The scheme involved the retention and refurbishment of the existing façade on the 13-storey tower, which stands across the Thames from the Houses of Parliament (see NSC May 2014).
ISG added a new steel-framed glazed cladding system, creating a double-skinned façade along the building’s western side and two new steel-framed atria along the east, housing new bed lifts and an art installation.
Prior to installing the lift shaft, Bourne Steel erected the floor steelwork for the two atria. This was formed with a series of 600mm × 400mm jumbo box sections that were installed at second floor level above a triple-height basement.
Supporting the floors are CHS columns, and one feature Y-shaped column at the front that also supports the atria glazing.