Application
The Geotextile Opening Size Tester (Dry Sieving) is used to determine the apparent opening size (AOS) of geotextiles by sieving glass beads through a geotextile sample. The geotextile specimen is placed in a sieve frame, and sized glass beads are applied to the surface. The test setup shakes laterally, inducing a jarring motion to pass the beads through the geotextile. The procedure is repeated using various bead sizes until the apparent opening size of the geotextile is determined.





