Multi-discipline ground engineering contract off the M1 in Leeds.
Belper-based Bowmer & Kirkland and Muse Developments were awarded the contract to construct a 112,000m2 state-of-the-art distribution hub for Premier Farnell. Aarsleff offered Bowmer’s the option of a value engineered solution on several aspects of the substructure. It redesigned a large gabion wall into a slim 7.5m high soil nail retained slope – that involved the installation of 1,151 No. Soil Nails at between 6m and 13m in length. This removed 4.5m of excavation and saved six weeks on the overall construction programme.
Aarsleff also offered a radically different approach to the original option on the actual foundations, which also saved the main contractor time. Due to the ground conditions comprising an overburden of fill overlying mudstones, Aarsleff proposed a driven piled solution as opposed to standard CFA piling and installed 1,199 No. 300mm square diameter precast piles to depths of between 6m and 14m and 210 No. 244mm diameter steel tubular piles down to between 8m and 18m in depth, using a combination of two rigs – a Junttan PMx22 and a Junttan PM20.
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