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ASTM D4533 2011 Edition, June 1, 2011
Complete Document
Superseded By: ASTM D4533/D4533M
Standard Test Method for Trapezoid Tearing Strength of Geotextiles
Includes all amendments and changes through Change/Amendment , June 1, 2011
Additional Comments: W/D S/S BY ASTM D4533/D4533M
Page Count:5
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This test method is an index test used to measure the force required to continue or propagate a tear in woven or non-woven geotextiles by the trapezoid method. While useful for quality control and acceptance testing, the trapezoid tear test does not provide all the information needed for all design applications and other test methods should be used.

This test method is applicable to most geotextiles that include woven fabrics, nonwoven fabrics, layered fabrics, knit fabrics, and felts that are used for geotextile applications.

The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard. 

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.