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BMW is building a new 'multifunctional event and delivery centre' next to its famous 'Four Cylinder' headquarters in Munich, Germany. Due to open in 2006, BMW-Welt's futuristic design has a double cone at its southern end and a gigantic curved roof floating above the main structure.

German contractor Bauer Spezialtiefbau last month finished an eightmonth contract to construct the 15,500m 2excavation pit for the new building. The 210m long excavation is between 120m and 40m wide and 14m deep. Bauer installed a perimeter wall of 775, 800mm diameter bored piles, tied back by 13km of ground anchors. The firm also installed 6km of CFA piles to protect against hydraulic uplift and 1,200m 2of soldier pile retaining wall.

Bauer was also responsible for bulk excavation, groundwater control and placement of the blinding layer, with some of the work subcontracted to partner companies. It has carried out a number of projects for BMW, including construction of deep excavations for the its crash testing centre in Munich and the acoustics centre in Aschheim.

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