The iconic Elizabeth Tower is the most easily recognisable part of the Palace of Westminster. Purcell has been appointed by Strategic Estates as architects for the essential conservation repairs and refurbishment to the external fabric and internal spaces of the Elizabeth Tower. The proposed work includes repairing the cast iron roof, clock faces and other high level metalwork, water proofing the belfry tower, external stonework conservation, installing a lift and upgrading the building’s services.
The last major repair works to the tower which required scaffolding were carried out in the early 1980s. Several aspects of the tower’s original design require the tower to be scaffolded approximately every 25 years, including redecoration of the cast iron roofs, maintenance of the clock and stone repairs.
This is the first time a project will have been delivered by the Strategic Estates using Building Information Modelling (BIM). Working with multiple stakeholders, BIM is being used to digitally model the site in detail and demonstrate the scaffolding volumes around the tower during the works. Co-ordination of the construction adjacent to the main pedestrian thoroughfare through the Palace from Portcullis House and the main vehicle entrance without disrupting the business of parliament are key challenges.
The biggest challenge for the project is logistics and access. The iconic tower has just one single narrow access staircase accessed from a busy circulation route.
A new lift will be created within the vent shaft, giving access to all floors, including a discrete glass stair and lift enclosure at belfry level and a staff toilet. The design enables new services to be integrated into the vent shaft allowing insensitive adaptions to the tower’s fabric to be removed and restored.