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New time-saving methodology for 5,000t load application

ALE performs first 5,000t load application using time-saving methodology in London city centre

ALE has used its in-house expertise to design, supply, install and perform a bespoke onsite load application, the first load test of its kind in Europe when conducting the progressive loading of a test pile in central London, UK. At 5121t, it was also the highest load test on a pile within Europe.

ALE’s testing equipment enabled the ground model to be confirmed on site for the future main build structure of the new 21 Moorfields building, a mixed retail and office redevelopment. The client supplied the load schedule of the 16-storey buildings test pile up to a maximum load of 50Mn (circa 5,000t).

Specialist weighing equipment needed to be positioned prior to the commencement of test truss assembly. The pile test loading and unloading cycle fluctuated in load up to a maximum of 52.2Mn in line with the engineer’s requirements. The test then took place over a three-day period, running 24 hours a day.

Pete Cox, Project Engineer, explained:

“Using this method meant that our client had the insight that our solution was able to distribute the load across a varying number of reactive piles during the load application sequences. Not only does the client now have the confidence that this monitoring and control solution can now be implemented for their load schedule for the pile test criteria, but there is the potential to apply this high load test time-saving methodology on other sites.”

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