Updated NorGeoSpec Guideline

 
 

We are happy to announce that the updated

NorGeoSpec Guideline, Rev. 2, Issue: 01.09.2025 

is available now. 

The updated NGS guideline has been published on the NorGeoSpec website on 01.09.2025 and replaces the NorGeoSpec 2012, Rev. 01, Issue: 14.12.2016 with immediate effect.

 

Please feel free to communicate this great news within your organisation and any other interested party you are in touch with! You may refer to the following general information on NorGeoSpec and more specific on the key changes in the updated NorGeoSpec:

NorGeoSpec - A Nordic system for the certification and specification of geosynthetics and geosynthetic-related products 

Introduction

NorGeoSpec defines a system for the certification, specification and control testing of geosynthetics and geosynthetic-related products and defines requirements related to the intended purpose (function) of the products. NorGeoSpec is implemented as a complete system as a revision and extension of the NorGeoSpec 2002 and NorGeoSpec 2012.

The Nordic system NorGeoSpec (NGS) has been developed by users from several countries (Norway, Sweden, Finland and Estonia) to help the users of geosynthetics, especially in Europe, in their specific projects, to fulfil local regulations and guidelines. All users (owners, specifiers, manufacturers) are part of the definition and the development of the NorGeoSpec.

The NorGeoSpec System includes two parts:

• Part 1 - Product Certification (PC), page 3-36, presents current product requirements for three different functions and frequent uses of geosynthetics for specific projects. A corresponding evaluation of the geosynthetics quality regarding fitness for purpose for these functions is stated by a certificate on Product Certification
• Part 2 - Product Specification (PS), page 37-50, covers some special areas of application, current cases of use, requirements and levels of performance which may be requested for such specific projects. A corresponding evaluation of the geosynthetic regarding fitness in use for such purposes is stated by a certificate on Product Specification

Key changes of the new NorGeoSpec guideline, Rev. 02, Issue: 01.09.2025 in a nutshell:

• new specification profiles defined for "filtration in drainage systems"; see NorGeoSpec, Part 2, Product Specifications, section 2.2, page 38 ff.
• new evaluation of the suitability of a product for an installation under Nordic conditions at negative temperature (down to -10°C). The evaluation is based on the results of the ROUGH project and subsequent Guidelines for the Use of Geosynthetics in Nordic conditions (ROUGH).
• new certification decision process; see Figure 2, page 23
• updated normative and other references
• organisational and structural changes have been made to account for the latest specification and certification requirements

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