Andrew J Bond, director, Geocentrix and Brian Simpson, director, Arup Geotechnics. This paper was first published in GE’s December 2009 issue.
This two-part paper presents a summary of the provisions for pile design according to Eurocode 7 and the UK National Annex.
The design process for piling depends on both calculation and testing of piles, by either static loading or dynamic methods. Although Eurocode 7 recognises the importance of combining these, its provisions treat them separately. Furthermore, pile design has usually linked, at least implicitly, consideration of ultimate and serviceability limit states; this remains the case in Eurocode 7. In the event, specifying how calculation and testing should be used together proved to be a major challenge in drafting the UK National Annex. An extensive consultation among pile designers was undertaken to reach the consensus, which was published in November 2007.