ASTM D 4632 - 08 Standard Test Method for Grab Breaking Load and Elongation of Geotextiles

American Society for Testing and Materials (ASTM). Current edition approved July 1, 2008. Published May 1991. Originally approved in 1991. Last previous edition approved in 2003 as D4632 – 91(2003). 4 p. This test method is an index test which provides a procedure for determining the breaking load (grab strength) and elongation (grab elongation) of geotextiles using the grab method. This test method is not suitable for knitted fabrics and alternate test methods should be used. While useful for quality control and acceptance testing for a specific fabric structure, the results can only be used comparatively between fabrics with very similar structures, because each different fabric structure performs in a unique and characteristic manner in this test. The grab test methods does not provide all the information needed for all design applications and other test methods should be used.