As part of the regeneration of the Peabody Estate in Clapham, Murphy was employed to design and construct the piled foundations of the first phase of the redevelopment which comprised of three new accommodation blocks.
A Soilmec SF.50 and two Soilmec R312 rotary bored piling rigs were allocated to this project which started with Plots 4 and 5.
A total of 871 450mm and 600mm diameter piles were on the three blocks (inclusive of crane base and contiguous wall piles), ranging from 12-32m.
There were 97 contiguous wall piles on plot 5 which were a mixture of 450mm diameter piles at 600mm c/c and 600mm diameter piles at 750mm c/c. There were also 108 450mm diameter general load bearing piles on these plots, 27 of which were cast to 4.5m below ground level.
On Plot 1, the largest of the three plots, we constructed 364 contiguous wall piles, which again were a mixture of 450mm diameter piles at 600mm c/c and 600mm diameter piles at 750mm c/c. Given the larger size of the reinforcement cages required in these piles we decided to have these prefabricated and delivered to site. Plot 1 also needed the construction of 302 450mm diameter load bearing piles which all had to be cast 7m below piling platform level.
The project was completed ahead of schedule and under budget.
A key challenge was the proximity of the site to Clapham Junction railway station. Plots 4 and 5
were adjacent to the London over ground train lines which meant all works had to have a category 2 and 3 design check. The piling rigs had to work perpendicular to the tracks when they came within the fall radius of the railway line, and also had to be supervised by a Network Rail supervisor.
The Ground Engineering team at Murphy offers in-house pile design, value engineering and bespoke technical solutions throughout the UK and Ireland. We have a proven track record of successfully delivering both minor and major works across a range of sectors.