Geotextiles and geotextile-related products. Determination of the characteristic opening size

BS EN ISO 12956:2010 Geotextiles and geotextile-related products. Determination of the characteristic opening size

BS EN ISO 12956 is an International Standard which specifies a method for the determination of the characteristic size of the openings of a single layer of a geotextile or geotextile-related product using the wet-sieving principle.

Contents of BS EN ISO 12956:

Foreword

1 Scope

2 Normative references

3 Symbols

4 Principle

5 Apparatus and materials

6 Test specimens

6.1 Handling

6.2 Selection

6.3 Number and dimensions

6.4 Specimen condition

7 Procedure

8 Calculation and expression of results

9 Test report

Annex A (normative) Mesh sizes

Annex B (informative) Example of the determination of the characteristic opening size