ASTM-D4751 › Historical Revision Information
Standard Test Methods for Determining Apparent Opening Size of a Geotextile
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1.1 This test method is used to determine the apparent opening size (AOS) of a geotextile by sieving glass beads through a geotextile.
1.2 This test method shows the values in both SI units and inch-pound units. "SI" units is the technically correct name for the system of metric units known as the International System of Units. "Inch-pound" units is the technically correct name for the customary units used in the United States. The values in inch-pound units are provided for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
apparent opening size; geotextile; glass beads; sieve; ICS Number Code 59.080.70 (Geotextiles)
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Sept. 15, 1993