This document describes a method for determining the flow capacity under constant in-plane hydraulic head of geotextiles and related products. This document is an index test that applies only to factory-made products. For perforation testing
NF G38-142-1:2020 history
2020NF G38-142-1:2020 Geotextiles and geotextile-related products - Determination of water flow capacity in their plane - Part 1 : index test
2010NF G38-142:2010 Geotextiles and geotextile-related products - Determination of water flow capacity in their plane.