Presents a method for determining tensile properties of geotextiles and related products using a wide width strip. Applicable to most geotextiles including woven, nonwoven, layered and knitted fabrics and felts. Applicable to geogrids but test specimen dimensions may need altering to ensure at least five complete tensile elements and one row of nodes or cross members. Includes measurement of load and elongation characteristics and procedures for calculation of offset strain, offset modulus, secant modulus, maximum load, breaking load, elastic limit, strain at maximum load and strain at breaking load. Methods for measuring tensile properties of conditioned and wet test specimens are included.