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Ground nuts


I am concerned that the article 'Friends of the Earth' (NCE 9 May) as, while talking about a 'revolution' in geotechnics, it referred to partnering and price - general issues affecting the civils and construction industry as a whole, not specifically geotechnical developments.

There was no mention of the important area of soil reinforcement or the use of geosynthetics. Over the past 20 years these techniques and materials have been widely accepted as providing a viable and cost effective alternative in a wide range of project applications.

Soil reinforcement and ground stabilisation using geogrids have recently demonstrated its sustainable value with re-use of materials on site, easier planning restrictions and less land take.

Also, with the aggregate tax levy in force, the cost savings on imported fill using geogrids can be substantial.

I feel that the article would have given a more balanced overview of the developments in this sector, if it had at least touched upon some of these less traditional approaches.

John H Dixon (M), Tensar International,

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