Aquaforce Jetting recently carried out concrete removal for the redevelopment of 4 North, St Andrew Square in Edinburgh.
In October 2017, ISG began the extensive refurbishment of the building in Edinburgh City Centre. The £8 million redevelopment of the eight storey building included the creation of an extra floor, a new lift core, open plan floor plates and additional car parking facilities.
Structural refurbishment specialist Freyssinet won the contract to create penetrations through un-bonded post-tensioned concrete slabs in the centre of the building to enable the construction of a new lift core.
Freyssinet enlisted Aquaforce to remove the concrete. Using hand lance and robotic water jetting techniques, the hydrodem team set about removing concrete, and significantly not the reinforcement or the tendons, which remained safely in place. Penetrations of approximately 10m x 3.5m were created through the existing eight post-tensioned floor slabs, which would facilitate the construction of the new lift shaft through the centre of the building.
Read the case study here.