Location of 240 Blackfriars Road close to major rail lines meant Miller Piling needed a quiet, vibration free solution to build the foundations for the new 30 storey mixed use development at the site.
Miller carried out the £1.2M foundations contract for main contractor Mace, which is overseeing the £70M project for Great Ropemaker Properties, a joint venture between Great Portland Estates and Ropemaker Properties.
With the site adjacent to a Victorian brick viaduct that carries rail lines onto Blackfriars Bridge and poor ground conditions, the foundation solution was not straightforward.
Miller used a crane-suspended Piletec RF 18 vibrating hammer to quietly install casings to 12m through the loose variable ground to enable the piles to be formed in the underlying clay. With the casing in place, Miller installed 280 secant piles to form the basement box and a further 168 750mm diameter bearing piles to 20 to 42m below ground level along the line of the viaduct.
With work on the foundation completed on time, work is now underway on building the concrete frame for the mixed office, retail and residential development.