This document specifies two test methods for determining the water permeability characteristics of a single layer of geotextile or geotextile-related product normal to the plane: a) the constant head method; and b) the falling head method.
Tämän julkaisun valmistelusta Suomessa vastaa SFS Suomen Standardit, puh. 09 149 9331.
Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Test specimens
4.1 Handling
4.2 Selection
4.3 Number and dimensions
4.4 Specimen conditions
5 Constant head method
5.1 Principle
5.2 Apparatus
5.3 Procedure
5.4 Calculation and expression of results
6 Falling head method
6.1 Principle
6.2 Apparatus
6.3 Procedure
6.4 Calculation and expression of results
7 Test report
Annex A Determination of the correction factor, RT, to a water temperature of 20 °C (informative)
Annex B Relationship between head loss and flow velocity (normative)
Annex C Individual velocity index values for a head loss of 50 mm (informative)
Annex D Experimental data and calculations (informative)
ISO 10320:2019 Geosynthetics -- Identification on site
ISO 2854:1976 Statistical interpretation of data -- Techniques of estimation and tests relating to means and variances
ISO 5813:1983 Water quality -- Determination of dissolved oxygen -- Iodometric method
ISO 10320:2019 Geosynthetics -- Identification on site
ISO 2854:1976 Statistical interpretation of data -- Techniques of estimation and tests relating to means and variances
ISO 5813:1983 Water quality -- Determination of dissolved oxygen -- Iodometric method
ISO 9862:2005 Geosynthetics -- Sampling and preparation of test specimens