DFI Journal - The Journal of the Deep Foundations Institute

Volume 10, Issue 2, January 2016

Papers are only available to members. If you are a member, please click on the "Login" link at the top of the site. You may use your DFI login.

If you are not a member, click here join.

Please click here to complete purchase by clicking on the PDF $25 icon and completing the payment form. The paper will be emailed to you within 48 hours.

A comparison of design practice of bored piles/drilled shafts between Europe and North America

D. Brown, T. Wulleman and M. Bottiau


This paper assesses the comparative practices between Europe and North America with respect to the design of bored pile/drilled shaft foundations. Several major trends are identified that are common to both regions: (1) increasing complexity in the project demands and applications, and (2) more stringent testing and quality assurance requirements. The design codes differ in some respects but the most striking similarity between the European Union (EU) and the United States is the tendency for local (or national in the case of the EU) variations to persist in the implementation of design practices. Some of the variations reflect geologic differences, but much of the inconsistencies in design practice appear to be artefacts of the evolution of local practice that are not easily relinquished. Other common issues identified in the study include the wide local variations in constructability concerns with respect to concrete mix characteristics, reinforcement details and the influence of construction techniques on foundation performance.