneath column positions and a suspended basement slab spanning between them.
The superstructure is designed as a concrete frame stabilised with reinforced concrete shear walls around the stairwells, and reinforced concrete flat slabs supported by a regular column grid. At ground floor level there will be a large column-free communal space, providing flexibility and an area to host events, using a pair of downstand concrete transfer beams to support the columns above.
Due to the ground conditions and a high-water table, the uplift on the basement is a significant challenge. Piled foundations will be the most suitable foundation system based upon the vertical loads and necessity for tension piles to counteract the uplift from the hydrostatic pressure of the ground water.
Currently on site.