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Partnering brings benefits on M60 link

STENT HAS just finished major piling work on the final link of the Manchester outer ring road, the M60 Medlock to Irk motorway.

Work included installing some 3,600 precast piles for a 1km raft, piled foundations for seven bridges and contiguous piled retaining walls at eight other locations.

The link is being designed and built by the Major Projects Division of parent company Balfour Beatty. The project is being carried out under a partnering agreement which allowed Stent to co-ordinate directly with designer Gifford & Partners to value engineer the foundations.

An example of this is the precast piled raft. Original design called for 350mm square, 14m long piles but after using an observational approach these were replaced by 270mm and 235mm square piles an average of 15m long.

Stent also installed 1,200mm diameter, 20m long CFA piles for an overbridge being built top down, that would have normally used rotary piles formed under bentonite. Heavier reinforcement and testing confirmed they would be suitable.

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