This International Standard 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.
ISO 12956:2010 Referenced Document
ISO 10320 Geosynthetics — Identification on site*, 2019-02-28 Update
ISO 2591-1 Test sieving; part 1: methods using test sieves of woven wire cloth and perforated metal plate
ISO 565 Test sieves; metal wire cloth, perforated metal plate and electroformed sheet; nominal sizes of openings
ISO 9862 Geosynthetics — Sampling and preparation of test specimens*, 2023-10-01 Update
ISO 12956:2010 history
2019ISO 12956:2019 Geotextiles and geotextile-related products — Determination of the characteristic opening size
2010ISO 12956:2010 Geotextiles and geotextile-related products - Determination of the characteristic opening size
1999ISO 12956:1999 Geotextiles and geotextile-related products - Determination of the characteristic opening size