By Stephen P Corbet, Aecom, (Chairman BSi B526/4 Reinforced and Strengthened Soils), Chris Jenner, Tensar International UK, Graham Horgan, Huesker UK. Presented at the Ground Engineering Slopes Conference on 16 November 2010. This paper was first published in GE’s April 2011 issue.
Since the publication of BS8006 in 1995 after 10 years of drafting in committee, the design of reinforced soil structures has evolved as the results from research have improved the understanding of the behaviour reinforcement in soil.
The publication of the Eurocodes for design has resulted in the need to withdraw or revise all existing design codes in the UK and Europe. The Eurocode EN1997-1 Geotechnical Design does not include any provision for the design of reinforced soil structures and the UK NAD makes a clear statement to this effect.
In particular, the factors to be applied to the strength of the reinforcing elements cannot be determined from the Eurocode.