Piling and ground engineering specialist Cementation Foundations Skanska’s expertise in large diametre piling and coring through thick concrete has helped win two contracts at London Docklands worth a total of £1.3 million.
At New Providence Wharf, it has a £800,000 contract to construct continuous flight auger piles up to 29 metres deep on a brownfield site for Ballymore Properties Limited. This includes using powerful rotary hydraulic rigs specially fitted by company engineers to core through a concrete base slab three metres thick, instead of breaking up the concrete.
Nearly 300 piles will be constructed during the 14-week programme, with the site being developed for social housing.
At nearby Canary Wharf, the company will construct large diametre foundations for a 30-metre bridge being built by McNicholas connecting south wharf to the north. The £500,000 contract includes 11 rotary bored marine piles with permanent liners to stop material leaking into the water.
The company is using a state-of-the-art resonance free vibrator to reduce vibration caused when installing the liners to avoid disruption to nearby Billingsgate Fish Market. Sonic logging will also be used to test each pile’s integrity during the six-week programme.