This European standard specifies a method for determining the constant-head water flow capacity within the plane of a geotextile or geotextile-related product. Note: If the full water flow capacity characteristics of the geotextile or geotextile-related product have previously been established, then for control purposes it can be sufficient to determine the water flow capacity at two loads and both gradients.
DS/EN ISO 12958:2010 history
2020DS/EN ISO 12958-2:2020 Geotextiles and geotextile-related products – Determination of water flow capacity in their plane – Part 2: Performance test (ISO 12958-2:2020)
2010DS/EN ISO 12958:2010 Geotextiles and geotextile-related products - Determination of water flow capacity in their plane