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Piling
Piling project throwback!

Project throwback to 2015 when Aarsleff piled 207 No. precast concrete piles for a multi-storey car park facility in the Capital Quarter, Cardiff City Centre. The installation had to meet with Network Rail to ensure a safe system of work to protect their adjacent line. A further 14 tubular steel piles sized 339mm diameter were driven up to 15 metres for a maximum 900kN pile load. The drive went well and the crew were meticulous in positioning the rig.

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Capital Quarter is an exciting 8-acre mixed-use Cardiff City Centre development comprising offices, hotels, student housing, residential and education uses. The Capital Quarter development was undertaken by JR Smart (Builders) Ltd, a local family business with 40 years of experience of the development process, working closely with a wide range of organisations in both the public and private sectors.

All four structures in the development have been piled by Aarsleff, who had worked with JR Smart on many regional developments over the past 18 years.

The car park construction was on a former industrial estate and required 207 precast concrete and 14 tubular steel piles to be placed up to 15 metres deep.

“We had previously piled the three adjacent structures and have established a good working relationship with the JR Smart team. It is a sensible two-way communications relationship which works well for both parties aiming to move the projects along at best possible speed”

“For this operation, we worked out a strategy to limit noise and vibration as construction was still underway on one of the new buildings. We also had to meet with Network Rail to ensure a safe system of work to protect their adjacent line. From our surveys and site knowledge, we predicted a challenging drive scenario for the piling as there is a two-metre deep band of hard sand and gravel running across the site and we needed the full power of the Junttan PM20 piling rig.”

Gareth Smart, development director, JR Smart, is in charge of the development process at Capital Quarter, and said: “We have worked with Aarsleff on many developments and as expected this project ran true to schedule. We had cleared the site a couple of years ago and were able to provide a good stable and level base for the rig to operate on. Fortunately we have plenty of easy access for the pile delivery and holding. The drive went well and the crew were meticulous in positioning the rig. We expect to be working with Aarsleff again soon. We have applied for planning permission for a 23-storey block of apartments so we can foresee five more years’ development on this site.”

For the Capital Quarter structure in 2015, 207 concrete piles sized 300 x 300mm were driven home between 10m and 12 metres in depth for a 600 – 900kN pile load. A further 14 tubular steel piles sized 339mm diameter were driven up to 15 metres for a maximum 900kN pile load.

 

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