This Standard sets out a method for determining the tearing strength of geotextiles under in-plane loading, using the trapezoidal method.*

NOTE: The trapezoidal method is a tearing force tension test in which the strength is determined primarily by the individual fibres of the fabric structure, and their bonding or interlocking where applicable.

* This method is based on ASTM D4533, Test method for trapezoidal tearing strength of geotextiles.